固体地球物理学术报告通知-李戈

报告地点:教学行政楼 706会议室

报告时间:2021-04-16 从 15:00 到 16:30

报告人:李戈

报告人简介:

李戈2014年中国科学技术大学固体地球物理专业毕业,2020年获得麦吉尔大学地震学博士学位。研究方向是断层两侧物性差异和结构的不规则性对地震破裂的影响。

报告题目:Fault zone geometrical complexity and material contrast on earthquake rupture propagation: Observation and modelling

报告内容简介

Seismic hazard analysis of continental faults is a difficult task due to many challenges. For continental faults, fault geometrical complexity and bimaterial contrast often coexist and the study on their joint influence is still insufficient.

In this talk, I will first explore how to identify hidden crustal seismogenic structures associated with the Leech River fault zone (LRFZ) based on seismic analysis incorporated with existing geologic data. Then, I investigate earthquake rupture propagation across the LRF step-over system based on 3D finite-element simulations, focusing on rupture jumping scenarios from the LRF to one of its neighboring fault systems. Finally, based on 2D finite-element simulations, I will show the joint influence of restraining fault bends and the bimaterial effect on rupture processes.