Numerical study on tsunami propagation into a river

Yasuhisa Aoyama, Mohammad Bagus Adityawan, Wahyu Widiyanto, Yuta Mitobe, Daisuke Komori, Hitoshi Tanaka

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

The Tohoku Earthquake and Tsunami in 2011 caused serious damage not only to coastal structures, but also to riverine infrastructure due to long distance of wave propagation into rivers located on the coast facing the Pacific Ocean. Although there have been numerous investigations on tsunami, limited number of studies have been made for tsunami propagation into a river channel. This study investigates tsunami propagation into a river numerically by comparing with laboratory experiment data. The present numerical simulation is based on shallow water equations, which are solved with the MacCormack scheme. Difference between calculated and experimental results are evaluated in terms of root mean square error. It is concluded that the present numerical simulation yields good agreement with experimental data in a wave flume. In addition it is observed that geographical characteristics in the river channel, such as sandbars and estuarine sand spits, highly affect tsunami propagation process in a river, causing lowering water level along with late arrival of tsunami peak.

Original languageEnglish
Pages (from-to)1017-1021
Number of pages5
JournalJournal of Coastal Research
Volume1
Issue number75
DOIs
Publication statusPublished - 2016 Mar 1
Event14th International Coastal Symposium, ICS 2016 - Sydney, Australia
Duration: 2016 Mar 62016 Mar 11

Keywords

  • Numerical simulation
  • Shallow water equation
  • The 2011 Tohoku Earthquake Tsunami
  • Tsunami propagation into a river

ASJC Scopus subject areas

  • Ecology
  • Water Science and Technology
  • Earth-Surface Processes

Fingerprint

Dive into the research topics of 'Numerical study on tsunami propagation into a river'. Together they form a unique fingerprint.

Cite this