Characteristics of landslides caused by the 2018 Hokkaido Eastern Iburi Earthquake

Nobutomo Osanai; Takashi Yamada; Shin-ichiro Hayashi; Shin'ya Kastura; Takahisa Furuichi; Seiji Yanai; Yasuhiro Murakami; Tomoyoshi Miyazaki; Yuichiro Tanioka; Shigetaka Takiguchi; Mayumi Miyazaki

doi:10.1007/s10346-019-01206-7

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Characteristics of landslides caused by the 2018 Hokkaido Eastern Iburi Earthquake

Journal article

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Characteristics of landslides caused by the 2018 Hokkaido Eastern Iburi Earthquake

Nobutomo Osanai, Takashi Yamada, Shin-ichiro Hayashi, Shin'ya Kastura, Takahisa Furuichi, Seiji Yanai, Yasuhiro Murakami, Tomoyoshi Miyazaki, Yuichiro Tanioka, Shigetaka Takiguchi, …

Landslides, Vol.16(8), pp.1517-1528

2019

DOI: https://doi.org/10.1007/s10346-019-01206-7

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Abstract

2018 Hokkaido Eastern Iburi Earthquake

landslide dam

pyroclastic fall deposits

shallow landslide

The 2018 Hokkaido Eastern Iburi Earthquake struck the eastern Iburi region (epicenter: 42.691°N, 142.007°E, depth: 37.0 km) of Hokkaido, Japan, at 3:07.59 JST, September 6, 2018 (18:07.59, September 5, 2018 UTC). Many shallow landslides were triggered by this Mw 6.6 (Mj 6.7) earthquake. The basement complex in the affected area (sedimentary rocks) is covered with thick pyroclastic fall deposits derived from the Tarumae Volcano, etc., and the strong seismic shocks triggered shallow landsliding of them. Shallow landslides moving along valley type topography traveled greater distances than those moving along planar slope topography. Some shallow landslides occurred on relatively gentle slopes (& 30°). The earthquake also induced several large-scale deep-seated landslides, including one that has formed a landslide dam in the Hidaka-horonai River. Landslides were densely distributed over hilly regions (elevation: 200-400 m) within an area of approximately 400 km2 in Atsuma (landslides caused 36 deaths), Abira, and Mukawa, and the number of landslides and the total area of the landslides were the largest in Japan ever since the Meiji Era (1868-1912). The catchments where shallow landslides were concentrated were severely devastated.

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Title: Characteristics of landslides caused by the 2018 Hokkaido Eastern Iburi Earthquake
Authors: Nobutomo Osanai (Author) - Hokkaido University, Japan
Takashi Yamada (Author) - Hokkaido University, Japan
Shin-ichiro Hayashi (Corresponding Author) - Hokkaido University, Japan
Shin'ya Kastura (Author) - Hokkaido University, Japan
Takahisa Furuichi (Author) - University of the Sunshine Coast
Seiji Yanai (Author) - Ishikawa Prefectural University, Japan
Yasuhiro Murakami (Author) - Civil Engineering Research Institute for Cold Region, Japan
Tomoyoshi Miyazaki (Author) - Shin Engineering Consultant, Japan
Yuichiro Tanioka (Author) - Hokkaido University, Japan
Shigetaka Takiguchi (Author) - Ministry of Land, Infrastructure, Transport and Tourism, Japan
Mayumi Miyazaki (Author) - Pasco Corporation, Japan
Publication details: Landslides, Vol.16(8), pp.1517-1528
Publisher: Springer
Date published: 2019
DOI: 10.1007/s10346-019-01206-7
ISSN: 1612-510X; 1612-510X
Organisation Unit: University of the Sunshine Coast, Queensland; Sustainability Research Cluster
Language: English
Record Identifier: 99451507202621
Output Type: Journal article

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