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  1. 防災科研関係論文

Extraction of landslides in the 2016 Kumamoto earthquake using multi-temporal Lidar data

https://nied-repo.bosai.go.jp/records/4823
https://nied-repo.bosai.go.jp/records/4823
35a03f2a-a84b-40ed-beed-2a5d96104fcf
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Extraction of landslides in the 2016 Kumamoto earthquake using multi-temporal Lidar data
言語
言語 eng
著者 Fumio Yamazaki

× Fumio Yamazaki

en Fumio Yamazaki

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Yuuki Sagawa

× Yuuki Sagawa

en Yuuki Sagawa

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Wen Liu

× Wen Liu

en Wen Liu

Search repository
抄録
内容記述タイプ Other
内容記述 Extraction of landslides from a pair of Lidar data taken before and after the 2016 Kumamoto, Japan, earthquake was carried out. The spatial correlation coefficient of the two Lidar data was calculated, and the horizontal shift of the April-23 DSM with the maximum correlation coefficient was considered as the crustal movement by the April-16 main-shock. By taking the difference of the co-registered DSMs, the change of the surface elevation was calculated. This elevation change includes many effects due to the earthquake, such as landslides and building collapses, and the other temporal changes, such as parking cars and construction/rescue activities. Thus in this study, only large-scale elevation changes more than plus and minus 2.0 m and the areas of larger than 200 square meters were extracted as possible landslides. The extracted areas were compared with aerial photos taken after the Kumamoto earthquake and other soil movement maps made for this event. The result shows that large-scale landslides were easily extracted by the difference of the DSMs and even ground deformations along surface ruptures, where trees were torn down, could be identified.t
言語 en
書誌情報 en : EARTH RESOURCES AND ENVIRONMENTAL REMOTE SENSING/GIS APPLICATIONS IX

巻 10790, 発行日 2018
出版者
言語 en
出版者 SPIE-INT SOC OPTICAL ENGINEERING
ISSN
収録物識別子タイプ EISSN
収録物識別子 1996-756X
DOI
関連識別子 10.1117/12.2325091
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