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  1. 防災科研関係論文

Topographic Evolution Involving Co-Seismic Landslide, Deformation, Long-Term Folding and Isostatic Rebound: A Case Study on the 2004 Chuetsu Earthquake

https://nied-repo.bosai.go.jp/records/5780
https://nied-repo.bosai.go.jp/records/5780
15d2d268-f84c-42ec-b8ce-00a65446f3f4
Item type researchmap(1)
公開日 2023-05-24
タイトル
言語 ja
タイトル Topographic Evolution Involving Co-Seismic Landslide, Deformation, Long-Term Folding and Isostatic Rebound: A Case Study on the 2004 Chuetsu Earthquake
タイトル
言語 en
タイトル Topographic Evolution Involving Co-Seismic Landslide, Deformation, Long-Term Folding and Isostatic Rebound: A Case Study on the 2004 Chuetsu Earthquake
言語
言語 eng
著者 Jinghao Lei

× Jinghao Lei

ja Jinghao Lei

en Jinghao Lei

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Zhikun Ren

× Zhikun Ren

ja Zhikun Ren

en Zhikun Ren

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Takashi Oguchi

× Takashi Oguchi

ja Takashi Oguchi

en Takashi Oguchi

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Peizhen Zhang

× Peizhen Zhang

ja Peizhen Zhang

en Peizhen Zhang

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Shoichiro Uchiyama

× Shoichiro Uchiyama

ja Shoichiro Uchiyama

en Shoichiro Uchiyama

Search repository
抄録
内容記述タイプ Other
内容記述 Co-seismic landslide volume information is critical to understanding the role of strong earthquakes in topographic and geological evolution. The availability of both pre- and post-earthquake high-resolution digital elevation models (DEMs) provides us with the opportunity to develop a new approach to obtain robust landslide volume information. Here, we propose a method for landslide volume estimation and test it in the Chuetsu region, where a Mw 6.6 earthquake occurred in 2004. First, we align the DEMs by reconstructing the horizontal difference. Then, we quantitatively obtain the landslide volume in the epicentral area by differencing the pre- and post-earthquake DEMs. We convert the landslide volume into the distribution of average catchment-scale denudation and the resulting long-term crustal rebound. Our findings reveal that the Chuetsu earthquake mainly roughens the topography in the low-elevation Chuetsu region. Our results indicate that the preserved topography not only is due to the uplift caused by fault-related folding on the hanging wall of the Muikamachi fault but also undergoes erosion caused by seismically induced landslides and crustal rebound also modifies the topography in the long term. This study confirms that the differential DEM method is a valuable approach for quantitative analysis of topographic and geological evolution.
言語 en
書誌情報 en : Remote Sensing

巻 13, 号 6, p. 1073-1073, 発行日 2021-03-11
出版者
言語 en
出版者 MDPI AG
ISSN
収録物識別子タイプ EISSN
収録物識別子 2072-4292
DOI
関連識別子 10.3390/rs13061073
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