Analysis of shoreline behavior on sendai coast before and after the 2011 Tsunami

Hoang Cong Vo, Yuta Mitobe, Hitoshi Tanaka

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

Abstract

The earthquake and tsunami in 2011 caused serious damages on Sendai Coast, Miyagi Prefecture, Japan. Shoreline change characteristics for periods both before and after the tsunami are extracted from processing of aerial photographs together with conducting of Empirical Orthogonal Function (EOF) analysis. The evolution of shoreline at the Nanakita River mouth and the Natori River mouth areas both before and after the tsunami has been discussed. Shoreline change rates at both the river mouths reveal the recovery of morphology but in different aspect, the fast recovery at the Nanakita River mouth while very slow recovery at the Natori River mouth. The results of EOF analysis show that the dominant components of shoreline changes before and after the tsunami are different each other. The dominant component after the tsunami at the two river mouths is also different. The total contribution of the first and the second component is very high in the total contribution of all the components. The contribution of the first component after the tsunami is larger than the first component before the tsunami. The results also show the significant effect of the river mouth on the recovery of the morphology around.

Original languageEnglish
Title of host publicationProceedings of the Coastal Engineering Conference
PublisherAmerican Society of Civil Engineers (ASCE)
Volume2014-January
ISBN (Print)9780989661126
Publication statusPublished - 2014
Event34th International Conference on Coastal Engineering, ICCE 2014 - Seoul, Korea, Republic of
Duration: 2014 Jun 152014 Jun 20

Other

Other34th International Conference on Coastal Engineering, ICCE 2014
CountryKorea, Republic of
CitySeoul
Period14/6/1514/6/20

Keywords

  • EOF analysis
  • Recovery
  • Shoreline change
  • Tsunami

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

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  • Cite this

    Vo, H. C., Mitobe, Y., & Tanaka, H. (2014). Analysis of shoreline behavior on sendai coast before and after the 2011 Tsunami. In Proceedings of the Coastal Engineering Conference (Vol. 2014-January). American Society of Civil Engineers (ASCE).