2003年台東成功地震對於縱谷斷層地震活動度之影響

Influence of seismicity rate change due to Chengkung earthquake along the Longitudinal Valley fault

彭葦(Wei Pneg)

指導教授 ： 胡植慶

國立臺灣大學/理學院/地質科學研究所/碩士(2010年)

https://doi.org/10.6342/NTU.2010.02436

摘要

無資料

關鍵字

成功地震 ； 庫倫應力 ； 斷層觸發

並列摘要

Coulomb stress changes had been discussed broadly for understanding the earthquake interaction. Most successful studies were focused on the strike-slip fault system, such as San Andreas fault and north Anatolian fault. Comparing to the strike-slip fault, the complexity of thrust fault system is that the coulomb stress transfer varies with the depth and leads more uncertainty of subsurface structures to calculate the stress transfer. In this study we focused on a creeping Chihshang fault with the creeping rate of about 2-3 cm/yr, which ruptured on December 12, 2003 by Mw 6.5 Chenkung earthquake in eastern Taiwan. We calculated the coulomb stress change with different type of reciver fault in order to figure out how the background seismicity rate along the locked and crreping zone does influence the coulomb stress change. Futhermore, we want to discuss the fault interaction where April 1, 2006 Mw 6.4 Taitung earthquake which stress increasement probably imparted by the 2003 Chenkung earthquake.

並列關鍵字

rate/state model ； coulomb stress change ； earthquake triggering ； Chengkung earthquake

參考文獻

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Angelier, J., Chu, H.T. and Lee, J.C., 1997. Shear concentration in a collision zone: Kinematics of the Chihshang Fault as revealed by outcrop-scale quantification of active faulting, Longitudinal Valley, eastern Taiwan. Tectonophysics, 274(1-3): 117-143.

Angelier, J., Chu, H.T., Lee, J.C. and Hu, J.C., 2000. Active faulting and earthquake hazard: The case study of the Chihshang Fault, Taiwan. Journal of Geodynamics, 29(3-5): 151-185.

Chang, C.P. et al., 2003. Strain and stress field in Taiwan oblique convergent system: constraints from GPS observation and tectonic data. Earth and Planetary Science Letters, 214(1-2): 115-127.

Chang, S.H., Wang, W.H. and Lee, J.C., 2009. Modelling temporal variation of surface creep on the Chihshang fault in eastern Taiwan with velocity-strengthening friction. Geophysical Journal International, 176(2): 601-613.