Flood Waters in Batticaloa District, Sri Lanka
Thu, 24 Dec 2009 13:35:18 GMT International Charter Space and Major DisastersProduct ID: 1405 - English Published: 24 Dec, 2009 GLIDE: FF-2009-000260-LKA FootPrint (Lat x Long, WSG84 Geographic, decimal degrees) TopLeft: 8.041693 x 81.137776 BottomRight: 7.173859 x 81.986218 |  |
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This map illustrates satellite-detected areas of likely standing flood waters and flood-affected land / saturated soils among the affected towns and villages of Batticaloa District, based on change detection analysis with ENVISAT ASAR IMP radar data recorded 14 December and 9 March 2009. Because the input radar scenes were acquired with VV polarization, there is an associated higher level of uncertainty regarding the accuracy and completeness of water detection. It is possible that water levels have been underestimated in heavily vegetated areas and within urban environments. This flood assessment is a preliminary analysis & has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT. Map scale for A3: 1:240,000; Projection: SL grid 99; Datum: Kandawala. | |
| Satellite Data: ASAR IMP
Resolution: 25m Polarization: VV Source: ESA 2009 Radar Dates: 14 Dec. & 9 March 2009 Elevation Data: SRTM / Aster GDEM Source: METI & NASA 2009 GIS Data: OCHA & DRM Other Data: USGS, NGA, WDPA Flood Analysis: UNITAR / UNOSAT Map Production: UNITAR / UNOSAT | |
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