HR: 1340h
AN: T43B-1363    [Abstracts]
TI: Surface deformation adjacent to the Hukou fault in Northwestern Taiwan detected by ENVISAT ASAR interferometry
AU: * Chang, Y
EM: 956202003@cc.ncu.edu.tw
AF: Institute of Geophysics, National Central University, No. 300, Jhongda Rd., Jhongli, 32001, Taiwan
AU: Chang, C
EM: cpcchang@csrsr.ncu.edu.tw
AF: Institute of Geophysics, National Central University, No. 300, Jhongda Rd., Jhongli, 32001, Taiwan
AU: Chang, C
EM: cpcchang@csrsr.ncu.edu.tw
AF: Center for Space and Remote Sensing Research, National Central University, No. 300, Jhongda Rd., Jhongli, 32001, Taiwan
AB: The Taiwan Island, which is young, as revealed by its dense seismic activities and rapid surface deformation, is located at the convergent zone between Eurasia plate and Philippine Sea plate. Because of the continued northwestward movement of the Philippine Sea plate and the active extension of the Okinawa Trough, the northern part of Taiwan is now under deformation. Since the northern Taiwan is the most populated area in Taiwan, the tectonic activity and the potential geological hazard of this area is an important issue for Taiwan. In order to realize the surface deformation behavior of this area, we apply DInSAR-technique to engage this study. The Hukou fault, main focus of this study, is one of the major and active structures in northwestern Taiwan, along which some industrial parks and communities are well developed. The SAR images used in this study are all acquired from 2003 to 2007 by ENVISAT satellite, which is launched by the European Space Agency in 2002. Our preliminary interferometric results reveal that the surface deformation in the urban areas are much clear than that in mountainous and rural areas. In some areas, juxtaposed against the fault zones, clear deformation patterns are obviously observed indicates that the deformation of this area is still active. After stacking all our interferometric results, we obtain that the average slant range displacement (SRD) reaches to around 0.5 cm/yr near the fault area. Radar Interferometry can efficiently be applied to observe the land surface deformation, and further help us to interpret and predict the underground tectonics and potential natural hazard.
DE: 8040 Remote sensing
DE: 8107 Continental neotectonics (8002)
DE: 8118 Dynamics and mechanics of faulting (8004)
DE: 8140 Ophiolites (3042)
DE: 8150 Plate boundary: general (3040)
SC: Tectonophysics [T]
MN: 2007 Fall Meeting