Emergency Analysis 3: Satellite-Based Quantitative Damage Assessment Overview for Bazar-Kurgan, Kyrgyzstan

Sat, 19 Jun 2010 19:53:53 GMT
Product ID: 1456 - English
Published: 19 Jun, 2010
GLIDE: CE-2010-000113-KGZ
FootPrint (Lat x Long, WSG84 Geographic, decimal degrees)
TopLeft: 41.056 x 72.711
BottomRight: 41.009 x 72.778

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This is a quantitative damage summary for the city of Bazar-Kurgan, based on a detailed analysis of crisis satellite imagery acquired on the morning of 18 June 2010. A total of 433 affected buildings were identified within the city of Bazar-Kurgan. Of this total, 401 buildings were totally destroyed and a further 32 buildings were severely damaged. As illustrated in the overview map below, a density analysis of the affected building sites indicated there are two main zones of building damages, located in the center and north-east of the city. Within each zone, there are multiple, smaller clusters of affected buildings. A preliminary assessment of building damage signatures indicates that arson was the probable cause because of the prevalence of destroyed rooftops with visibly intact load-bearing walls, a common signature of fire-related damages; a finding supported by the satellite detection of two active fire zones within the city at 8:10 UTC (2:10 local time) on 13 June 2010 (see UNOSAT Emergency Analysis 1). Almost all affected buildings appear to have been residential or situated within residential neighborhoods, however there are a few cases of destroyed or severely damaged industrial warehouses or commercial/government facilities. No damages have been observed to the transportation network (e.g. roads, bridges) or other key infrastructure sites within the city. Virtually all affected buildings are directly accessible from main primary or secondary roads.
ANALYSIS NOTES: the following damage analysis is based on crisis satellite imagery from 18 June 2010 and pre-conflict satellite imagery from 21 July 2002 (provided by Google Earth). Affected buildings were classified as destroyed or severely damaged by standard image interpretation methods. The figures on building damages likely represent minimum estimates. Actual damages could be higher, especially for severe and moderate levels of building damages which are more difficult to identify with a high degree of confidence from the available satellite imagery. This is an initial damage assessment and has not yet been validated on the ground.
Please send additions/corrections to UNITAR/UNOSAT at emergencymapping@unosat.org.
Map scale for A4: 1:25,000; Projection: UTM Zone 43N, Datum: WGS-84.
Satellite Imagery : QuickBird 02
Resolution : 60cm
Imagery Date : 18 June 2010
Source : Eurimage S.p.A.
Copyright : DigitalGlobe 2010
Fire Data : MODIS Aqua - Terra
Fire Processing : U.of Maryland, NASA
Fire Dates : 9 - 14 June 2010
Elevation Data : Aster GDEM
Source : METI & NASA 2009
Admin. Data : OCHA
Road & City Data : Google MapMaker
Report Analysis : UNITAR / UNOSAT
Report Production : UNITAR / UNOSAT
Analysis Date : 19 June 2010