This proposal will focus on the current edging problems in earthquake science in fault zone healing process, multiple-fault segmentation kinematics and dynamics, and the mechanism and seismic hazard assessment of intermediate depth subduction zone events. These three subjects are keen in the earthquake science community, and, also important for Taiwan toward seismic hazard assessment. Fault zone healing process is difficult to achieve due to the lack of long-term in-situ monitoring after an large earthquake. Taiwan Chelungpu-fault Drilling Project Borehole seismometers provided this unique opportunity to provide the most up to date observation and modeling of the healing and microearthquake nucleation process. Although several important papers had been published from this borehole seismometers, the unique setting with long lasting of 10 years observation provide significant scientific impact to the society on fault zone dynamics. In addition to the micro earthquake study for earthquake nucleation, the procedure on how earthquake growth from small to large earthquake is an important task for understanding earthquake dynamics and its potential hazard. We develop the dynamic modeling for fault zone slip-weaking relationship, and apply to the historical earthquake for multiple-fault segmentation rupture process. This dynamic modeling could help to understand how multiple fault segment rupture dynamic in certain fault system. For seismic hazard assessment, another important by not yet well incorporated is the ground shaking of potential large intermediate depth subduction zone events. In view of several recent intermediate depth subduction zone events to the above metropolitan cities and historical large intermediate depth subduction zone events in Taiwan (e.g. 1909, 1910 Taipei events), this project would like to aim these subduction zone events to understand the mechanism and potential ground shaking for hazard assessment.
|Effective start/end date||1/08/20 → 31/07/21|
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):