Faculty Profiles - Kazuaki Otsuki

写真a

Kazuaki Otsuki

Organization

Graduate Faculty of Interdisciplinary Research Faculty of Engineering Civil Engineering Environmental Engineering (Civil and Environmental Engineering) Associate Professor

Research History

山梨大学大学院総合研究部工学域土木環境工学系准教授

2023.8
University of Yamanashi Assistant Professor

2020.4 - 2023.7

　 More details

Country：Japan

Job classification：Assistant professor
国立研究開発法人土木研究所自然共生研究センター専門研究員

2016.4 - 2020.3
Tokyo University of Science Faculty of Science and Technology, Civil Engineering Assistant Professor

2011.6 - 2016.3
日本学術振興会特別研究員（DC2-PD）

2010.4 - 2011.6

Education

Kyushu University

2008.4 - 2011.3

　 More details

Country： Japan

Course： Doctor later
Kyushu University 大学院工学府都市環境システム工学専攻

2008.4 - 2011.3
Kyushu University

2006.4 - 2008.3

　 More details

Country： Japan

Course： Master course
Kyushu University 大学院工学府都市環境システム工学専攻

2006.4 - 2008.3
Kyushu University

2002.4 - 2006.3

　 More details

Country： Japan
Kyushu University 工学部地球環境工学科

2002.4 - 2006.3

▼display all

Degree

博士（工学） ( 2011.3 九州大学 )
修士（工学） ( 2008.3 九州大学 )
学士（工学） ( 2006.3 九州大学 )

Research Areas

Life Science / Ecology and environment
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Environmental systems for civil engineering
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Hydroengineering
Life Science / Ecology and environment / Ecology/Environment
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Hydroengineering
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Environmental systems for civil engineering / Civil and environmental engineering

▼display all

Research Interests

多自然川づくり
BIM/CIM
伝統的治水システム
グリーンインフラ
流域治水
グリーンインフラ
BIM/CIM
伝統的治水システム
流域治水
多自然川づくり

Research Projects

気候変動適応と緩和に貢献するNbS－湖沼流域スケールでの研究－ Major achievement

Grant number：2-2302 2023.4 - 2026.3

環境省環境研究総合推進費

西廣淳、厳島怜，橋本雅和
多様な扇状地河川を有する富士川流域における治水と環境を両立する流域治水策の検討に向けた研究 Major achievement

2023.4 - 2024.3

国土交通省河川砂防技術研究開発公募地域課題分野（河川生態）

　 More details

Authorship：Principal investigator Grant type：Competitive
DNA情報に基づく水生昆虫の流域内多様性評価手法の構築と流域管理への応用

2022.4 - 2024.3

基盤研究(C)

　 More details

Authorship：Coinvestigator(s) Type of fund：：Science research expense
DNA情報に基づく水生昆虫の流域内多様性評価手法の構築と流域管理への応用

2022.4 - 2024.3

基盤研究(C)

　 More details

Grant type：Competitive
河口域の水温特性と気温変動による影響の河川間の違いに関する研究

2020.7 - 2021.3

　 More details

Authorship：Principal investigator Type of fund：：Funded research

気候変動による水温上昇が河川河口域の水温環境やそこに生息する通し回遊生物への影響を検討すること，これらの検討を通じ，水温上昇によって影響を受けやすい河川の特徴を抽出する．
・河口域の地形特徴が水温上昇緩衝帯の形成に与える影響の検討
・温暖化に伴う河川域と河口域の水温上昇が通し回遊生物の生存リスクに与える影響の検討
河口域の水温特性と気温変動による影響の河川間の違いに関する研究

2020.7 - 2021.3

　 More details

Grant type：Competitive

気候変動による水温上昇が河川河口域の水温環境やそこに生息する通し回遊生物への影響を検討すること，これらの検討を通じ，水温上昇によって影響を受けやすい河川の特徴を抽出する．
・河口域の地形特徴が水温上昇緩衝帯の形成に与える影響の検討
・温暖化に伴う河川域と河口域の水温上昇が通し回遊生物の生存リスクに与える影響の検討
気候変動に対応した持続的な流域生態系管理に関する研究（サブテーマ3　河川・流域管理による治水へのコベネフィット評価）

2020.4 - 2023.3

西廣淳、中村圭吾，村岡敬子，田和康太
気候変動に対応した持続的な流域生態系管理に関する研究（サブテーマ3 河川・流域管理による治水へのコベネフィット評価）

2020.4 - 2023.3

西廣淳, 中村圭吾, 村岡敬子, 田和康太

　 More details

Grant type：Competitive
気候変動によって増加が見込まれる河川維持掘削行為のコスト縮減と河川環境維持保全に向けた研究

2020.4 - 2022.3

（公財）河川財団河川基金助成事業研究者・研究期間部門

　 More details

Authorship：Principal investigator Type of fund：：Others
気候変動によって増加が見込まれる河川維持掘削行為のコスト縮減と河川環境維持保全に向けた研究

2020.4 - 2022.3

（公財）河川財団河川基金助成事業研究者・研究期間部門

　 More details

Grant type：Competitive
Resilient reinforcement technology and management of river levee as climate change adaptation

Grant number：16H02365 2016.4 - 2020.3

Japan Society for the Promotion of Science Tokyo University of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Nihei Yasuo

　 More details

This study aimed to develop a laminar drain reinforcement (LDR) levee, which combines the advantages of drain layers and GRS technology, as a reinforcement technology of river levee that maintains the levee function even for excessive floods for a long time and has excellent earthquake resistance. We conducted laboratory tests for overflow and infiltration resistance of river levees with various reinforcement conditions such as earthen levee, crest pavement, concrete panels, drainage method, LDR levees. Earthquake-flood combined disaster experiments were also conducted for the river levees. The results suggest that the LDR levee has high resistance against overflow and infiltration, and compound disasters due to earthquake and flood. In addition, we carried out field survey on levee damage due to heavy rains and showed that the dimensionless cross-sectional area, which is a river flow capability index, is useful as an index for selecting important reinforcement points for river levee
Study on the relationships between natural disturbance and ecological succession on tidal flat

Grant number：15H02456 2015.4 - 2019.3

Japan Society for the Promotion of Science Kyushu University Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Onikura Norio

　 More details

The field surveys on macro-benthos such as gobies, crabs, bivalves and univalve shells were conducted at tidal flats around estuaries of the Kuma and Mimi rivers and the Tsuyazaki Bay. The community structure in the three areas were distinctly different, and seasonal changes were also confirmed. The long-term surveys conducted in the Kuma River indicated that ecosystems on tidal flat have ecological succession starting from disturbances. In particular, most of benthic species have suitable size for sediment, resulting that the change of sediment condition affects community structure of macro-benthos. We confirmed that two major disturbances occurred in the estuary of the Kuma River during our survey period, and the disturbances helped to expand the distribution of two pioneer species such as the jackknife clam. In the Mimi River, we constructed a habitat model of several benthic species and carried out simulation analysis of the suitable habitat for virtual flood.
Development of an automatic and continuous monitoring system for debris wood in rivers with thermography

Grant number：15K14043 2015.4 - 2017.3

Japan Society for the Promotion of Science Tokyo University of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

Nihei Yasuo

　 More details

To develop an automatic and continuous monitoring system for debris wood in rivers, we attempted to confirm whether image processing of thermography is available to detect the floating litter and debris wood on water surface in rivers. In this study, we conducted field measurement and laboratory experiments to compare the thermal and visible images for floating litters and evaluate the accuracy for detecting the floating litters. The results indicate that the image processing of thermography can detect the floating litters when there is the difference of temperature between water surface and floating litter. It is also noted that the processing processes with the binarization and sobel filter are useful to detect the floating litters by using appropriate parameters.
Changes of the physical conditions and biodiversity of tidal flats before and after a high-dam removal

Grant number：24310174 2012.4 - 2015.3

Japan Society for the Promotion of Science Kyushu University Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

ONIKURA Norio, SHIMATANI Yukihiro, OHTSUKI Kazuaki, MINAGAWA Tomoko, IYOOKA Hiroki

　 More details

We investigated the physical conditions and biodiversity of tidal flats around the estuary of the Kuma River. The deconstruction of a high-dam located approximately 20 km upstream from the river mouth begun in 2012, therefore we selected the river mouth as our survey area with the expectation of sediment outflow from the removed dam. The increase in base ground level in tidal flats mostly occurred in high water season, suggesting that sediments supplied from the river contribute to the homeostatic ground level height of tidal flats. Sediment composition in most sites had changed from mud to sand as the dam removal progressed, indicating that the sand which had previously accumulated at the dam eventually arrived at the tidal flats. Approximately 20% of the survey sites had faunal changes and an increase in species richness as dam removal progressed. We conclude that the sediment outflow from the river upstream contributes to the homeostatic mechanisms of the tidal flat ecosystem.
Evaluation of human impact on thermal environment of subtropical estuary in association of the restoration technique

Grant number：22310050 2010 - 2012

Japan Society for the Promotion of Science Kyushu University Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

SHIMATANI Yukihiro, OTSUKI Kazuaki

　 More details

The aim of this study was to examine the influence of human development of thermal environment of subtropical estuary and evaluate the biological impact by the physicalchanges. The rivers in the Amami Oshima Is. which have contrastive environments in the estuaries were selected as study sites and physical investigation and 3D flow simulation were conducted and the results were compared to clarify characteristic of thermal environment of estuary with tidal flat. An endangered freshwater fish, Plecoglossus altivelis ryukyuensis called “Ryukyu-Ayu” were selected as index of quality of ecological environment which use estuary in their larval stages. Ecological impacts were determined by estimating the field survival rate of the larva in an experimental model and the density of the copepods statistically. With these physical and ecological models, we analyzed predicted effect of tidal flat restoration showed that the restoratio n would result in a two-fold increase in the size of the suitable habitat area.
自然河口の持つ水域冷却機能のメカニズム解明と海水温上昇に対する保全再生手法の提案

Grant number：10J02534 2010 - 2011

日本学術振興会科学研究費助成事業特別研究員奨励費

大槻順朗

　 More details

平成23年度においては主に2つの現地観測を実施した.1つは,本研究対象種であるリュウキュウアユ仔稚魚の生息好適環境をより詳細に明らかにするため,奄美大島からの移入個体が再生産を行なう沖縄島ダム湖における水温連続観測であり,もうひとつは流動場と対象種の生息環境との関連性(水温・塩分濃度から規定される生理的条件および潮汐により輸送される餌資源条件)について明らかにするための流動場観測である.最大生息地である福地ダムダム湖と流入河川であるサンヌマタ川において,2010年12月～2月の冬季にかけて表層・底層(1m深)水温及び水位観測を実施した.これより,流入河川水水温については平均15℃,ダム湖水温は最高21℃であり,両者には明瞭な水温差が生じていることが明らかになった.ただし,ダム湖においても平均的な水温は20℃以下であり,対象種の生育環境として良好であると言え,室内実験値をベースとしたモデルを用いた生存率推定値では,データ取得期間中,水温が最も高い12月のダム湖湖心においても68%と高い推定結果であり,地域個体群の絶滅が懸念される河内川に比べ30%以上高く(3月),河口環境が良好に保持されている役勝川河口域に比べても遜色ない.このようなことから,リュウキュウアユ沖縄ダム湖移入個体は,現自然個体生息地である奄美大島より低緯度に生息域を持つにも関わらず,再生産が可能となっていると考えられた.2011年10月に同じ河口域を持つにも関わらず成魚の生息個体数が異なる奄美大島役勝川・住用川河口域において,GPSフロートを用いた流動場観測を実施した.その結果,上げ潮時において,より多くのGPSフロートが合流点から役勝川を遡上する結果となり,住用川に流入するフロートはわずかで,かつ遡上距離も短かった.住用川は恒常的に役勝川より河床高が高い状態にあり,2010年の水害後は土砂堆積によりさらに上昇している.このことが遡上海水の挙動に影響をもたらしていると推察された.

▼display all

Papers

Spur Dike Applications for the Sustainability of Channels in Incised Steep Bend Streams Reviewed

Kazuaki Ohtsuki, Takanori Kono, Takashi Arikawa, Hisashi Taniwaki, Rei Itsukushima

Water 16 ( 4 ) 2024.2( eISSN：2073-4441 )

　More details

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

Japan’s rivers are shaped by distinctive topography and abundant rainfall, and they face flooding and sediment supply escalation concerns under climate change. Small- and medium-sized rivers tend to catch unprecedented forces that exceed planned levels, leading to substantial widening and excavation. Thus, there is a demand for a method that is capable of managing significant flood flows over an extended period. The spur dike can maintain channel clearance by promoting erosion as well as providing bank protection. However, the effectiveness of this spur dike function has not been well studied in small- and medium-sized rivers and curved reaches. In this study, we evaluate the function of spur dikes in improving channel sustainability based on examples of small- and medium-sized rivers that have maintained their channel for more than ten years after spur dike installation. First, the applicability of the empirical rule was evaluated by comparing it with actual cases of erosion depths in curved sections in Japan. Next, one-dimensional simulations were performed to evaluate the sustainability of the section over a long period. Finally, a depth-averaged morphodynamic simulation, including the secondary flow effect, was applied to evaluate the location of the flow core and elevation changes due to the spur dike. The results showed that a slight difference in the ratio of river curvature radius to river width (r/B) caused the river channel to be erosive and sedimentary. The reasons for the difference were the cross-sectional expansion caused by the excavation of the bend and the difference in the plane flow regime caused by the shift of the flow core to the inside of the bend. Although it is structurally challenging to reproduce localized scour around a spur dike in a depth-averaged simulation, it is essential for designing to apply the simulation model and combine empirical knowledge.

DOI： 10.3390/w16040575

Scopus
Drivers of rising monthly water temperature in river estuaries Reviewed

Rei Itsukushima, Kazuaki Ohtsuki, Tatsuro Sato

Limnology and Oceanography 2024.1( ISSN：0024-3590 eISSN：1939-5590 )

　More details

Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

Abstract

River estuaries are habitats for a variety of organisms, including many temperature‐sensitive species; water temperatures in estuaries are affected by several factors as they are influenced by both terrestrial and marine environments. Therefore, understanding the factors that influence river estuaries are essential for environmental management. However, no information exists on temperature change at high temporal resolution and over a wide area; moreover, the relationship with environmental factors has not yet been clarified. Here, we have described the actual status of water temperature change in riverine estuaries and its relationship with environmental factors for a wide area of the Japanese archipelago. Our results indicated that 217 of 294 rivers showed a significant monthly increase in water temperature. The average annual change in rates of water temperature increase was the highest in October at 0.090°C yr⁻¹ and lowest in February at 0.068°C yr⁻¹. Furthermore, snowfall, air temperature increase, sea water temperature, and land use were identified as factors increasing the rate of water temperature increase. Factors influencing the increase in river estuarine water temperature varied from month to month—with meteorological factors being the strongest influencers from spring to fall, and anthropogenic factors in winter. Our findings emphasize the importance of considering not only meteorological and oceanographic phenomena, but also anthropogenic influences and topographic features to understand the pattern of water temperature changes in river estuaries.

DOI： 10.1002/lno.12507
Evaluation of the Impact of Drainage Channel on Flood Flow in the Urban-Rural Landscape Reviewed

Ohtsuki, K. , Nishihiro, J., Kato, H., and Nakamura, K.

Proc. 14th International Symposium on Ecohydraulics, Nanjing, China 2022.11

　More details

Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
Feasibility of Traditional Open Levee System for River Flood Mitigation in Japan. Reviewed

Ohtsuki, Kazuaki; Itsukushima, Rei; Sato, Tatsuro;

Water 14 ( 9 ) 1343 2022.4

　More details

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：MDPI
荒瀬ダム撤去前後における球磨川水系潮間帯の底生生物の出現パターンの変化 Reviewed

小山彰彦; 乾隆帝; 伊豫岡宏樹; 皆川朋子; 大槻順朗; 鬼倉徳雄;

応用生態工学 21-00026 2022.3( ISSN：1882-5974 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：応用生態工学会
時系列的に見た洪水前・中・後などの水害リスク対応 Reviewed

末次忠司; 大槻順朗;

水利科学= Water science 65 ( 4 ) 56 - 77 2021.10

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：日本治山治水協会
2019 年台風 19 号 (令和元年東日本台風) 災害を踏まえた治水・環境への提言

中村太士; 島谷幸宏; 大槻順朗; 関根秀明; 瀧健太郎; 西廣淳; 原田守啓;

応用生態工学 21-00014 2021.9

　More details

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：応用生態工学会
Learning from the past: common sense, traditional wisdom, and technology for flood risk reduction developed in Japan Reviewed

Itsukushima, Rei; Ohtsuki, Kazuaki; Sato, Tatsuro;

Regional Environmental Change 21 ( 3 ) 1 - 16 2021.9

　More details

Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Berlin Heidelberg
流域治水の変遷及び課題と水害裁判 Reviewed

末次忠司; 大槻順朗;

水利科学= Water science 65 ( 3 ) 141 - 156 2021.8

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：日本治山治水協会
治水と環境の両立を目指した河道湾曲部の側方侵食を活用した拡幅形状の設定法 Reviewed

河野誉仁; 大槻順朗; 中村圭吾; 林田寿文;

河川技術論文集 27 631 - 636 2021.6

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人土木学会
2019 年台風19 号（令和元年東日本台風）災害を踏まえた応用生態工学災害調査団の活動　報告書

中村太士，島谷幸宏，厳島怜，大槻順朗，倉本宣，関根秀明，瀧健太郎，西廣淳，原田守啓，平林公男，皆川朋子，森誠一

2019 年台風19 号（令和元年東日本台風）災害を踏まえた応用生態工学災害調査団の活動　報告書 2021.3

　More details

Authorship：Corresponding author Language：Japanese Publishing type：(MISC) Meeting report etc.
A century of stream burial due to urbanization in the Tokyo Metropolitan Area Reviewed

ITSUKUSHIMA Rei,OHTSUKI Kazuaki

Environmental Earth Sciences 80 ( 237 ) 2021.3

　More details

Language：English Publishing type：Research paper (scientific journal) Publisher：Springer

DOI： 10.2208/kaigan.68.I_1071

Other Link： http://jglobal.jst.go.jp/public/201502288465583927
2019 年台風19 号（令和元年東日本台風）災害を踏まえた治水・環境への提言

中村太士，島谷幸宏，厳島怜，大槻順朗，倉本宣，関根秀明，瀧健太郎，西廣淳，原田守啓，平林公男，皆川朋子，森誠一

2019 年台風19 号（令和元年東日本台風）災害を踏まえた治水・環境への提言 2021.1

　More details

Authorship：Corresponding author Language：Japanese Publishing type：(MISC) Meeting report etc.
Influences of river channel planar shapes on characteristics of fish habitat in small-middle sized streams Reviewed

Ohtsuki, K. Mori T., Nakamura K. and Kayaba Y

Proc. 22nd IAHR-APD 2020.9

　More details

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)
Survey Report of a Levee Break on Chikuma River caused by Typhoon No.19 in 2019 and Analysis of Flood Control Measures Reviewed

SUETSUGI Tadashi, OHTSUKI Kazuaki

75 ( 2 ) 136 - 148 2020.8

　More details

Language：Japanese Publishing type：Research paper (scientific journal)
"SATOYAMA green-infrastructure", a measure for climate change adaptation: potential for multipurpose usage of abandoned paddy on small valley bottoms in the Lake Inbanuma watershed, Chiba, Japan. Reviewed

NISHIHIRO Jun,OHTSUKI Kazuaki,KOHZU Ayato,KATO Hiroki,OGASAWARA Shogo,SATAKE Yasutaka,SHOJI Taro,HASEGAWA Masami,KONDOH Akihiko

Ecology and Civil Engineering 64 ( 3 ) 136 - 148 2020.3

　More details

Language：English Publishing type：Research paper (scientific journal)

Other Link： http://id.ndl.go.jp/bib/030605738
河川 CIM (3 次元川づくり) の考え方と標準化に向けた取り組み・課題 (特集河川管理の高度化・効率化に向けた最新の動向)--(革新的河川技術プロジェクト: 仕組みと第一弾~ 第五弾の紹介) Reviewed

中村圭吾, 林田寿文, 大槻順朗, 小林一郎

河川 76 ( 3 ) 41 - 45 2020.3

　More details

Language：Japanese Publishing type：Research paper (scientific journal)
A SIMPLE METHOD FOR ASSESMENT OF COLONIZATION RISK OF A LARGE FILAMENTOUS ALGAE Cladophora glomerata AT DAM DOWNSTREAM REACHES USING BED MATERIAL SIZE DISTRIBUTION DATA Reviewed

MIYAGAWA Yukio, ONODA Yukio, OHTSUKI Kazuaki, NAKAMURA Keigo

25 2019

　More details

Language：Japanese Publishing type：Research paper (scientific journal)
Effects of sediment released from a check dam on sediment deposits and fish and macroinvertebrate communities in a small stream Reviewed

Rei Itsukushima,Kazuaki Ohtsuki,Tatsuro Sato,Yuichi Kano,Hiroshi Takata,Hiroaki Yoshikawa

Water (Switzerland) 2019

　More details

Language：English Publishing type：Research paper (scientific journal)
Influence of Microtopography and Alluvial Lowland Characteristics on Location and Development of Residential Areas in the Kuji River Basin of Japan Reviewed

ITSUKUSHIMA Rei,OHTSUKI Kazuaki,SATO Tatsuro

Sustainability 68 ( 2 ) 2019

　More details

Language：English Publishing type：Research paper (scientific journal)

DOI： 10.2208/kaigan.68.I_1071

Other Link： http://jglobal.jst.go.jp/public/201502288465583927
RELATIONSHIP AMONG RIVER PLANE SHAPES, FLOW ENVIRONMENT AND FISH ASSEMBLAGE A ON STEEP SMALL-MEDIUM-SIZED RIVERS Reviewed

OHTSUKI Kazuaki, MORI Terutaka, HAYASHIDA Kazufumi, NAKAMURA Keigo, KAYABA Yuichi

74 ( 4 ) 2019

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
Study on Progress in Nature-Oriented River Management in Small- and Medium-Sized Rivers in Japan Reviewed

OHTSUKI Kazuaki,HAYASHIDA Kazufumi, NAKAMURA Keigo, KAYABA Yuichi

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 74 ( 4 ) I_913 - I_918 2018( ISSN：1880-8751 )

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

 The sediment release and deposition characteristics associated with sediment replenishment by outlet gate operation of check dam in the step-pool structured small stream (Kamogawa River in Fukuoka Pref.) were investigated. The basin was mainly consisted of sandy weathered granite and the check dam had been trapped 13,700 m3 of sediment in a mutual layer with sand and cohesive cray since establishment 29 years ago. After the gate opening on March 2017, approximately 12.1% of total sediment volume was immediately released and further 6.6% flowed out in the subsequent floods. Estimated suspended sediment (SS) concentration was reached to about 1200 mg/L in downstream. The sediment from upstream filled some pools in the steep section. It suggest that sediment release can influenced in change of land form and substrate characteristics even in the step-pool section.

DOI： 10.2208/jscejhe.74.I_913

CiNii Books

Other Link： http://id.ndl.go.jp/bib/028905522
Flood Disaster by the Kinu-gawa River Flooding in 2015 Reviewed

OHTSUKI Kazuaki, NIHEI Yasuo

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 72 ( 4 ) I_709 - I_714 2018( ISSN：1880-8751 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

 A measure to reduce the environmental impacts of dams is a dam removal which has been conducted in Arase dam, Kuma River. However we have poorly understood influences of dam removal or construction on riverbed evolution in lower reach of dam. In this study, we attempted to clarify the response of riverbed evolution after dam removal or construction by data analysis for long-term monitored riverbed and 1D analysis for riverbed evolution under various sediment supply conditions. The numerical results indicated that the propagation process of riverbed evolution to the downstream direction seemed to be a kind of diffusion process. Using this results, we can simply evaluate the riverbed evolution in lower reach after completing removal of Arase dam.

DOI： 10.2208/jscejhe.72.I_709

CiNii Books

Other Link： http://id.ndl.go.jp/bib/027185123
SEDIMENT PROPERTIES IN STEEP STREAM ASSOCIATED WITH THE SEDIMENT REPLENISHMENT BY CHECK DAM DRAIN OUTLET OPENING Reviewed

ITSUKUSHIMA Rei,OHTSUKI Kazuaki,SATO Tatsuro,TANAKA Wataru

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 19 ( 2 ) 259 - 267 2018( ISSN：1344-3755 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Ecology and Civil Engineering Society

DOI： 10.3825/ece.19.259

CiNii Books

J-GLOBAL

Other Link： http://id.ndl.go.jp/bib/028049843
水害時における調査方法の標準化および共通データベース構築に向けたガイドラインの提案 Reviewed

呉修一,大槻順朗,八木澤順治,永野博之,二瓶泰雄

河川技術論文集 72 ( 4 ) 2017

　More details

Language：Japanese Publishing type：Research paper (scientific journal)
Report on flood disaster in Kinu River, occurred in September, 2015. Reviewed

NAKAMURA Futoshi,SHIMATANI Yukihiro,NISHIHIRO Jun,OHTSUKI Kazuaki,ITSUKUSHIMA Rei,YAMADA Hiroyuki

Ecology and Civil Engineering 37 ( 1 ) 19 - 25 2017

　More details

Language：Japanese Publishing type：Research paper (scientific journal)

Other Link： http://id.ndl.go.jp/bib/028909081
SEDIMENT RELEASE AND DEPOSITION PROPERTIES IN THE KUMAGAWA RIVER ASSOCIATED WITH THE ARASE DAM REMOVAL PROJECT Reviewed

OHTSUKI Kazuaki, IYOOKA Hiroki, NIHEI Yasuo

伊豫岡宏樹 12 65 2017

　More details

Language：Japanese Publishing type：Research paper (scientific journal)
SEDIMENT EROSION AND DEPOSITION IN THE FORMER ARASE DAM RESERVOIR UNDER THE DAM REMOVAL PROJECT Reviewed

OHTSUKI Kazuaki,IYOOKA Hiroki,NIHEI Yasuo,YOSHIMORI Yusuke,NAKAMURA Shunsuke,ONIKURA Norio

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 71 ( 4 ) I_1219 - I_1224 2016( ISSN：1880-8751 )

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

For comprehensive water and land management, it is necessary to monitor related items like water level, discharge, water quality and sediment transport although bed-load transport is not generally monitored even in large rivers. For this, we examined the fundamental applicability of a simple evaluation method of bed-load transport which is calculated using observed data for water level, discharge, bathymetory and bed material, and bed-load formula like Ashida-Michiue formula. This method is applied to the calculation of bed-load transport in Edogawa River. General model for 1-D simulation of river-bed evolution is also applied for calibration. The calulated results of bed-load transport obtained by both the models were in acceptable agreements even though the bed fluctuation exceeded 0.5 m. It means the fundamental validity of the present simple method for bed-load transport.

DOI： 10.2208/jscejhe.71.I_1219

CiNii Books

Other Link： http://id.ndl.go.jp/bib/026355310
THE COUNTERMEASURES FOR FLOOD MITIGATION EVALUATED BY 1D AND 2D COUPLED MODELS Reviewed

M. A. C. Niroshinie,Yasuo Nihei,Kazuaki Ohtsuki,Shoji Okada

11TH INTERNATIONAL SYMPOSIUM ON ECOHYDRAULICS 784 - 791 2016

　More details

Language：English Publishing type：Research paper (scientific journal)
EVALUATION OF OVERFLOW DURATION ON RIVER LEVEE BASED ON 1D UNSTEADY FLOW ANALYSIS AND DEVELOPMENT OF SIMPLE METHOD Reviewed

HATTORI Taito,NIHEI Yasuo,OHTSUKI Kazuaki,M.A.C Niroshinie

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 71 ( 4 ) I_1285 - I_1290 2016( ISSN：1880-8751 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Levee breaches occurred at a lot of rivers mainly due to overflow of extreme flood. However it is not clear what hydraulic and material conditions can cause failures of conventional levees or not due to the lack of field data on levee failures. In the present study, we conducted field surveys for levee failures due to overflow erosion and made database of the levee failures. In the field surveys, we collected hydraulic conditions like overflow depth, failure conditions and size of levees. The results indicated that 1) the levee breach appeared at overflow depth more than 0.5m, corresponding to the previous studies, and 2) degree of the levee damages was not appreciably related to the covering conditions of top and slopes of levees.

DOI： 10.2208/jscejhe.71.I_1285

CiNii Books

Other Link： http://id.ndl.go.jp/bib/026355614
DATA ANALYSIS AND NUMERICAL EXPERIMENTS OF RIVERBED EVOLUTION IN LOWER REACH OF ARASE DAM Reviewed

YOSHIMORI Yusuke,OHTSUKI Kazuaki,NIHEI Yasuo

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 71 ( 4 ) I_979 - I_984 2016( ISSN：1880-8751 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

The Arase Dam on the Kumagawa River in Kumamoto Pref., Japan, has been subsumed under removal project as the first high dam removal in Japan, - a process slated to influence the downstream sedimentology. During the first stage of the removal, in April 2010, the dam’s gates were opened. In this study, we investigated sediment characteristics on the river and tidal flat and estimated the changes in sediment outflow using a one-dimensional uniform bed load simulation. A remarkable level of sediment coarsening was identified on the surface of the tidal flat. The deposition rate on the tidal flat, which was estimated by vertical profiles of sediment size distribution and bed load flux, corresponded to the opening operation of the dam’s gate. The bed load simulation of the Arase Dam’s reservoir shows that the gate opening could increase the sediment outflow.

DOI： 10.2208/jscejhe.71.I_979

CiNii Books

Other Link： http://id.ndl.go.jp/bib/026352187
EVALUATION OF SEDIMENT, NUTRIENT AND ORGANIC MATTER TRANSPORT FROM A WIDE RANGE OF LAND TO COASTAL OCEAN Reviewed

SUGIMURA Ayumu,TAKEDA Akira,NIHEI Yasuo,OHTSUKI Kazuaki

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 70 ( 5 ) I_87 - I_94 2015( ISSN：2185-6648 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JAPAN SOCIETY OF CIVIL ENGINEERS

 The heavy rain disaster is increasing in Japan. Activities of the disaster risk management based on communities are important in small and aged community. The purposes of this paper are arranging the subjects of the community based disaster prevention activities and supporting to flood risk in these community. The research region is Susa distrct in Hagi city which the record torrential rain fall caused heavy flood disaster on 28th September, 2013. Social researches were carried out for this disaster. Official announcement time for evacuation advisory was later than the standard. The residents evacuated in the very dangerous situation. The local government should give refuge preparation informormations considering with necessary time for refuge of aged persons.

DOI： 10.2208/jscejer.70.I_87

Other Link： http://id.ndl.go.jp/bib/025863615
THERMAL ENVIRONMENT IN TIDAL FLAT AND MANGROVE AREAS BASED ON FIELD MEASUREMENTS OF WATER AND SOIL TEMPERATURES Reviewed

Kazuaki Ohtsuki,Ryonosuke Endo,Yasuo Nihei,Wataru Harada,Yukihiro Shimatani

PROCEEDINGS OF THE 36TH IAHR WORLD CONGRESS 10 ( 6 ) 1099 - 1109 2015( ISSN：1881-2473 eISSN：1883-8030 )

　More details

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Fuji Technology Press

© 2015, Fuji Technology Press. All rights reserved. Coupled one and two-dimensional (1D-2D) hydraulic models play a significant role in analyzing flooding problems to find possible solutions as they can reproduce the actual situations relatively accurately. This paper summarizes approaches to flood inundation analysis and mitigation with coupled 1D-2D hydraulic models of a small mountain watershed in Japan. A detailed flood inundation model including the effects of drainages, pumping, inflow from mountain subwatersheds and flood gates is developed using coupled 1D-2D hydraulic models. The model is applied to the inundation in Kubokawa, a small town in Kochi Prefecture, Japan on August 9-10, 2014. Simulated and observed maximum water levels along the river and maximum inundations in the flood plain are compared and found to be consistent. Causes of the flooding and percentage of contribution are quantitatively identified, and countermeasures to reduce the effects of flooding are proposed.

DOI： 10.20965/jdr.2015.p1099

Web of Science

Scopus
Flood inundation analysis and mitigation with a coupled 1D-2D hydraulic model: A case study in Kochi, Japan Reviewed

M. A.C. Niroshinie,Yasuo Nihei,Kazuaki Ohtsuki,Shoji Okada

Journal of Disaster Research 2965 - 2972 2015

　More details

Language：English Publishing type：Research paper (scientific journal)
APPLICABILITY FOR SIMPLE METHOD OF BED-LOAD TRANSPORT Reviewed

SUGIMURA Ayumu,NIHEI Yasuo,OHTSUKI Kazuaki

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 71 ( 2 ) I_631 - I_636 2015( ISSN：1884-2399 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

 This study is to evaluate the long-term evolution of morphological changes in tidal flat focusing on a characteristic of water level changes at river mouth, where the water level is distorted and separate against tidal level during ebb tide. For the estimation relationships between the elevation change and parameters representing the water level characteristics, two-dimensional current models are developed and the relationships were applied to the field observation data. As a result, we found the elevation decreased from 60's to 90's and slightly increased from around 2005. The estimated changes of sediment volume on the tidal flat clearly corresponded to the sediment losing rate by dam trapping and sand mining with about 10 years delay.

DOI： 10.2208/kaigan.71.I_631

Other Link： http://id.ndl.go.jp/bib/027081476
MONITORING AND EVALUATION OF SEDIMENTOLOGY ON RESERVOIR TO ESTUARINE TIDAL FLAT FOR ASSESSMENT OF DAM REMOVAL EFFECTS Reviewed

KAWASAKI Takashi,OHTSUKI Kazuaki,NIHEI Yasuo,HIROSE Yutaro,YOSHIMORI Yusuke,HANASAKI Takuro,IYOOKA Hiroki,ONIKURA Norio

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 72 ( 4 ) I_1165 - I_1170 2015( ISSN：1880-8751 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

 Riverbank failures by overflow erosion are frequently occurred by extreme floods. However, studies of the relationship between hydraulic conditions, material conditions and levee failures by overflow erosion is insufficient, specially, the relationship between overflow duration and levee failures by overflow erosion. In the present study, we estimated overflow duration that is difficult to measure in the field surveys, by the one-dimensional simulation of unsteady flow. From that, a simplified estimation method of overflow duration is proposed. The results indicated that the simulation of this study can reproduce overflow duration in extreme flood. Furthermore the simplified estimation method of overflow duration is valid.

DOI： 10.2208/jscejhe.72.I_1165

CiNii Books

Other Link： http://id.ndl.go.jp/bib/027186477
STUDY ON CONDITIONS OF LEVEE BREACH DUE TO OVERFLOW EROSION BASED ON DATABASE OF FIELD MEASUREMENT Reviewed

HATTORI Taito,NIHEI Yasuo,OHTSUKI Kazuaki,YAGISAWA Junji

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 71 ( 4 ) I_1261 - I_1266 2015( ISSN：1880-8751 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

In Oct., 2013, typhoon no.1326 brought heavy rain, which exceeded totally 800 mm and showed 120 mm per hour, in Izu Ohshima. Then huge sediment disaster has occured in Motomachi area, located at west part of Izu Ohshima. In this study, we clarfiy building damages due to the sediment disaster. For this, we conducted field survey for bulding damage and inundation depth in the above area and also performed numerical simulation of mud flow to examine the fluid force on buildings. The results indicated that building damages in mountain and sea sides of the above area were caused by the fluid force of mud flow and channel clogging due to sediment and drift wood, respectively. The range of building damages in the sea-side area was limited 40- 60m from the Ookanazawa channel in the lateral direction.

DOI： 10.2208/jscejhe.71.I_1261

CiNii Books

Other Link： http://id.ndl.go.jp/bib/026355523
BUILDING DAMAGES DUE TO SEDIMENT DISASTER ON IZU OHSHIMA IN OCTOBER,2013 Reviewed

NIHEI Yasuo,NAGANO Hiroyuki,OHTSUKI Kazuaki,YAKITA Wataru,KAJI Jyunnya

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 72 ( 4 ) I_853 - I_858 2015( ISSN：1880-8751 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

 The Arase Dam on the Kumagawa River in Kumamoto Pref., Japan, has been subsumed under removal project as the first high-dam removal in Japan. In March 2015, the dam crest on the right side has been removed with the first flushing and continuity of flow and sediment has been restored. In this study, we conducted elevation measurement with RTK-GNSS and SfM analysis using UAV aerial photo set. As a result of our investigation, we found significant scouring in the upper stream of the dam site caused by several times of floods (Q_max=2000-3000 m³/sec). According to our estimation, 1.5 * 10⁵ m³ of the sediment on former reservoir (26% of total) are washed to the downstream and 1.8 * 10⁵ m³ was found on the immediate downstream of the dam site and it created new sand bar.

DOI： 10.2208/jscejhe.72.I_853

CiNii Books

Other Link： http://id.ndl.go.jp/bib/027185614
LONG-TERM ANALYSIS ON GROUND ELEVATION CHANGE OF TIDAL FLAT USING WATER LEVEL IN RIVER MOUTH AT LOW TIDES Reviewed

OHTSUKI Kazuaki,NIHEI Yasuo

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 71 ( 2 ) I_1423 - I_1428 2015( ISSN：1884-2399 )

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

 Although the supply of sediment, nutrient and organic matter from inland has a significant role on morphology and water quality in coasts, there is little monitoring data for the material transport. In this study, we present a simplified approach for evaluating material transport from a wide range of land to coastal ocean and apply it to evaluate the material transport into Pacific Ocean from Tohoku and Kanto districts. The results indicate that the present approach with water-quality database under high-flow conditions and non-dimensional L-Q relation can give a good agreement with the observed data, showing the fundamental validity of the present approach. The evaluated bed load indicates that the suspended load was about 6 times bed load transport, of which 99 % were occupied in class A rivers.

DOI： 10.2208/kaigan.71.I_1423

Other Link： http://id.ndl.go.jp/bib/027097319
District disaster prevention plan for heavy rain disaster in small and aged communities in case of Susa Reviewed

KAMIYA Daisuke,AKAMATSU Yoshihisa,WATANABE Gakuho,OHTSUKI Kazuaki,NIHEI Yasuo,KAMITSURU Shogo

Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 70 ( 4 ) I_1447 - I_1452 2014( ISSN：1880-8751 )

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

The northern part of the Yamaguchi Pref. was attacked by record severe rain storm called Yamaguchi-Shimane heavy rain, in which the maximum 1 hour rainfall was over 130mm and total over 350mm at the Susa weather station on July 28th, 2013. This paper describes the characteristics of the flood disaster in Susa River basin. The highest water depth reached to 2m and was beyond that expected in flood hazard map there. 4 dike breaks occurred by the flood. According to our flood simulation, inland flooding contributes to the flood more than river water flooding.

DOI： 10.2208/jscejhe.70.I_1447

Other Link： http://id.ndl.go.jp/bib/025438000
FIELD SURVEY AND ANALYSIS OF FLOOD DISASTER IN THE SUSA RIVER ON JULY, 2013 Reviewed

OHTSUKI Kazuaki,NIHEI Yasuo,AKAMATSU Yoshihisa

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 70 ( 4 ) I_1201 - I_1206 2014

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.2208/jscejhe.70.I_1201

Other Link： http://id.ndl.go.jp/bib/025434745
STUDY ON THERMAL ENVIRONMENT IN TIDAL FLAT AND MANGROVE AREA BASED ON LONG-TERM MEASUREMENT OF WATER AND SOIL TEMPERATURE Reviewed

ENDO Ryonosuke,OHTSUKI Kazuaki,NIHEI Yasuo,HARADA Wataru,SHIMATANI Yukihiro

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 69 ( 4 ) I_1063 - I_1068 2014

　More details

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

SS Flux, particle size distribution and organic matter ratio under flooding conditions were investigated in the Kumagawa River in which dam removal operating will be conducted for the first time in Japan. The results showed 99% of SS were categorized into silt or clay and median diameter of particles had a tendency to be smaller than that of other rivers. The results of non-uniform sediment rating curve (L=aQ^b) analysis indicated that the coefficient b were closely dependent on particle size. Total SS transports into the estuary were estimated 179*10⁴ ton from April, 2010 to July, 2012 and small silt (23.6~5.07µm) element had the best contribution.

DOI： 10.2208/jscejhe.69.I_1063

Other Link： http://ci.nii.ac.jp/naid/130004558110
COMPARISON OF SEAWATER INTRUSION IN TWO RIVERS FLOWING INTO A SAME INNER BAY:FOR HABITAT EVALUATION OF RYUKYU-AYU Reviewed

HARADA Wataru,OHTSUKI Kazuaki,NIHEI Yasuo,TAKAHASHI Mayumi,SHIMATANI Yukihiro

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 57 1_1063 - 1068 2013

　More details

Language：Japanese Publishing type：Research paper (scientific journal)

Other Link： http://id.ndl.go.jp/bib/024918171
Primary Investigations of Sediment Transport and Deposition for Dam Removal Project, Arase Dam, Kumagawa River, Japan Reviewed

Kazuaki Ohtsuki,Takashi Kawasaki,Naoya Kitamura,Yasuo Nihei,Norio Onikura

PROCEEDINGS OF THE 35TH IAHR WORLD CONGRESS, VOLS I AND II 60 ( 11 ) 8 - 13 2013

　More details

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

Other Link： http://id.ndl.go.jp/bib/029307114
Evaluation of Human Impact on Estuarine Habitat of Endangered Fish Larvae and Effect Prediction for the Restoration Reviewed

Kazuaki Ohtsuki,Yasuo Nihei,Yukihiro Shimatani

PROCEEDINGS OF THE 35TH IAHR WORLD CONGRESS, VOLS I AND II 2294 - 2302 2013

　More details

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)
EVALUATION FOR SPAWNING SITE OF RYUKYU-AYU USING AN IN-SITU MEASUREMENT METHOD OF RIVERBED-SCOUR POTENTIAL Reviewed

OHTSUKI Kazuaki,HIRANO Kazunari,NIHEI Yasuo

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 69 ( 4 ) I_1237 - I_1242 2013

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Estuaries play an important role to create suitable habitat for larval and juvenile fishes but there are little study to evaluate human impact on this function. In this study, investigations of habitat suitability for Ryukyu-ayu, endangered fish species in Amami Oshima Is, were conducted in two contrasting estuaries focused on the physiological condition and feed resource distribution by using field observation and numerical 3D flow simulation results. As a result suitable area was strictly limited in the modified estuary and numerical experiment results support that tidal flat restoration can create twice area of suitable habitat compared present condition.

DOI： 10.2208/jscejhe.69.I_1237

Other Link： http://ci.nii.ac.jp/naid/130004558142
NON-UNIFORM SUSPENDED-SEDIMENT TRANSPORT IN KUMAGAWA RIVER UNDER FLOODING CONDITIONS Reviewed

OTSUKI Kazuaki,KAWASAKI Takashi,NIHEI Yasuo,ONIKURA Norio

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 69 ( 4 ) I_1231 - I_1236 2013

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Spawning site conditions of endangered subspecies of Japanese sweetfish named Ryukyu-ayu inhabiting only in the Amami-Oshima Is., Southern Japan were evaluated with an in-situ measurement method of riverbed-scour potential to clarify substratum adhesion of riverbed. In the present method, man-made flow was occurred near river bed and the resultant scour depth was measured. The field survey using the present method was conducted in Yakugachigawa River in Amami-Oshima Is. The result shows that the present method was found to be more suitable for evaluating spawning site condition than a well-known penetrometer. The results also indicate that appropriate parameters for evaluation of spawning site conditions are discussed using scour depth, grain size and flow condition

DOI： 10.2208/jscejhe.69.I_1231

Other Link： http://ci.nii.ac.jp/naid/130004558141
EVALUATION OF HUMAN IMPACT ON ESTUARINE NURSERY AREA FOR RYUKYU-AYU LARVA Reviewed

OHTSUKI Kazuaki,NIHEI Yasuo,SHIMATANI Yukihiro

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 69 ( 4 ) I_1243 - I_1248 2013

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Although the Sumiyo River has a similar size of basin and same inner bay to the Yakugachi River, it has smaller population of endangered freshwater fish called Ryukyu-Ayu, in Amami Oshima Is. Focusing on the upstream migration of the target species from inner bay, seawater intrusion measurement were conducted with GPS installed float, STD and ADCP. The result showed that the Yakugachi river has 6.9 times of total discharge from inner bay compared to the Sumiyo River from ebb tide to high tide. We speculated that the sill located on the entrance of the Sumiyo River is a blocking factor for seawater intrusion from inner bay.

DOI： 10.2208/jscejhe.69.I_1243

Other Link： http://ci.nii.ac.jp/naid/130004558143
Study of sediment transport and deposition in the Kuma River and tidal flat for evaluation of environmental impact associated with removal of the Arase Dam Reviewed

OHTSUKI Kazuaki,KITAMURA Naoya,NIHEI Yasuo,ISHIGA Hiroaki,MINAGAWA Tomoko,SHIMATANI Yukihiro

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 68 ( 4 ) I_709 - I_714 2012

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Our target species, Ryukyu-Ayu (Plecoglossus altivelis ryukyuensis) are thought that they are facing on distinct because of high water temperature in estuary of their habitat on their juvenile stage. It is necessary for conservation to evaluate how that condition effect on Ryukyu-Ayu. The aim of this study is to investigate an impact on their habitat suitability caused by development in estuary. To evaluate this we tried to apply the result of survival experiment on Ryukyu-Ayu larva to actual sites. This means we built statistical model to estimate 24 hours survival rate (ESR) from the experiment results and calculate ESR using field observation data of water temperature and salinity. The results show The ESR in habitat of artificial estuary is less than 40% even though more than 80% in all observation point in natural estuary and that carry out 1 deg water temperature falling can provide about 20% ESR rising.

DOI： 10.2208/jscejhe.68.I_709

Other Link： http://ci.nii.ac.jp/naid/130004557742
EVALUATION OF ESTUARINE HUMAN IMPACT ON FISH LARVA HABITAT IN POINT OF PHYSIOLOGICAL CONDITION Reviewed

OHTUSKI Kazuaki,SHIMATANI Yukihiro

Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 52 ( 52 ) 361 - 366 2012( ISSN：1880-8751 )

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Urban development causes serious changes to watershed conditions by decreasing storage area, introducing pavement and channeling. As a result, the peak discharge has been increasing and the arrival time of peak becomes early. The purpose of this study is to investigate the state of retention facilities such as irrigation ponds and paddy area in Mikasa River watershed. The result of investigation shows the rate of the capacity of flood control of dam, ponds and paddy area are 37.1%, 14.6%, 48.3% and total capacity is 3, 063, 000m³.<BR>For the estimate of the storage facility effects, we applied the distributed runoff model considering ponds and paddy area effects. The result of calculation showed that the peak discharge at Sanno Bridge decreased 36m³/s by dam, 31m³/s by ponds and 36m³/s by paddy area.

DOI： 10.2208/prohe.52.361

J-GLOBAL

Other Link： http://ci.nii.ac.jp/naid/130004044038
THE OBSERVATION FOCUSED ON THE COOLING FUNCTIONS OF TIDAL FLAT AND MANGROVE FOR THE PROTECTION OF THE RYUKYU-AYU Reviewed

OHTUSKI Kazuaki,SHIMATANI Yukihiro SHINOMIYA Akihiko, UENO Ayana, KAWAGUCHI Youichi

水工学論文集(CD-ROM) 70 ( 4 ) I.1201-I.1206 (J-STAGE) 2009

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

DOI： 10.2208/jscejhe.70.I_1201

Other Link： http://jglobal.jst.go.jp/public/201502223683859506
THE ESTIMATION OF FLOOD CONTROL BY STORAGE FACILITY IN THE MIKASA RIVER WATERSHED Reviewed

OTSUKI Kazuaki,OYAGI Yutaka,SHIMATANI Yukihiro,PARK Kichan

PROCEEDINGS OF HYDRAULIC ENGINEERING 51 ( 51 ) 391 - 396 2008( ISSN：0916-7374 )

　More details

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Urban development causes serious changes to watershed conditions by decreasing storage area, introducing pavement and channeling. As a result, the peak discharge has been increasing and the arrival time of peak becomes shorter. The purpose of this study is to estimate the change of flood discharge by transition of landuse in the Mikasa River watershed with the effect of the existing storage facilities such an irrigation ponds. <BR>To estimate that we applied the distributed runoff model considering the landuse in 1900, 1950, 1976 and 1997 of the Mikasa River watershed about flood disaster in July 19, 2003. <BR>The result of calculation showed that the peak discharge at Sanno Bridge has been increased 27% for the last 100 years result from transition of landuse in the Mikasa River watershed.

DOI： 10.2208/prohe.51.391

CiNii Books

J-GLOBAL

Other Link： http://id.ndl.go.jp/bib/2980816
THE CHANGE OF FLOOD DISCHARGE ACCORDING TO TRANSITION OF LANDUSE IN THE MIKASA RIVER WATERSHED Reviewed

OYAGI Yutaka,OTSUKI Kazuaki,SUGIMOTO Chikako,SHIMATANI Yukihiro,ESAKI Tetsuro,PARK Kichan

PROCEEDINGS OF HYDRAULIC ENGINEERING 56 ROMBUNNO.119 2007

　More details

Language：Japanese Publishing type：Research paper (scientific journal)

Other Link： http://jglobal.jst.go.jp/public/201202201918070942

▼display all

Presentations

３次元データを活用した川づくりの最新事情について Major achievement

大槻順朗

リバーフロント研究所第11回大河川QAウェブセミナー（オンライン） 2023.10 （公財）リバーフロント研究所

　More details

Event date： 2023.10

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：オンライン
3D-based river design and management in Japan: Challenges and perspectives International conference

Kazuaki Ohtsuki

Intl. Sympo. River Restoration in Switzerland and Japan 2023.10 Ecology and Civil Engineering Society (ECES), Tokyo Division

　More details

Event date： 2023.10

Language：English Presentation type：Oral presentation(general)

Venue：Tokyo Institute of Technology Country：Japan
3D-based river design and management in Japan: challenge and perspective Invited International conference

Ohtsuki, K

Intl. Symposium on Aquatic Ecosystem and Environmental Health first China Wenzhou International Wetland Forum (Online) 2022.11

　More details

Language：English Presentation type：Oral presentation(invited, special)
Assessment of the Impact of Water Use on the Fish Fauna of Small Rivers on Alluvial Fan in Japan International conference

Tomaru, K., Ohtsuki, K. , Kurata, M., Nakamura, T., and Yaegashi, S.

12nd Conf. Intl. Consortium of Landscape and Ecological Engineering ICLEE 2022 2022.11

　More details

Event date： 2022.11

Language：English Presentation type：Oral presentation(general)
Assessment of the Impact of Water Use on the Fish Fauna of Small Rivers on Alluvial Fan in Japan International conference

Tomaru, K, Ohtsuki, K, Kurata, M, Nakamura, T, Yaegashi, S

12nd Conf. Intl. Consortium of Landscape and Ecological Engineering ICLEE 2022 2022.11 ICLEE

　More details

Language：English Presentation type：Oral presentation(general)
多自然川づくりのレベルアップのための3次元ツールの活用について Major achievement

大槻順朗

令和4年河川技術セミナー 2022.11 （一社）建設コンサルタンツ協会中部支部

　More details

Event date： 2022.11

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：ウインクあいち（愛知）
3次元川づくりの実現に向けて Major achievement

大槻順朗

株式会社サンポーへの技術訪問 2022.11 山梨県

　More details

Event date： 2022.11

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：株式会社サンポー（山梨）
3次元川づくりの実現に向けて

大槻順朗

株式会社サンポーへの技術訪問 2022.11 山梨県

　More details

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：株式会社サンポー（山梨）
多自然川づくりのレベルアップのための3次元ツールの活用について

大槻順朗

令和4年河川技術セミナー 2022.11 （一社）建設コンサルタンツ協会中部支部

　More details

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：ウインクあいち（愛知）
風水害の減災 Major achievement

大槻順朗

令和４年度「甲斐の国・防災リーダー」養成講座 2022.10 山梨県

　More details

Event date： 2022.10

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：山梨県防災学校（山梨）
風水害の減災

大槻順朗

令和４年度「甲斐の国・防災リーダー」養成講座 2022.10 山梨県

　More details

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：山梨県防災学校（山梨）
川づくりのデザインを変える最新３次元技術 Major achievement

大槻順朗

応用生態工学会若手のつどい勉強会 in 福岡　― 河口と干潟：ハビタットを見る目，紐解く技術 ― 2022.10 応用生態工学会（若手の会・普及連携委員会・応用生態工学会福岡）

　More details

Event date： 2022.10

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：九州産業大学（福岡市）
川づくりのデザインを変える最新３次元技術

大槻順朗

応用生態工学会若手のつどい勉強会 in 福岡 ― 河口と干潟：ハビタットを見る目，紐解く技術 ― 2022.10 応用生態工学会（若手の会・普及連携委員会・応用生態工学会福岡）

　More details

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：九州産業大学（福岡市）
Evaluation of the Impact of Drainage Channel on Flood Flow in the Urban-Rural Landscape International conference

Ohtsuki, K. , Nishihiro, J., Kato, H., and Nakamura, K.

14th International Symposium on Ecohydraulics, Nanjing, China 2022.10 IAHR

　More details

Event date： 2022.10

Language：English Presentation type：Oral presentation(general)

Venue：Online
Evaluation of the Impact of Drainage Channel on Flood Flow in the Urban-Rural Landscape International conference

Ohtsuki, K, Nishihiro, J, Kato, H, Nakamura, K

14th International Symposium on Ecohydraulics, Nanjing, China 2022.10 IAHR

　More details

Language：English Presentation type：Oral presentation(general)

Venue：Online
甲府盆地における利水利用が小河川の魚類相に与える影響の評価

外丸広大, 倉田佳歩, 大槻順朗, 中村高志, 八重樫咲子

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9

　More details

Event date： 2022.9

Language：Japanese Presentation type：Poster presentation
ゲームエンジンによる洪水流の可視化：伝統的治水システムの表現の試み

大槻順朗, 上條彩華, 牧野惇士, 佐藤隆宏, 長谷川英一

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9

　More details

Event date： 2022.9

Language：Japanese Presentation type：Poster presentation
木質バイオマス発電と組み合わせた水害防備林の持続可能な維持管理に向けた検討

村松輝哉, 大槻順朗

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9

　More details

Event date： 2022.9

Language：Japanese Presentation type：Poster presentation
谷津景観における放棄水田の湿地化による治水対策評価と対策優先順位の考え方についての検討

大槻順朗, 野尻雄介, 西廣淳, 加藤大輝

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9

　More details

Event date： 2022.9

Language：Japanese Presentation type：Poster presentation
ゲームエンジンによる洪水流の可視化：伝統的治水システムの表現の試み

大槻順朗, 上條彩華, 牧野惇士, 佐藤隆宏, 長谷川英一

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9

　More details

Language：Japanese Presentation type：Poster presentation
谷津景観における放棄水田の湿地化による治水対策評価と対策優先順位の考え方についての検討

大槻順朗, 野尻雄介, 西廣淳, 加藤大輝

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9

　More details

Language：Japanese Presentation type：Poster presentation
甲府盆地における利水利用が小河川の魚類相に与える影響の評価

外丸広大, 倉田佳歩, 大槻順朗, 中村高志, 八重樫咲子

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9

　More details

Language：Japanese Presentation type：Poster presentation
木質バイオマス発電と組み合わせた水害防備林の持続可能な維持管理に向けた検討

村松輝哉, 大槻順朗

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9

　More details

Language：Japanese Presentation type：Poster presentation
Nature-positiveを実現させるには－2030年にむけて－　第２部：パネルディスカッション「Nature-positiveを実現させるには」

大槻順朗

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9 日本緑化工学会・日本景観生態学会・応用生態工学会

　More details

Event date： 2022.9

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：つくば市
Nature-positiveを実現させるには－2030年にむけて－第２部：パネルディスカッション「Nature-positiveを実現させるには」

大槻順朗

日本緑化工学会・日本景観生態学会・応用生態工学会３学会合同 ELRつくば大会 2022.9 日本緑化工学会・日本景観生態学会・応用生態工学会

　More details

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：つくば市
メタバースを用いた川づくりの魅力とポイント Major achievement

大槻順朗

インフラ分野におけるメタバースの作り方と活用 2022.5 九州地方整備局

　More details

Event date： 2022.5

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：九州技術事務所（久留米市）
メタバースを用いた川づくりの魅力とポイント

大槻順朗

インフラ分野におけるメタバースの作り方と活用 2022.5 九州地方整備局

　More details

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：九州技術事務所（久留米市）
防災分野における影響と対策 Major achievement

大槻順朗

令和 3 年度地球温暖化対策セミナー「そのときあなたはどうする?~山梨・甲府への地球温暖化の影響」 2022.2 甲府市地球温暖化対策地域協議会

　More details

Event date： 2022.2

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：山梨県立図書館（山梨）
防災分野における影響と対策

大槻順朗

令和 3 年度地球温暖化対策セミナー「そのときあなたはどうする?~山梨・甲府への地球温暖化の影響」 2022.2 甲府市地球温暖化対策地域協議会

　More details

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：山梨県立図書館（山梨）
黄瀬川（狩野川水系）における被災について Major achievement

大槻順朗

2021年度河川災害シンポジウム 2022.2 土木学会

　More details

Event date： 2022.2

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー
黄瀬川（狩野川水系）における被災について

大槻順朗

2021年度河川災害シンポジウム 2022.2 土木学会

　More details

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー
3次元川づくりの幕開け～河川CIMの活用と展望～ Invited Major achievement

大槻順朗

“いい川”づくり研修会・鹿児島2021 2022.1 特定非営利活動法人全国水環境交流会

　More details

Event date： 2022.1

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー
3次元川づくりの幕開け～河川CIMの活用と展望～ Invited

大槻順朗

“いい川”づくり研修会・鹿児島2021 2022.1 特定非営利活動法人全国水環境交流会

　More details

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー
甲府盆地における洪水対策かさ上げ地盤の効果を中心に Major achievement

大槻順朗

防災シンポジウム「水害に強い甲府盆地」 2022.1 山梨大学地域防災・マネジメント研究センター

　More details

Event date： 2022.1

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー
甲府盆地における洪水対策かさ上げ地盤の効果を中心に

大槻順朗

防災シンポジウム「水害に強い甲府盆地」 2022.1 山梨大学地域防災・マネジメント研究センター

　More details

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー
3次元川づくりの幕開け　～河川CIMの活用と展望～ Invited Major achievement

大槻順朗

令和３年度全国多自然川づくり会議 2021.12 国土交通省

　More details

Event date： 2021.12

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：ウェビナー
3次元川づくりの幕開け～河川CIMの活用と展望～ Invited

大槻順朗

令和３年度全国多自然川づくり会議 2021.12 国土交通省

　More details

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：ウェビナー
黄瀬川（狩野川水系）における被災について Major achievement

大槻順朗

第66回水工学講演会ランチョンセミナー（災害） 2021.12 土木学会

　More details

Event date： 2021.12

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー
黄瀬川（狩野川水系）における被災について

大槻順朗

第66回水工学講演会ランチョンセミナー（災害） 2021.12 土木学会

　More details

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー
扇状地氾濫原甲府盆地での減災とグリーンインフラの試み Invited Major achievement

大槻順朗

応用生態工学会第19回北信越現地ワークショップin富山急流河川での河道内氾濫原の保全と再生を考える～日本屈指の急流河川をフィールドとして～ 2021.11 応用生態工学会

　More details

Event date： 2021.11

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：富山県立大学（富山）
扇状地氾濫原甲府盆地での減災とグリーンインフラの試み Invited

大槻順朗

応用生態工学会第19回北信越現地ワークショップin富山急流河川での河道内氾濫原の保全と再生を考える～日本屈指の急流河川をフィールドとして～ 2021.11 応用生態工学会

　More details

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：富山県立大学（富山）
風水害の減災 Major achievement

大槻順朗

令和３年度「甲斐の国・防災リーダー」養成講座 2021.10 山梨県

　More details

Event date： 2021.10

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：山梨県防災学校（山梨）
風水害の減災

大槻順朗

令和３年度「甲斐の国・防災リーダー」養成講座 2021.10 山梨県

　More details

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：山梨県防災学校（山梨）
谷津景観における農地整備に伴う排水路整備による洪水流への影響の評価 Major achievement

大槻順朗，西廣淳，加藤大輝

応用生態工学会第24回全国大会 2021.9 応用生態工学会

　More details

Event date： 2021.9

Language：Japanese Presentation type：Oral presentation(general)

Venue：ウェビナー
谷津景観における農地整備に伴う排水路整備による洪水流への影響の評価

大槻順朗, 西廣淳, 加藤大輝

応用生態工学会第24回全国大会 2021.9 応用生態工学会

　More details

Language：Japanese Presentation type：Oral presentation(general)

Venue：ウェビナー
水害防備林の機能と保全 Major achievement

大槻順朗

応用生態工学会第24回全国大会自由集会「2019台風19号災害に対する応用生態工学会災害調査団報告」 2021.9 応用生態工学会

　More details

Event date： 2021.9

Language：Japanese Presentation type：Oral presentation(general)

Venue：ウェビナー
水害防備林の機能と保全

大槻順朗

応用生態工学会第24回全国大会自由集会「2019台風19号災害に対する応用生態工学会災害調査団報告」 2021.9 応用生態工学会

　More details

Language：Japanese Presentation type：Oral presentation(general)

Venue：ウェビナー
Evaluation of the impact of drainage channel improvement associated with agricultural land development on flood flow in the small valley wetland (Yatsu) landscape. International conference Major achievement

Kazuaki OHTSUKI, Jun NISHIHIRO, Hiroki KATO and Keigo NAKAMURA

The Partnership for Environment and Disaster Risk Reduction Cross-Regional Symposium (2021) 2021.9

　More details

Event date： 2021.9

Language：English Presentation type：Poster presentation
Evaluation of the impact of drainage channel improvement associated with agricultural land development on flood flow in the small valley wetland (Yatsu) landscape. International conference

Kazuaki OHTSUKI, Jun NISHIHIRO, Hiroki KATO, Keigo NAKAMURA

The Partnership for Environment and Disaster Risk Reduction Cross-Regional Symposium (2021) 2021.9 Partnership for Environment and Disaster Risk Reduction (PEDRR)

　More details

Language：English Presentation type：Poster presentation

Venue：ウェビナー
谷津景観の保全活用と治水・環境 Invited Major achievement

大槻順朗

気候変動時代の自然環境保全と水防災 2021.1 環境研究総合推進費2-2002「気候変動に対応した持続的な流域生態系管理に関する研究」プロジェクト

　More details

Event date： 2021.1

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：ウェビナー
谷津景観の保全活用と治水・環境 Invited

大槻順朗

気候変動時代の自然環境保全と水防災 2021.1 環境研究総合推進費2-2002「気候変動に対応した持続的な流域生態系管理に関する研究」プロジェクト

　More details

Language：Japanese Presentation type：Symposium workshop panel(nominated)

Venue：ウェビナー
河川CIMによる3次元川づくりの幕開け Invited

CADはもういらない！？～河川CIMの最新技術セミナー～ 2020.12 土木研究所　自然共生研究センター

　More details

Event date： 2020.12

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー

河川CIM標準化検討小委員会では、川づくりの高度化に向けて河川CIM標準化に向けた検討を実施しています。3次元データを活用することで、調査・設計・施工・管理までのデータサイクルを構築することが可能となります。設計においては、主にCADが用いられてきましたが、3次元地形や河川CIMの特徴を活かした新しい設計法の試みがはじまっています。
本セミナーでは、実務における河川CIMの先進事例、河川空間のデザインを可能とするゲームエンジンによる3次元設計手法をご紹介します。リアルタイムで、設計・解析・合意形成を図るプロセスを目指して、劇的に変化しつつある河川設計技術の世界をお楽しみください。また、河川CIMを河川管理に応用した先進事例として3次元管内図等もご紹介します。
河川CIMによる3次元川づくりの幕開け Invited

CADはもういらない！？～河川CIMの最新技術セミナー～ 2020.12 土木研究所自然共生研究センター

　More details

Language：Japanese Presentation type：Public discourse, seminar, tutorial, course, lecture and others

Venue：ウェビナー

河川CIM標準化検討小委員会では、川づくりの高度化に向けて河川CIM標準化に向けた検討を実施しています。3次元データを活用することで、調査・設計・施工・管理までのデータサイクルを構築することが可能となります。設計においては、主にCADが用いられてきましたが、3次元地形や河川CIMの特徴を活かした新しい設計法の試みがはじまっています。
本セミナーでは、実務における河川CIMの先進事例、河川空間のデザインを可能とするゲームエンジンによる3次元設計手法をご紹介します。リアルタイムで、設計・解析・合意形成を図るプロセスを目指して、劇的に変化しつつある河川設計技術の世界をお楽しみください。また、河川CIMを河川管理に応用した先進事例として3次元管内図等もご紹介します。
Influences of river channel planar shapes on characteristics of fish habitat in small-middle sized streams International conference

22nd 22nd Congress of the International Association for Hydro-Environment Engineering and Research -Asia and Pacific Division (IAHR-APD) 2020.9 IAHR

　More details

Event date： 2020.9

Language：English Presentation type：Poster presentation

Venue：Sapporo, Japan
Influences of river channel planar shapes on characteristics of fish habitat in small-middle sized streams International conference

Ohtsuki, K. Mori T, Nakamura K, Kayaba Y

22nd 22nd Congress of the International Association for Hydro-Environment Engineering and Research -Asia and Pacific Division (IAHR-APD) 2020.9 IAHR

　More details

Language：English Presentation type：Poster presentation

Venue：Sapporo, Japan
放棄水田の持つポテンシャル:湿地植生と生態系機能の観点からの評価

加藤大輝,高津文人,大槻順朗,西廣淳

日本生態学会大会講演要旨(Web) 2020.3

　More details

Event date： 2020.3

Language：Japanese Presentation type：Oral presentation(general)
放棄水田の持つポテンシャル:湿地植生と生態系機能の観点からの評価

加藤大輝, 高津文人, 大槻順朗, 西廣淳

日本生態学会大会講演要旨(Web) 2020.3

　More details

Language：Japanese Presentation type：Oral presentation(general)

▼display all

Teaching Experience (On-campus)

Disaster Management and Engineering

2023Year
Field Practice of Surveying I

2023Year
Field Practice of Surveying II

2023Year

Guidance results

2023

Type：Undergraduate （Major A course）graduation thesis guidance

Number of people receiving guidance ：3people

Graduation / pass / number of people awarded degrees ：3people

Number of teachers：1people
2022

Type：Undergraduate （Major A course）graduation thesis guidance

Number of people receiving guidance ：3people
2022

Type：Master's （Major B course）dissertations guidance

Number of people receiving guidance ：1people
2021

Type：Undergraduate （Major A course）graduation thesis guidance

Number of people receiving guidance ：1people
2020

Type：Undergraduate （Major A course）graduation thesis guidance Period：12months

Number of people receiving guidance ：1people

Review of master's and doctoral thesis

2023

Examiner classification：Second reader

Master ：1people
2022

Examiner classification：Chief examiner

Master ：1people
2022

Examiner classification：Second reader

Master ：1people
2021

Examiner classification：Second reader

Master ：2people (Overseas student)：1people

Performance of external announcement guidance

2022

Japanese papers guidance - Oral presentation - Number of students：4people

English papers guidance - Oral presentation - Number of students：1people

Social Activities

エフエム防災特別番組「水害から命を守る！～身の回りのリスクを知ろう～」

Role(s)： Appearance,　Commentator

2022.9

　More details

Audience： General

Type：TV or radio program

Professional Memberships

応用生態工学会

2007.7
土木学会

2005.3

Committee Memberships

環境省環境省　令和5年度　良好な水循環・水環境創出活動推進事業検討等業務「環境省Water Project」アドバイザリーボード

2023.5 - 2024.3

　 More details

Committee type：Government (national level)
国土交通省関東地方整備局富士川維持流量検討会

2022.10 - 2023.3
土木学会土木学会社会支援部門代表幹事

2022.5
甲斐市ハザードマップ検討委員会

2021.10 - 2022.3

　 More details

Committee type：Autonomy
（公社）土木学会水工学委員会　令和3年7月静岡県東部豪雨災害調査団

2021.7 - 2022.3
（公社）土木学会調査研究部門水工学委員会水害対策検討小委員会幹事長

2021.6

　 More details

Committee type：Society
（公社）土木学会調査研究部門水工学委員会水害対策検討小委員会幹事

2021.6 - 2022.6

　 More details

Committee type：Society
国土交通省関東地方整備局関東地方河川技術懇談会

2021.4 - 2024.3
国土交通省関東地方整備局河川水辺の国勢調査アドバイザー

2021.4 - 2024.3
（公社）土木学会コミュニケーション部門土木広報センター土木コレクショングループ

2020.4 - 2022.3

　 More details

Committee type：Society
（一財）日本建設情報総合センター（JACIC）社会基盤情報標準化委員会／河川ＣＩＭ標準化検討小委員会

2019.10 - 2022.5

　 More details

Committee type：Society
（公社）土木学会調査研究部門水工学委員会水工学論文編集小委員会

2019.6

　 More details

Committee type：Society
（公財）リバーフロント研究所多自然川づくり技術検討会

2019.6

　 More details

Committee type：Society
（公財）リバーフロント研究所新技術活用ワーキング

2019.6 - 2022.3

　 More details

Committee type：Society
（公社）土木学会コミュニケーション部門土木広報センター市民交流グループ土木の日実行グループ

2019.6 - 2022.3

　 More details

Committee type：Society
（公社）土木学会コミュニケーション部門土木広報センター市民交流グループ土木の日実行グループ

2019.6 - 2022.3

　 More details

Committee type：Society
（公社）土木学会調査研究部門水工学委員会水工学委員会　オンラインWG

2019.6 - 2021.3

　 More details

Committee type：Society
（公社）土木学会調査研究部門水工学委員会水工学委員会オンラインWG

2019.6 - 2021.3

　 More details

Committee type：Society
（公社）土木学会調査研究部門水工学委員会水工学論文編集小委員会

2019.6

　 More details

Committee type：Society

▼display all

Media Coverage

エフエム防災特別番組「水害から命を守る！～身の回りのリスクを知ろう～」 TV or radio program

2022.9