STUDY ON ESTIMATION METHOD OF INUNDATION AREA AND DEPTH USING SAR DATA

Abstract

 In July 2018, the heavy rainfall in western Japan caused massive damage to Mabi-cho, Kurashiki, Okayama Prefecture. A large area was flooded within a short time after the onset of dredging. While there is concern about the intensification of heavy rainfall disasters, it is required to quickly grasp the inundation situation. This is expected to use earth observation satellites equipped with Synthetic Aperture Radar (SAR), and the implementation of the emergency observation immediately after the disaster and the development of base-map are in progress. In this research, we propose a method to estimate the inundation depth easily by extracting the flood zone automatically using SAR satellite data of emergency observation and base-map data of the same season in the near past.