Seabed environment damage of matsushima bay (Miyagi Prefecture, Japan) after the 2011 tohoku earthquake and tsunami

Masayuki Nagao, Osamu Nishimura, Kiyokazu Nishimura, Hisao Sasaki, Nobuo Chiba, Atsushi Suzuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A survey was conducted to identify the actual changes of the seabed environment of Matsushima Bay after the 2011 Tohoku earthquake and tsunami using compact side-scan sonar. Three different seabed topographies were surveyed: a submerged breakwater, an eelgrass bed around oyster farms, and the Sabusawa Suido channel in the Urato Islands. The results indicated that soil was deposited only upstream of the breakwater and that the longitudinal stone masonry of the submerged breakwater meandered. The eelgrass was completely washed away from its bed. Additionally, there existed a spindle-shaped trench in the Sabusawa Suido channel.

Original languageEnglish
Title of host publicationProceedings of the 22nd (2012) International Offshore and Polar Engineering Conference
Pages42-48
Number of pages7
Publication statusPublished - 2012 Sep 17
Event22nd International Offshore and Polar Engineering Conference, ISOPE-2012 - Rhodes, Greece
Duration: 2012 Jun 172012 Jun 22

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other22nd International Offshore and Polar Engineering Conference, ISOPE-2012
CountryGreece
CityRhodes
Period12/6/1712/6/22

Keywords

  • 2011 Tohoku Earthquake and Tsunami
  • Eelgrass bed
  • Matsushima Bay
  • Oyster farm
  • Seabed environment
  • Side-scan sonar
  • Submerged breakwater

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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