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ID 47116
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title alternative
Study on Distinctive Landslides Induced by an Earthquake
creator
Tanimoto, Shin
Takada, Kosei
NDC
Earth sciences. Geology
abstract
The Kumamoto earthquake of 2016 triggered numerous landslides. One feature of these landslides was fluidic movement of soil mass, which occurred despite little rain having fallen for a long time before the earthquake. To understand this distinctive phenomenon, we analyzed the seismic and soil characteristics of the area and evaluated their association with landslides. The results showed landslides to be concentrated in areas where seismic acceleration exceeded 800 gal. Through soil tests, we found that a mass of clay with abundant Halloysite easily becomes fluid. Therefore we inferred that some landslides were induced by fluidization of such clay layers.
description
本研究の一部は、国土交通省河川砂防技術開発公募の砂防技術分野(平成29~31年度)「大規模地震とそれに伴う地盤の劣化に起因する連鎖複合型土砂災害の発生機構と対策」(研究代表者:丸谷知己北海道大学大学院特任教授)から支援を受けて行うことができました。
journal title
Bulletin of the Graduate School of Integrated Arts and Sciences, Hiroshima University. II, Studies in environmental sciences
volume
Volume 13
start page
41
end page
52
date of issued
2018-12-31
publisher
広島大学大学院総合科学研究科
issn
1881-7696
ncid
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
rights
掲載された論文,研究ノート,要旨などの出版権・著作権は広島大学大学院総合科学研究科に帰属する。
Copyright (c) 2018 Graduate School of Integrated Arts and Sciences, Hiroshima University, All rights reserved.
department
Graduate School of Integrated Arts and Sciences
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