Flash-Flood Affected Areas in Nguyen Phuc, Bach Thong, Bac Kan Province, Viet Nam
Tue, 21 Jul 2009 12:47:59 GMT| Product ID: 1368 - English Published: 21 Jul, 2009 GLIDE: FL-2009-000124-VNM FootPrint (Lat x Long, WSG84 Geographic, decimal degrees) TopLeft: 22.287179 x 105.901882 BottomRight: 22.231666 x 105.983466 |  |
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This map illustrates satellite-detected areas likely affected by flash flooding in the province of Bac Kan, Viet Nam, as based on change detection methods using Radarsat 2 & 1 data acquired over the area on 11 July 2009 & 19 March 2001. The newly-released ASTER global elevation model (GDEM) was also used in the flooding analysis. Pre-crisis Spot-5 imagery from 11 November 2008 was used for road and main building identification using automated identification methods. This flood assessment is a preliminary analysis & has not yet been validated in the field. Map scale for A3: 1:26,000; Projection : UTM Zone 48 North; Datum : WGS-84 (EGM-96). | |
| Satellite Data (1) : RADARSAT- 1 & 2
Imagery Dates : 11 July 2009 & 19 March 2001 Resolution : 25 m Copyright : RADARSAT-2 © MDA 2009 Credit :Canadian Space Agency Satellite Data (2) : SPOT-5 (2.5m Panshapened) Imagery Date : 11 November 2008 Copyright : SPOT Image 2009 Elevation Data : ASTER GDEM Resolution : 27m Source : METI & NASA 2009 GIS Data : CISIN Other Data : OSM, ESRI, USGS, NGA Roads & Buildings : UNITAR / UNOSAT Flood Analysis : UNITAR / UNOSAT Map Production : UNITAR / UNOSAT | |
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