Tsunami Inundation Modeling

Oral

1343 - Hight-Resolution Tsunami-Bedload Coupled Computation In Amr Environment

Presenting Author(s)

• YW

  Yasunori Watanabe, PhD

  Associate Professor
  Hokkaido University

Additional Author #1(s)

• YM

  Yuta Mitobe, PhD

  Lecturer
  Tohoku Gakuin University

Additional Author #2(s)

• HT

  Hitoshi Tanaka

  Professor
  Tohoku University

Additional Author #3(s)

• KW

  Kazuya Watanabe

This study proposes the novel semi-Lagrangian computational model for computing comprehensive tsunami run-up process, fully coupled with bedload sediment transport computation, on high resolution elevation data under Adaptive-Mesh-Refinement environment. The contributions of the computed local land erosion to the Kitakami River flood owing to the 2011 Tohoku tsunami are discussed in this study. We find the current model has advantages to precisely compute divergence of the bedload flux, resulting from local gradients of the bottom shear, which provides reasonable estimates of the local deposition and erosion during the tsunami flood.