Journal
ARABIAN JOURNAL OF GEOSCIENCES
Volume 11, Issue 8, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s12517-018-3505-7
Keywords
SAR; Flood mapping; Sentinel-1; Polarization; Medjerda basin
Categories
Funding
- National Center of Mapping and Remote Sensing
- Ministry of Higher Education and Scientific Research of Tunisia
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Flood mapping is a powerful asset that allows drawing better strategies to contain possible economic repercussions and to rescue the affected population. This work is directly unfolded after the rainfall events that occurred in the north of the country, in February 2015, during which certain cities located in the vicinity of the Tunisian basin of Medjerda were flooded by the overflow of the Medjerda river, causing important damage to the towns of Jendouba and Bou Salem. The present research illustrates the potentiality of Sentinel-1 sensor in detecting flood areas in the upstream of Medjerda river. The Medjerda is the most important river in Tunisia, with an annual water potential reaching 0.8 billion m(3). We compared the signature of flood water in vertical transmit and horizontal received (VH) and vertical transmit and vertical received (VV) polarizations of radar data. The study proves that the segregation of land/water areas with a threshold technique is better observed in VH polarization rather than VV polarization.
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