Slip vectors of the surface rupture of the 1999 Chi-Chi earthquake, western Taiwan

Subsurface Structure, Physical Properties, and Fault Zone Characteristics in the Scientific Drill Holes of Taiwan Chelungpu-Fault Drilling Project

“…The most striking feature of the coseismic displacement field in the hanging-wall is that areas of large surface displacement lie above the footwall ramp of the thrust and at the northern termination. By contrast, relatively smaller, but significant (1 -3 m) displacements are recorded at the footwall detachment (Yu et al 2001;Dominguez et al 2003;Lee et al 2003). Along strike, both horizontal and vertical components of surface displacements increase from south to north and reach up to 12 m at the northern end near the Shihgang area.…”

Core Description and Characteristics of Fault Zones from Hole-A of the Taiwan Chelungpu-Fault Drilling Project

“…The mapping suggested that: (1) the Chi-Chi rupture is at a depth of 1200 m beneath the drill site; and (2) the Sanyi fault zone might be seated beneath the ~800 thick Kueichulin Formation and beneath the Sanyi fault zone; it might be the Toukashan conglomerate formation. Additionally, the constraint of spatial slip distribution from strong motion stations (Ma et al 2001) and geodetic data (Yang et al 2000;Yu et al 2001;Lee et al 2003) shows a coseismic slip of 12 m around the drill site.…”

Inversion of stresses from polyphase fault/slip data with high or low diversity: An updated version of INVSFS

“…A set of artificial multiphase fault/slip data (d) consists of three distinct phases having the same data number in subset (a-c). The first subset (a), taken from Lee et al (2003) is rotated clockwise around the upward directions with an angle of 301 and 601 into the second and the third subsets, (b) and (c). Optimal subsets (e-g) result from hard division using the least-distance criterion to the memberships calculated for C ¼3.…”