Slip zone dynamics-inversion analysis from intra-slip-zone materials

利用1996年台湾集集地震激活的穿透车龙埔断裂的钻孔岩心，研究了大地震的能量耗散模式。总耗能被简单地假设为滑动带中矿物颗粒的摩擦热能和破碎能之和。分析进展已阐明，但化学过程，如溶解-沉淀，主要是由颗粒粉碎激活的。滑移带内流体与粉碎颗粒之间的反应所激活的动态化学过程是一个尚未被认识的因素。我们正在努力解决地震滑动过程中的化学过程。

Mode of energy dissipation by an large earthquake is examined by using drilled core penetrating the Chelung-pu Fault, being activated by 1996 Chi-chi earthquake, Taiwan. Total dissipated energy was simply assumed as sum of heat energy by friction and fracture energy by pulverization of mineral grains contained in the slip zone. Progress of analysis clarified, however, chemical process, such as dissolution-precipitation is dominantly activated by grain comminution. Dynamic chemical process activated by reaction between intra-slip zone fluid and comminuted grains is an as-yet-unrecognized factor. We are trying to solve chemical process during seismic slip.