GPS and SAR offset displacements from Sumatra-Andaman Earthquake Mw9.2 on December 26, 2004

[ABSTRACT] The Sumatra-Andaman eathquake, the epiceter about 163 km western part of Sumatra island, occured on Decemeber 26, 2004 at 7:58 a.m. local time. The magnitude of the earthquake was 9.1 on the moment magnitude scale and became one of the largest magnitude of the earthquake in world. We use the benefit tools of Amplitude Maching Pixeal of Synthetic Aperture Radar (SAR) data to make a rough estimation of crustal displacement associated with this earthquake. Fours of C-band synthetic aperture radar (SAR) images acquired by ERS-2 synthetic aperture radar instrument are analysed. We processed raw SAR data to produce SLC (Single Look Complex) and to obtain offset displacement. We also processed daily GPS observation data to estimate the coordinate of GPS sites in ITRF2000. The results of offset SAR displacement show that maximum displacement in northren part Sumatra Island is 4-6 meters. We found in SAMP station, located 330km from epicenter, which coseismic step is 144cm from east to west direction. In north site such us in BNKK, PHKT, CPNl, ARAU, IPOH, BEHR and KUAL coseismic displacement detected well by this method, and almost these site moves to epicental direction. Generally our result agrees well with long span GPS observation.

https://opac.ll.chiba-u.jp/da/curator/103187/

https://opac.ll.chiba-u.jp/da/curator/103187/BA64563608-11-P085.pdf

千葉大学環境リモートセンシング研究センター

Chiba University. Center for Environmental Remote Sensing

会議発表用資料

BA64563608

CEReS環境リモートセンシングシンポジウム資料集 = Proceedings of the CEReS symposium on environmental remote sensing

11

85

94

2009-02-23

publisher

環境リモートセンシング研究センター「CEReSシンポジウム資料集」