The plate contact geometry investigation based on earthquake source parameters at the Burma arc subduction zone

查看全文 作　　者：ZHANG [1]LangPing;SHAO [1]ZhiGang;MA [2]HongSheng;WANG [3]XingZhou;LI [4]ZhiHai

机构地区：[1]Key Laboratory of Earthquake Prediction,Institute of Earthquake Science,China Earthquake Administration;[2]China Earthquake Administration;[3]Earthquake Administration of Anhui Province;[4]Earthquake Administration of Xinjiang Uygur Autonomous Region

出　　处：《Science China Earth Sciences》索引2013年第56卷第5期,共12页

基　　金：supported by the National Science and Technology Support Plan Project (Grant No.2012BAK19B01-04) 摘　　要：Accurately characterizing the three-dimensional geometric contacts between the crust of the Chinese mainland and adjacent regions is important for understanding the dynamics of this part of Asia from the viewpoint of global plate systems.In this paper,a method is introduced to investigate the geometric contacts between the Eurasian and Indian plates at the Burma arc subduction zone using earthquake source parameters based on the Slab1.0 model of Hayes et al.(2009,2010).The distribution of earthquake focus depths positioned in 166 sections along the Burma Arc subduction zone boundary has been investigated. Linear plane fitting and curved surface fitting has been performed on each section.Three-dimensional geometric contacts and the extent of subduction are defined quantitatively.Finally,the focal depth distribution is outlined for six typical sections along the Burma arc subduction zone,combining focal mechanisms with background knowledge of geologic structure.Possible dynamic interaction patterns are presented and discussed.This paper provides an elementary method for studying the geometric contact of the Chinese mainland crust with adjacent plates and serves as a global reference for dynamic interactions between plates and related geodynamic investigations. 关键词：印度洋板块三维几何震源参数俯冲带缅甸地震基础中国大陆

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The plate contact geometry investigation based on earthquake source parameters at the Burma arc subduction zone

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