摘要
震源机制解研究是认识地震发震断层的重要手段,也是理解深部构造应力和地震发震机制的重要依据。2013年4月20日四川芦山发生Ms 7.0级地震,利用近震直达P波初动极性反演了地震机制解,同时利用全球地震台网波形记录,反演了地震机制解和矩心深度。两种方法所得发震断层走向倾角滑动角分别为208°/41°/98°和220°/46°/93°,表明这次地震为一高角度逆冲型地震,远震波形反演得到的矩心深度为12km。
Focaal mechanism provides key info,＇mation on seismogenic fauh and helps to understand tectonic stress field and . Firstmotion of direct P waw＂ recorded at regional seismic＇ station and teleseismic body wave were employed to invert focal mechanism of Lushan MS 7.0 earthquake, April 20, 2013. The strike, dip and rake of fauh planes of our results are 208°/41°/98°and 220°/46°/93° respectively. Both fault plane and centroid depth are close to results provided bv other institutes with different methods and dataset.
出处
《科技导报》
CAS
CSCD
北大核心
2013年第12期15-18,共4页
Science & Technology Review
基金
国家自然科学基金项目(41204044)
