第16回流砂・河床変動に関する若手研究会(2026 Taiwan-Japan Joint Symposium on River Hydraulics and Sediment Transport) を行いました．
日時：2026年8月31日，9月1日
場所：北海道釧路市観光国際交流センター
参加者：34名
昨年3月に本勉強会を台湾で行った際にもてなしていただいたので，今回はそのお返しの意味も込めて釧路で台湾の皆さんと勉強会を行いました．
初日の8月31日は以下のプログラムで口頭発表・ポスター発表が行われました．
Oral Presentation
1. Keynote Speech：Professor Emeritus Shimizu, Yasuyuki（60 min）
Changing the Rules of River Simulation: The Next Generation Powered by iRIC Featuring Cabernet2D and Freebird
2. Professor Lai, Yueh-Jen（30 min）
Recovery Time of Braided Rivers After Tributary-Fan Intrusion: Physical Experiments and Numerical Modeling
3. Associate Professor Iwasaki, Toshiki（30 min）
Numerical Modeling of Reach-scale Morphodynamics in Gravel-bed Rivers: Validation and Application
4. Associate Professor Hung, Chi-Yao（30 min）
UAV-based DEM Reconstruction and 3D Surface Velocity Tracking in Seepage-Induced Landslide Dam Failure Experiments
5. Professor Naruse, Hajime（45 min）
Surrogate-Assisted Bayesian Inversion of Past Morphodynamic Processes from Topography and Geologic Records: Applications to Turbidity Currents and Tsunamis
6. Associate Professor Chao, Wei-An（30 min）
Seismic Modeling of Bedload Transport in an Artificial Channel
7. Mr. Inami, Yu（30 min）
Experiments on the Stability of River Blocks under Triangular-Shaped Water Surface Waves and Numerical Simulation of the Flow Structure around Antidunes
8. Dr. Lin, Chun-En（30 min）
Residual Slope Investigation Results and the Impact of Unstable Sediment Transport
Poster Presentation
1. Yu-Shiu Chen（DPRC, National Cheng Kung University）
Riverbed Processes Resulting from the Large-Scale Landslide and Associated Landslide Dam
2. S. Y. J. Lai and S. Y. J. Huang（National Chung Hsin University）
Morphodynamic experiments of fan-deltas under intermittent density inflows
3. Yi-Chu Su（DPRC, National Cheng Kung University）
Sediment Dynamics Following Nature-based Solutions: A Case Study of the Lijia River, Eastern Taiwan
4. Chi-Hsi Chen, Pascale Aussillous, Chi-Yao Hung（National Chung Hsin University）
Visualizing Internal Dynamics in Irregular Granular Flows Using Refractive Index Matching and Active Contour Analysis
5. Chun-En LIN, Chen-Yu Chen（Agency of Rural Development and Soil and Water Conservation, MOA）
Train Derailment Event Induced by Debris Flow in Hualien, Taiwan
6. Chun-En LIN, Wei-Cheng Zheng, Chen-Yu Chen（Agency of Rural Development and Soil and Water Conservation, MOA）
Integration and Application of Multi-Source Spatial Data via BIGGIS Platform
7. Tomoya Iwai（Kyoto University）
Data Assimilation of Sediment Dynamics in a Mountainous Catchment Based on Bedload Observations
8. Tao Yamamoto（Tohoku University）
Encroachment of riparian vegetation in a braided river due to catchment management in the Sagae River, Japan
9. Yuexia Zhou（Nagoya University）
Two-Dimensional Numerical Assessment of Sediment Supply Changes from a Sediment Bypass Tunnel
10. Riho Kido（Hiroshima University）
Prediction of sediment discharge including slope failure in mountain are with physical model and machine learning
11. Hiroshi Cho（Kumamoto University）, Minoru Miyake（Token C.E.E. Consultants Co., Ltd.）
Functional Evolution of the Traditional Spur Dyke “Seigyu” as a Living Hydraulic Structure for Sediment Control in Alluvial Rivers
12. Shinichiro Onda（Kyoto University）
Applications of 3D numerical model in a Generalized Curvilinear Coordinate System to Riverbed Deformation
二日目は釧路湿原の現地見学でした．
地形の変化と人間の経済活動を踏まえて湿原保護がどのように行われてきたのかを教えていただきました．
日本と同様に土砂災害が多い台湾の研究者の皆さんと議論ができる良い機会となりました！
