Tectonic activity inferred from velocity field of GPS measurements in the
                               Pingtung-Kaohsiung area, southwestern Taiwan

                                                      Tai-Yun Liu
                                                       Abstract

                        We use the GPS measurements for investigating the fault surface 
                      activity and crustal deformation patterns in southwestern Taiwan located 
                      the transition zone from collision to subduction. The velocity field in 
                      study area is from 56.3 mm/yr to 19.6 mm/yr along azimuths from 272.4? 
                      to 250? westward. In the western study area, the displacement vectors 
                      show a counterclockwise deviation toward southwestern, which we 
                      explain it in terms of lateral extrusion bounded by the major faults of the 
                      study area. The GPS vectors indicate that the Chishan Fault and the 
                      Deformation Front move with the right-lateral component. In addition, 
                      the Chaochou Fault and the Kaoping Fault are dominated by left-lateral 
                      extrusion.Furthermore, we exploit the GPS data to calculate the strain rate 
                      in study area. The result of strain rate revealed a southward increasing of 
                      extension strain rate and implies that the tectonic extrusion occurs along 
                      the blocks bounded by major faults.

                                                       Reference

                      Ho, W.Y., Hu, J.C., Ching, K.E., Rau, R.J., Chang, T.Y., Hou, C.S., Lin, K.C., 
                      Tectonic activity inferred from velocity field of GPS measurements in the 
                      Pingtung-Kaohsiung area, southwestern Taiwan


                                                  (Abstract)(Full text)

                      Lacombe, O., Mouthereau, F., Angelier, J., Deffontaines, B., 2001. Structural, 
                      geodetic and seismological evidence for tectonic escape in SW Taiwan. 
                      Tectonophysics 333, 323-345.


                                                  (Abstract)(Full text)

                      胡植慶，2004，高屏地區活動斷層之衛星定位系統測量，2004年台灣活動斷層與地震災害研討會， 
                      76-85頁


                                                  (Abstract)(Full text)