Articles | Volume 18, issue 7
https://doi.org/10.5194/nhess-18-1905-2018
https://doi.org/10.5194/nhess-18-1905-2018
Review article
 | 
10 Jul 2018
Review article |  | 10 Jul 2018

Review article: Detection of inundation areas due to the 2015 Kanto and Tohoku torrential rain in Japan based on multi-temporal ALOS-2 imagery

Wen Liu and Fumio Yamazaki

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Short summary
Five synthetic aperture radar images are employed to monitor the changes in the inundation areas caused by torrential rain from 9 to 11 September 2015, in the city of Joso, Ibaraki Prefecture, Japan. The inundation areas were then extracted by setting threshold values for backscattering intensity. The results were modified by considering the land cover and a digital elevation model. Compared with the results from visual inspections, 85 % of the inundation area could be extracted successfully.
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