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Evolution of the 2011 Tohoku Earthquake Tsunami on the Pacific Coast of Hokkaido

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Title: Evolution of the 2011 Tohoku Earthquake Tsunami on the Pacific Coast of Hokkaido
Authors: Watanabe, Yasunori Browse this author →KAKEN DB
Mitobe, Yuta Browse this author
Saruwatari, Ayumi Browse this author
Yamada, Tomohito Browse this author →KAKEN DB
Niida, Yasuo Browse this author
Keywords: 2011 Tohoku earthquake tsunami
edge wave
Issue Date: Mar-2012
Publisher: World Scientific Publishing
Journal Title: Coastal Engineering Journal
Volume: 54
Issue: 1
Start Page: 1250002
Publisher DOI: 10.1142/S0578563412500027
Abstract: A numerical computation of the 2011 Tohoku earthquake tsunami was performed to identify fundamental features of the tsunami evolution along the coast of Hokkaido, Japan. Edge waves formed at multiple locations where the refracted tsunami focused, governing local surface oscillations and regional variations in tsunami height along the Pacific coast of Hokkaido. The computation reasonably reproduced the distribution of surveyed tsunami height as well as the time records of surface elevation recorded at ports in Hokkaido. The major features of the frequency spectrum for the 2011 Tohoku tsunami were identical to those for the 2003 Tokachi-oki earthquake tsunami; inherent local properties of surface oscillation caused by the passage of edge waves existed, determined by the local bathymetry.
Rights: Electronic version of an article published as Coastal Engineering Journal, 54(1), 2012, 1250002, 10.1142/S0578563412500027 © copyright World Scientific Publishing Company.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 渡部 靖憲

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