活動斷層可包含持續數秒地震至數百萬年潛移所累積造成的變形。而不同的作用，如流體力學，摩擦 與流變學，在不同尺度下塑造其斷層岩石。因此，本計晝著重於地震活動斷層的斷層作用，摩擦與弱 化(或強化)作用，相關的研究子主題如下：（1)量化地震活動斷層中斷層岩石的内部組構並與高解析度 地震資料之比較，以及鑑定與地震破裂作用相關之礦物與微構造指標；（2)藉由岩石力學實驗獲得慢速 至快速滑移時之摩擦性質，辨識可能產生之作用與相關的微構造；和(3)估計地震源的相關參數，如斷 層強度和能量分配等。這個以自然界觀察與實驗室模擬為基底的研究，將揭示有關地震物理一些新的 看法，也有助於提供活動斷層研究重要的訊息及其相關之地震災害有更良好的視野。 ;Active faults accommodate consequential deformations from earthquakes lasting seconds to silent creep lasting millions of years. Multi-faceted processes of fluid flow, friction and rheology shape the fault rocks at all scales. Therefore, we focus on the topics of faulting, friction and weakening (or strengthening) of seismically active faults through a group of interrelated sub-projects: (1) quantification of the internal structure of seismic sources in fault-zone rocks and its comparison with high-resolution seismological data from active faults, and recognition of mineralogical and microstructural indicators of seismic ruptures within fault zones; (2) determination of frictional properties, processes and the associated microstructures from slow to fast motion with rock deformation experiments; and (3) estimation of earthquake source parameters such as dynamic fault strength and earthquake energy budgets. This field- and experimentally-based approach will both reveal a new view of earthquake physics and provide fundamental insight together with significant applications to earthquake hazard.
