Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4693533 | Tectonophysics | 2010 | 9 Pages |
Abstract
High-resolution 3-D VP and VS velocity models around the source region of the Mw7.6 Chi-Chi, Taiwan, earthquake show significant lateral and vertical variations. The mainshock occurred within a narrow low velocity zone along the Chelungpu fault. A sudden increase of velocity and seismicity took place across the Shuilikeng fault to the east. Most aftershocks were located in areas of high VP and VS. A sharp east-dipping zone extending from the Shuilikeng fault on the surface to a depth of about 15Â km separates the low velocity region in the west from the high velocity region in the east. An apparent high-angle west-dipping seismic zone lies at depths of 15-30Â km beneath the western Central Range. Numerous aftershocks with normal faulting were located west of the middle segment of the Chelungpu fault.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
Kwang-Hee Kim, Kou-Cheng Chen, Jeen-Hwa Wang, Jer-Ming Chiu,