張午龍 副教授
地殼變動、活動構造模擬、地震災害分析
Tel: 03-4227151 ext.65615
Email: wuchang@ncu.edu.tw
Modeled fault-slip rates and coupling from GPS data
(a) long-term slip rates, with gray arrows represent the horizontal movements of the hanging wall relative to the footwall blocks of boundary faults. The inset shows GPS velocities of the Hsiaogangshan fault area in the dashed box; (b) fault coupling coefficients; (c) slip-deficit rates; and (d) interseismic slip rates. These rates were first calculated on fault nodes (white dots in (a), (c), and (d)) and then interpolated linearly over fault planes. (see Chang et al., 2016 for more information)
High-rate GPS data and inversion results for Meinong Mw6.4 earthquake.
(a) Blue lines and red lines denote recorded high-rate GPS and modeled displacements on the North and East components. Red star shows the epicenter from the daily GPS inversion. Time series are cut from -20 to 100 seconds relative to the earthquake origin time. (b) Epoch-by-epoch variance reduction (VR) and inverted focal mechanisms (VR>50%). (c) Comparison between the inverted moment magnitudes (red line) and the USGS and GCMT results (blue line). Gray areas mark the epochs with VR >50%. (see Lin et al., 2019 for more information)
Estimation of strain-rate field in Northern Taiwan from GPS measurements.
(top) Red and blue arrows show the extensional and compressional principal strain rates and directions, respectively, with background gray shade showing the errors; (right) Areal strain rates, or the first invariant of the strain rate tensor, with red and blue colors representing increase and decrease in area, respectively. Yellow triangles show GPS stations.