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Proceedings Paper

Flood mapping of Yialias River catchment area in Cyprus using ALOS PALSAR radar images
Author(s): Dimitrios D. Alexakis; Diofantos G. Hadjimitsis; Athos Agapiou; Kyriacos Themistocleous; Adrianos Retalis; Silas Michaelides; Stelios Pashiardis; F. Tymvios
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Paper Abstract

This study strives to highlight the potential of flood inundation monitoring and mapping in a catchment area in Cyprus (Yialias river) with the use of radar satellite images. Due to the lack of satellite data acquired during dates flood inundation events took place, the research team selected specific images acquired during dates that severe precipitation events were recorded from the rain gauge station network of Cyprus Meteorological Service in the specific study area. The relationship between soil moisture and precipitation was thoroughly studied and linear regression models were developed to predict future flood inundation events. Specifically, the application of fully polarimetric (ALOS PALSAR) and data acquired over different dates for soil moisture mapping is presented. The PALSAR (Phased Array type L-band Synthetic Aperture Radar) sensor carried by the ALOS (Advanced Land Observing Satellite) have quadruple polarizations (HH, VV, HV, VH). The amount of returned radiation (as backscatter echoes) that dictates the brightness of the image depends on factors such as the roughness, size of the target relative to the signal’s wavelength, volumetric and diffused scattering. The variation in soil moisture pattern during different precipitation events is presented through soil moisture maps obtained from ALOS PALSAR and data acquired during different dates with different precipitation rates. Soil moisture variation is clearly seen through soil moisture maps and the developed regression models are used to simulate future inundation events. The results indicated the considerable potential of radar satellite images in soil moisture and flood mapping in catchments areas of Mediterranean region.

Paper Details

Date Published: 19 October 2012
PDF: 9 pages
Proc. SPIE 8531, Remote Sensing for Agriculture, Ecosystems, and Hydrology XIV, 85310S (19 October 2012); doi: 10.1117/12.974581
Show Author Affiliations
Dimitrios D. Alexakis, Cyprus Univ. of Technology (Cyprus)
Diofantos G. Hadjimitsis, Cyprus Univ. of Technology (Cyprus)
Athos Agapiou, Cyprus Univ. of Technology (Cyprus)
Kyriacos Themistocleous, Cyprus Univ. of Technology (Cyprus)
Adrianos Retalis, National Observatory of Athens (Greece)
Silas Michaelides, Meteorological Service of Cyprus (Cyprus)
Stelios Pashiardis, Meteorological Service of Cyprus (Cyprus)
F. Tymvios, Meteorological Service of Cyprus (Cyprus)


Published in SPIE Proceedings Vol. 8531:
Remote Sensing for Agriculture, Ecosystems, and Hydrology XIV
Christopher M. U. Neale; Antonino Maltese, Editor(s)

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