Journal of Disaster Research
Online ISSN : 1883-8030
Print ISSN : 1881-2473
ISSN-L : 1881-2473
Special Issue on Disaster and Big Data
Monitoring of the Recovery Process of the Fukushima Daiichi Nuclear Power Plant from VHR SAR Images
Wen LiuFumio YamazakiTadashi Sasagawa
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ジャーナル オープンアクセス

2016 年 11 巻 2 号 p. 236-245

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The Mw9.0 earthquake hitting the Tohoku area on Japan’s Pacific coast on March 11, 2011, triggered huge tsunamis and a Fukushima Daiichi nuclear power plant breakdown. Due to high radiation levels, plant damage could only be assessed from satellite images. Our study involves four very-high-resolution (VHR) TerraSAR-X/TanDEX-X SAR intensity images taken under different acquisition conditions and used to try and determine reactor building damage. Layover and radar shadow areas were specified first based on building footprint and height, then backscattering patterns in these areas were modeled by introducing sectional views of the target building. Criteria for detecting damage from individual SAR scenes were used to compare simulated backscattering patterns to actual SAR intensity images. Damage to other reactor buildings was then identified based on these criteria. Results were confirmed by comparisons to two optical VHR WorldView-2 images and ground photos.

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© 2016 Fuji Technology Press Ltd.

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