Numerical simulation of coastal sediment transport by the 2011 Tohoku-oki earthquake Tsunami

Daisuke Sugawara, Tomoyuki Takahashi

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)

Abstract

Erosion and deposition by the 2011 Tohoku-oki tsunami in the coastal areas of the Sendai Plain were numerically investigated using the tsunami sediment transport model (STM). The simulation suggested that much of the sediment deposited on land originated from the beach and dune, whereas the contribution from sea-bottom sediments was quite minor. Erosion observed at the backs of engineering structures such as reinforced concrete (RC) dikes was reproduced well in the simulation. Simulated deposition and erosion inside the nearby coastal forest and farmlands were generally consistent with the observed data. Further investigation of the model parameters and implementation of dynamic change in the roughness coefficient and destruction of the structures are required to simulate detailed local variability of erosion and deposition and of the thin sand layer in the inland areas.

Original languageEnglish
Title of host publicationAdvances in Natural and Technological Hazards Research
PublisherSpringer Netherlands
Pages99-112
Number of pages14
DOIs
Publication statusPublished - 2014 Jan 1

Publication series

NameAdvances in Natural and Technological Hazards Research
Volume35
ISSN (Print)1878-9897
ISSN (Electronic)2213-6959

Keywords

  • Numerical modeling
  • Sediment transport
  • Tsunami deposit

ASJC Scopus subject areas

  • Global and Planetary Change
  • Geography, Planning and Development
  • Economic Geology
  • Computers in Earth Sciences
  • Management, Monitoring, Policy and Law

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