Journal
INTERNATIONAL JOURNAL OF DIGITAL EARTH
Volume 2, Issue 4, Pages 309-326Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17538940902767401
Keywords
damage assessment; earthquake; Sichuan; settlements; VHR; SAR
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The paper discusses the potential of very high resolution (VHR) satellite imagery for post-earthquake damage assessment in comparison with the role of aerial photographs. Post-disaster optical and radar satellite data are assessed for their ability to resolve collapsed buildings, destroyed transportation infrastructure, and specific land cover changes. Optical VHR imagery has shown to be effective in quantifying building stock and for assessing damage at the building level. High-resolution synthetic aperture radar (SAR) imagery requires further research to identify optimum information extraction procedures for rapid assessment of affected buildings. Based on current technical and operational capabilities increasing efforts should be devoted to the generation of spatial datasets for disaster preparedness.
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