Special Section on Remote Sensing of the Wenchuan Earthquake

Detection of land surface change due to the Wenchuan earthquake using multitemporal advanced land observation satellite-phased array type L-band synthetic aperture radar data

[+] Author Affiliations
Jingjuan Liao, Guozhuang Shen

Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100101 China

J. Appl. Remote Sens. 3(1), 031680 (May 26, 2009). doi:10.1117/1.3142466
History: Received November 1, 2008; Revised April 20, 2009; Accepted April 30, 2009; May 26, 2009; Online May 26, 2009
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Abstract

A strong earthquake, with a magnitude of 8.0, hit in the Wenchuan area of China on May 12, 2008, resulting in significant changes to the land surface. Remote sensing (RS), especially synthetic aperture radar (SAR) RS technology can play a key role in detecting changes of the land surface. In the present paper, multitemporal Advanced Land Observation Satellite- Phased Array type L-band Synthetic Aperture Radar (ALOS-PALSAR) data acquired on Feb. 17 and May 19, 2008 were used to analyze the land surface changes caused by the Wenchuan earthquake. The characteristics of the land surface in several sites hit by the earthquake are presented, by comparison of pre- and post-seismic images. Subsequently, the land surface changes caused by the earthquake were extracted using change detection and classification methods. To this end, land surface change detection can provide a detailed basis for assessing an earthquakes impact.

© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Jingjuan Liao and Guozhuang Shen
"Detection of land surface change due to the Wenchuan earthquake using multitemporal advanced land observation satellite-phased array type L-band synthetic aperture radar data", J. Appl. Remote Sens. 3(1), 031680 (May 26, 2009). ; http://dx.doi.org/10.1117/1.3142466


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