• 首页关于本刊投稿须知期刊订阅编委会期刊合作查询检索English

查看全文   查看HTML全文 下载PDF阅读器  

  高洋,徐彦.2011年腾冲中强地震序列震源机制和发震构造研究[J].震灾防御技术,2015,10(s1):712-723, DOI:10.11899/zzfy2015s102.

2011年腾冲中强地震序列震源机制和发震构造研究
摘要:    2011年腾冲地区连续发生了3次中强地震,本文运用全波形模拟的方法研究了这3次中强地震序列的震源机制解,并对地震序列进行了重定位。笔者结合由震源机制解及重定位结果对其发震构造进行了分析,认为3次中强地震及序列均位于同一发震构造,呈北西走向,破裂面倾角陡直,在近水平的北北东向压应力作用下作右旋水平走滑错动,断层较浅仅限于上地壳,活动过程有向深部发展的趋势;震源区附近无明显已知构造与发震构造相对应,发震构造可能为未知隐伏构造。
作者单位
高洋 云南省地震局昆明 650224 
徐彦 云南大学昆明 650091 
关  键  词:腾冲地震序列  震源机制解  地震构造
DOI:10.11899/zzfy2015s102
基金项目:
收稿日期:2015-06-03
作者简介:高洋,男,生于1980年。工程师,2005年毕业于中国科学院研究生院(本部),获硕士学位。现主要从事地震监测和地震学研究工作。E-mail: dafang222@sina.com
通讯作者:
Focal Mechanisms and Seismogenic Structures of Tengchong Mediate-Strong Earthquake Sequences in 2011
Abstract:      Using the data recorded by the Yunnan Digital Seismic Network, we calculate the focal mechanisms of Tengchong mediate-strong earthquake sequences in 2011. We also relocate three earthquake sequences. Based on the results of focal mechanisms and relocation we analyze the seismogenic structure. Our results suggest that three mediate-strong earthquakes and aftershocks occurred on the same seismogenic structure which is a NW striking fault with steep fault plane. The tectonic stress field in source areas is oriented as NNE, in almost horizontal compressive stress field. The fault is a right-lateral strike slip fault cutting upper crust from shallow toward deep place. We infer that three earthquake sequences are caused by an unknown hidden fault buried in Tengchong area.
Keywords:  Tengchong sequences  Focal mechanism  Seismogenic structure
关闭