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  1. 防災科研関係論文

Detection of landslides due to the 2013 Thypoon Wipha from high-resolution airborne SAR images

https://nied-repo.bosai.go.jp/records/2947
https://nied-repo.bosai.go.jp/records/2947
d7cd8203-2d6d-4915-9645-b75d84299b28
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Detection of landslides due to the 2013 Thypoon Wipha from high-resolution airborne SAR images
著者 Wen Liu

× Wen Liu

en Wen Liu

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Fumio Yamazaki

× Fumio Yamazaki

en Fumio Yamazaki

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抄録
内容記述タイプ Other
内容記述 c 2015 IEEE. A strong typhoon hit the Pacific coast of Japan from the night of October 15th to the morning of 16th, 2013, and caused huge damages, especially in Izu-Oshima island, Tokyo. Synthetic aperture radar (SAR), which can observe the earth surface despite of weather conditions, is an effective tool to grasp damage situation caused by typhoons. In this study, pre-event Pi-SAR-L and post-event Pi-SAR-L2 airborne radar images with full polarizations were used to detect landsides and debris flows in Izu-Oshima. First, the extraction of potential landslide areas was carried out using only the post-event image by land-cover classification and from the standardized difference polarization index (NDPI). Then the difference of backscattering intensity between the pre- and post-event SAR images was calculated to extract potential landslides. In addition, a 5-m resolution digital elevation model (DEM) was introduced to remove errors. Finally, the results were verified through the comparison with the result from visual interpretation.
言語 en
書誌情報 en : International Geoscience and Remote Sensing Symposium (IGARSS)

巻 2015-November, p. 4244-4247, 発行日 2015-11-10
DOI
関連識別子 10.1109/IGARSS.2015.7326763
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