Satellite images and relief delineation following wetland spatial evolution

Abstract

[Notes_IRSTEA]SRef-ID: 1607-7962/gra/EGU04-A-06834 [Departement_IRSTEA]DS [TR1_IRSTEA]METHODO / SYNERGIERemote sensing provide a good opportunity to monitor the rapid Hydro-Geomorphologic units i.e., Wetland and floods. The spatial coverage of these units is related to micro relief of the region. Therefore a good knowledge of micro relief has a prime importance in understanding the land -water interaction in such areas. In present study, the micro relief in Rhone delta river (in South of France) have been derived using fine resolution DEM (Digital Elevation Model) and multi-temporal SPOT data. The DEM (Digital Elevation Model) results showed wetland sites in the region and its spatial relation with terrain. Since the micro relief play important role in spatial coverage of wetland in rapid response to hydrological season. Therefore, this parameter is also derived by extracting the surface area of wetland in various seasons. The comparative analysis show that combination of these two methods can be use efficiently to monitor the wetland dynamics