A STUDY OF DEFORMATION IN PERMAFROST REGIONS OF QINGHAI-TIBET PLATEAU BASED ON ALOS/PALSAR D-InSAR INTERFEROMETRY

doi:10.6046/gtzyyg.2008.03.04

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Abstract

Surface displacement resulting from seasonal freezing bulge and thawing subsidence constitutes a main

hazard to engineering construction of permafrost regions, especially to the Qinghai-Tibet railway. One of the main

problems that the Qinghai-Tibet railway encounters is the effective detection of the displacement field. The

interferometric SAR technique has the capability for measuring ground deformation in a wide range of application.

PALSAR can keep high coherence in interferometry over non-urban areas, thus very suitable for analyzing

deformation over permafrost regions of Qinghai-Tibet Plateau. This paper presents the method of PALSAR

interferometry for analyzing ground surface displacement. The proposed technique was implemented by using ENVISAT

ASAR images to detect the deformation over permafrost regions of Qinghai-Tibet Plateau, and the results are in

accordance with the results obtained by a traditional ground leveling method. Such an achievement encourages

future utilization of PALSAR interferometry to analyze deformation of the frozen earth in Qinghai-Tibet Plateau.

Keywords Suspended silt Spectra reflectivity Remote sensing monitoring

Issue Date: 06 July 2009

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	Zhang Chungui

Cite this article:

Zhang Chungui. A STUDY OF DEFORMATION IN PERMAFROST REGIONS OF QINGHAI-TIBET PLATEAU BASED ON ALOS/PALSAR D-InSAR INTERFEROMETRY[J]. REMOTE SENSING FOR LAND & RESOURCES, 2008, 20(3): 15-19.

URL:

https://www.gtzyyg.com/EN/10.6046/gtzyyg.2008.03.04 OR https://www.gtzyyg.com/EN/Y2008/V20/I3/15

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