Sat, 05:16 22 Nov 2008 GMT17

 

Flood Waters in Sunsari & Saptari Districts, Nepal - (31 Aug 08)
03 Sep 2008
Source: UNOSAT
Reuters and AlertNet are not responsible for the content of this article or for any external internet sites. The views expressed are the author's alone.
This map illustrates satellite detected 
flood waters on 31 August 2008 for the affected Districts of Sunsari & Saptari, Nepal following a retaining wall breach on the Koshi River on 18 August 2008. Flood water detection was made using a 
time series of ENVISAT-ASAR (IMM) radar data recorded on 22 June, 27 July & 31 August 2008. The length of the retaining wall breach was estimated at 1,500 meters from ALOS-PALSAR radar data 
acquired on 24 August 2008. This flood detection is a preliminary analysis & has not yet been validated in the field. Map scale for A3: 1:  ; Projection : UTM, Zone 45 North; Datum : WGS 
1984.<br/>Satellite Data (1) : ENVISAT-ASAR IMM
<br/>Resolution : 150 m
<br/>Date Series : 22 June, 27 July &amp; 31 Aug. 2008
<br/>Copyright :  ESA (2008)
<br/>Satellite Data (2) : ALOS PALSAR
<br/>Resolution : 12.5 m
<br/>Date Series : 24 Aug. 2008
<br/>Copyright : JAXA (2008)
<br/>Flood Analysis : UNOSAT &amp; ESA (FAIRE)
<br/>Other GIS Data : ICIMOD, GIST, USGS, WHO
<br/>Map Production : 
UNOSAT (3 September 2008)
<br/>
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This map illustrates satellite detected flood waters on 31 August 2008 for the affected Districts of Sunsari & Saptari, Nepal following a retaining wall breach on the Koshi River on 18 August 2008. Flood water detection was made using a time series of ENVISAT-ASAR (IMM) radar data recorded on 22 June, 27 July & 31 August 2008. The length of the retaining wall breach was estimated at 1,500 meters from ALOS-PALSAR radar data acquired on 24 August 2008. This flood detection is a preliminary analysis & has not yet been validated in the field. Map scale for A3: 1: ; Projection : UTM, Zone 45 North; Datum : WGS 1984.
Satellite Data (1) : ENVISAT-ASAR IMM
Resolution : 150 m
Date Series : 22 June, 27 July & 31 Aug. 2008
Copyright : ESA (2008)
Satellite Data (2) : ALOS PALSAR
Resolution : 12.5 m
Date Series : 24 Aug. 2008
Copyright : JAXA (2008)
Flood Analysis : UNOSAT & ESA (FAIRE)
Other GIS Data : ICIMOD, GIST, USGS, WHO
Map Production : UNOSAT (3 September 2008)

Source:UNOSAT
Country:Nepal
Link to high-Res:File size: 2.989 MB
Link to mid-Res:File size: 1.667 MB
KML: Link to KML file


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