Journal
REMOTE SENSING
Volume 2, Issue 9, Pages 2111-2126Publisher
MDPI
DOI: 10.3390/rs2092111
Keywords
synthetic aperture radar; earthquake; building damage; seismic intensity; integration
Categories
Funding
- Development of real-time tsunami damage detection technology for expeditious disaster response of Japan [08E52010a]
- NEDO (New Energy and Industrial Technology Development Organization) Industrial Technology Research Grant Program
- [21310119]
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For a quick and stable estimation of earthquake damaged buildings worldwide, using Phased Array type L-band Synthetic Aperture Radar (PALSAR) loaded on the Advanced Land Observing Satellite (ALOS) satellite, a model combining the usage of satellite synthetic aperture radar (SAR) imagery and Japan Meteorological Agency (JMA)-scale seismic intensity is proposed. In order to expand the existing C-band SAR based damage estimation model into L-band SAR, this paper rebuilds a likelihood function for severe damage ratio, on the basis of dataset from Japanese Earth Resource Satellite-1 (JERS-1)/SAR (L-band SAR) images observed during the 1995 Kobe earthquake and its detailed ground truth data. The model which integrates the fragility functions of building damage in terms of seismic intensity and the proposed likelihood function is then applied to PALSAR images taken over the areas affected by the 2007 earthquake in Pisco, Peru. The accuracy of the proposed damage estimation model is examined by comparing the results of the analyses with field investigations and/or interpretation of high-resolution satellite images.
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