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  1. 防災科研関係論文

Estimation of three-dimensional crustal movements in the 2011 Tohoku-Oki, Japan, earthquake from TerraSAR-X intensity images

https://nied-repo.bosai.go.jp/records/5904
https://nied-repo.bosai.go.jp/records/5904
973ab6c0-51d7-410b-a81e-da6ca7c3bb04
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Estimation of three-dimensional crustal movements in the 2011 Tohoku-Oki, Japan, earthquake from TerraSAR-X intensity images
著者 W. Liu

× W. Liu

en W. Liu

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F. Yamazaki

× F. Yamazaki

en F. Yamazaki

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M. Matsuoka

× M. Matsuoka

en M. Matsuoka

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T. Nonaka

× T. Nonaka

en T. Nonaka

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T. Sasagawa

× T. Sasagawa

en T. Sasagawa

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抄録
内容記述タイプ Other
内容記述 c Author(s) 2015. The Tohoku-Oki earthquake on 11 March 2011 caused significant widespread crustal movements. In a previous study, we proposed a method for capturing two-dimensional (2-D) surface displacements from a pair of pre- and post-event TerraSAR-X (TSX) intensity images. However, it is impossible to detect three-dimensional (3-D) displacements from one pair of TSX images. In this study, three pairs of pre- and post-event TSX images taken on different paths were used to estimate 3-D crustal movements. The relationship between the actual 3-D displacements and the converted 2-D movements in the synthetic-aperture radar (SAR) images was derived based on the observation model of a SAR sensor. The 3-D movements were then calculated from three sets of detected 2-D movements that occurred within a short time period. Compared with GPS observations, the proposed method was found to be capable of detecting the 3-D crustal movements with sub-pixel accuracy.
言語 en
書誌情報 en : Natural Hazards and Earth System Sciences

巻 15, 号 3, p. 637-645, 発行日 2015-03-27
ISSN
収録物識別子タイプ EISSN
収録物識別子 1684-9981
DOI
関連識別子 10.5194/nhess-15-637-2015
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