Detection of urban disaster using InSAR - a case study for the 1999 Great Taiwan Earthquake

Shoji Takeuchi, Yuzo Suga, Chinatsu Yonezawa, A. J. Chen

Research output: Contribution to conferencePaperpeer-review

18 Citations (Scopus)

Abstract

The authors studied the applicability of interferometric SAR (InSAR) using ERS-2 SAR data for detecting damaged urban areas by the Great Taiwan Earthquake (Chi-Chi Earthquake) occurred on Sep. 21, 1999. Three temporal ERS-2 SAR data acquired by Taiwan ground station on Jan. 21, May 6, and Sep. 23, in 1999 were used as the test data. By overlaying two SAR multi-look intensity images before (May 6) and after (Sep.23) the earthquake, it was found that the damaged urban areas by the earthquake were hardly detected only by the intensity change. On the other hand, the overlay of the two coherence images from the pairs (Jan. - May) and (May - Sep.) indicated that the urban areas damaged severely (e.g. Dongshi) resulted in clear decrease of coherence by the earthquake occurrence, while the coherence in the urban areas not damaged severely (e.g. Taichung) did not change even after the earthquake. The result of this study suggests that InSAR technology has a great potential for detecting urban disasters by earthquake.

Original languageEnglish
Pages339-341
Number of pages3
Publication statusPublished - 2000 Dec 1
Externally publishedYes
Event2000 Interantional Geoscience and Remote Sensing Symposium (IGARSS 2000) - Honolulu, HI, USA
Duration: 2000 Jul 242000 Jul 28

Other

Other2000 Interantional Geoscience and Remote Sensing Symposium (IGARSS 2000)
CityHonolulu, HI, USA
Period00/7/2400/7/28

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Detection of urban disaster using InSAR - a case study for the 1999 Great Taiwan Earthquake'. Together they form a unique fingerprint.

Cite this