Water | |
Synergistic Approach of Remote Sensing and GIS Techniques for Flash-Flood Monitoring and Damage Assessment in Thessaly Plain Area, Greece | |
Emmanouil Psomiadis1  Melpomeni Zoka1  KonstantinosX. Soulis1  Nicholas Dercas1  | |
[1] Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos st., Athens 11855, Greece; | |
关键词: Landsat 7; Sentinel-2; Sentinel-1; GIS modeling; DEM; water indices; flash-flood mapping; damage evaluation; | |
DOI : 10.3390/w11030448 | |
来源: DOAJ |
【 摘 要 】
This paper describes the synergetic use of earth observation satellites optical and radar data with a high-resolution digital elevation model (DEM) to detect flooded areas and explore the impacts of a flood event. A flash flood episode took place in May 2016, in the central-eastern part of West Thessaly (Central Greece). Landsat-7 ETM+ and a Sentinel-1 SAR images were acquired. For Landsat-7, several water indices were applied and for the Sentinel-1 a threshold method was implemented. Elevation data were also used to improve the delineation of the inundated areas, and to estimate flood water depth. Furthermore, Sentinel-2 images were utilized so as to record the land use/cover of the flooded area. The inundated areas and the affected cultivations were delineated with high precision, and the financial effects were evaluated.
【 授权许可】
Unknown