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The Complementary Use of Optical and SAR Data in Monitoring Flood Events and Their Effects

Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos st., Athina 11855, Greece
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Presented at the 3rd EWaS International Conference on “Insights on the Water-Energy-Food Nexus”, Lefkada Island, Greece, 27–30 June 2018.
Proceedings 2018, 2(11), 644; https://doi.org/10.3390/proceedings2110644
Published: 30 July 2018
This paper describes the synergetic use of earth observation satellites optical and radar data to detect flooded areas and explore the impacts of the flood event. A flash flood episode took place in May 2016, in the central-eastern part of West Thessaly (Central Greece). A Landsat-7 ETM+ and a Sentinel-1 SAR image were acquired. For Landsat-7 several water indices were applied and for the Sentinel-1 a threshold method was implemented. 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.
Keywords: Landsat 7; Sentinel-1; Sentinel-2; water indices; flood mapping; damage evaluation Landsat 7; Sentinel-1; Sentinel-2; water indices; flood mapping; damage evaluation
MDPI and ACS Style

Zoka, M.; Psomiadis, E.; Dercas, N. The Complementary Use of Optical and SAR Data in Monitoring Flood Events and Their Effects. Proceedings 2018, 2, 644.

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