Salinization by a tsunami in a semi-enclosed bay: tsunami-ocean three-dimensional simulation based on a great earthquake scenario along the Nankai Trough

• Nakada Satoshi

  Graduate School of Maritime Sciences, Kobe University

• Hayashi Mitsuru

  Graduate School of Maritime Sciences, Kobe University Research Centre for Inland Seas, Kobe University

• Koshimura Shunichi

  International Research Institute of Disaster Science, Tohoku University

• Taniguchi Yuuki

  Graduate School of Maritime Sciences, Kobe University

• Kobayashi Ei-ichi

  Graduate School of Maritime Sciences, Kobe University

Abstract

This study investigated the influences of a giant tsunami on salinity in coastal waters based on the scenario of the largest potential tsunamigenic earthquake that could occur along the Nankai Trough in the near future, by conducting an ocean-tsunami coupled three-dimensional simulation in Osaka Bay. This realistic simulation using an unstructured-grid model was capable of evaluating the oceanic salinization induced by the tsunami. Simulated results indicated that tsunami intrusion into the bay head increased salinity and it returned to its previous value within 1 week after the earthquake. The salinization, which continues for a few days, may adversely affect the local brackish biota.

Journal

• Journal of Advanced Simulation in Science and Engineering

  Journal of Advanced Simulation in Science and Engineering 3 (2), 206-214, 2016

  Japan Society for Simulation Technology

Keywords

• Tsunamigenic earthquake along the Nankai Trough
• Giant tsunami
• Salinization
• Brackish biota
• Ocean-tsunami coupled three-dimensional simulation
• Finite-Volume Community Ocean Model

Details

• CRID: 1390282680731938816
• NII Article ID: 130005562274
• DOI: 10.15748/jasse.3.206
• ISSN: 21885303
• Web Site: https://www.jstage.jst.go.jp/article/jasse/3/2/3_206/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed