DETECTION OF INUNDATION AND PRODUCTION OF HIGH-SPATIAL-RESOLUTION SURFACE WATER MAP USING MICROWAVE RADIOMETERS

• SETO Shinta

  長崎大学 大学院工学研究科

Bibliographic Information

Other Title

• マイクロ波放射計を用いた氾濫の検出と高空間解像度の地表水マップの作成

Abstract

 A method to detect inundation by using surface water index (Normalizd Differential Frequency Index = NDFI) for footprint of microwave radiometer is developed. As NDFI involves not only inundation but surface water in river or paddy area, land use map is used for flood detection. This method is successfully applied to detect inundation in Oda river basin and some regions where suffered from H30 July heavy rainfall disaster. But, the method neees further improvement to be applied for urban area and near coastline. Temporal surface water storage after rainfall should be considered. Fraction of surface water at footprint is downscaled to probability of surface water at about 50-m pixel using flood hazard map. This demonstrates the possibility to produce high-spatial-resoultion surface water map.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 75 (2), I_1093-I_1098, 2019

  Japan Society of Civil Engineers

Keywords

• surface water
• microwave radiometer
• inundation
• land use data
• hazard map

Details

• CRID: 1390567901495022208
• NII Article ID: 130007940050
• DOI: 10.2208/jscejhe.75.2_i_1093
• ISSN: 2185467X
• Web Site: https://www.jstage.jst.go.jp/article/jscejhe/75/2/75_I_1093/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed