TSUNAMI RISK ASSESSMENT OF NIIGATA CITY ACCOUNTING FOR SOIL LIQUEFACTION AND SNOW MELT

Shinji Sato; Takahito Ando; Yusuke Yamanaka

doi:10.9753/icce.v36v.currents.28

No. 36v (2020), Swash, Nearshore Currents, and Long Waves

No. 36v (2020)

TSUNAMI RISK ASSESSMENT OF NIIGATA CITY ACCOUNTING FOR SOIL LIQUEFACTION AND SNOW MELT

Swash, Nearshore Currents, and Long Waves

https://doi.org/10.9753/icce.v36v.currents.28

Published 2020-12-28

Shinji Sato
Takahito Ando
Yusuke Yamanaka

Shinji Sato

Takahito Ando

Yusuke Yamanaka

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How to Cite

Sato, S., Ando, T., & Yamanaka, Y. (2020). TSUNAMI RISK ASSESSMENT OF NIIGATA CITY ACCOUNTING FOR SOIL LIQUEFACTION AND SNOW MELT. Coastal Engineering Proceedings, (36v), currents.28. https://doi.org/10.9753/icce.v36v.currents.28

Abstract

Tsunami risk assessment was conducted for Niigata City, one of the largest cities facing Japan Sea. Niigata City is known as historical port town developed on a low land formed as the delta by the Shinano River and the Agano River. The city is therefore vulnerable for soil liquefaction. In 1964, the city was devastated by a large earthquake in which soil liquefaction and tsunami worsened the damage. In addition, because of the heavy snowfall in winter, like many coastal cities on the Japan Sea side, the water level rise in the Shinano River in the snow-melt season appears to increase the flooding risk of the harbor area. The harbor is protected by a 4 km long breakwater. This study aims to investigate the tsunami risk of the Niigata City considering the collapse of the infrastructures, the soil liquefaction and the tsunami invasion to rivers in the snow-melt period.

Recorded Presentation from the vICCE (YouTube Link): https://www.youtube.com/watch?v=hiBabxOE1Nc

https://doi.org/10.9753/icce.v36v.currents.28

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TSUNAMI RISK ASSESSMENT OF NIIGATA CITY ACCOUNTING FOR SOIL LIQUEFACTION AND SNOW MELT

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