Title :
Application of InSAR on the research of Mani strong earthquake
Author :
Zhao, Liu ; Jingfa, Zhang
Author_Institution :
Inst. of Geo-Spatial Inf., Tsinghua Univ., Beijing, China
Abstract :
InSAR is an advanced technology for measurement of crustal deformation with high precision. This paper deals with measurement of the crustal deformation one year before, and the coseismic displacement in, the 7.4 Ms earthquake in Mani, Tibet on November 9, 1997. Five image pairs composed of five scenes of ERS-1/2 data are selected within the range of 50 km×50 km around the earthquake center, which form two D-InSAR image pairs, respectively denoting crustal deformation one year before the earthquake and the coseismic displacement. The InSAR technology is then used to process these image data and ideal results are achieved. On the D-InSAR image of coseismic displacement, the effects of the earthquake faults are clearly seen. In the diagonal direction, deformations up to 0.5 m can be detected, which shows the special advantage and prospect of InSAR technology on quantitative study on coseismic displacement and quake faults
Keywords :
Earth crust; earthquakes; radar imaging; radiowave interferometry; remote sensing by radar; synthetic aperture radar; terrain mapping; AD 1997 11 09; ERS-1/2 data; InSAR; Mani earthquake; Tibet; coseismic displacement; crustal deformation; earthquake faults; image data; image pairs; interferometric synthetic aperture radar; Earthquakes; Synthetic aperture radar interferometry;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.978206
