Methods of flooding waters mapping using ERS-1 SAR images: the case study of Camargue area (France)

Cherif Chalah; Tesfaye Korme; Jean Chorowcz; Catherine Mering; Jean-Paul Rudant

doi:10.1117/12.227181

24 November 1995 Methods of flooding waters mapping using ERS-1 SAR images: the case study of Camargue area (France)

Cherif Chalah, Tesfaye Korme, Jean Chorowcz, Catherine Mering, Jean-Paul Rudant

Proceedings Volume 2585, Remote Sensing for Agriculture, Forestry, and Natural Resources; (1995) https://doi.org/10.1117/12.227181
Event: Satellite Remote Sensing II, 1995, Paris, France

Abstract

Two ERS-1 SAR images of different dates were chosen to map flooding waters in the Camargue area of France. Comparative interpretation of the images is done principally by taking into account the nature of interaction between radar waves and water dipoles in the flooding waters, and its effect on the magnitude of retrodiffusion. Zones of low radiometric value are outlined on the image taken during the inundation period. In order to avoid artefacts and surfaces which are not covered by flooding waters, we took a systematically defined narrow radiometric interval that comprises inundated surfaces, and then we applied filters. Logical difference between the two superimposed scenes gave only the surfaces covered by flooding waters. As a result, flooding waters were mapped between Gimeaux and St. Gills, and around Lakes of Vaccares, and we put up a method of cartography of inundated zones from multidate ERS-1 SAR images on a flat area close to a sea. However, minor confusions due to muddy lakes and sediment saturated permanent water bodies remain possible.

Citation Download Citation

Cherif Chalah, Tesfaye Korme, Jean Chorowcz, Catherine Mering, and Jean-Paul Rudant "Methods of flooding waters mapping using ERS-1 SAR images: the case study of Camargue area (France)", Proc. SPIE 2585, Remote Sensing for Agriculture, Forestry, and Natural Resources, (24 November 1995); https://doi.org/10.1117/12.227181

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