|本期目录/Table of Contents|

[1]毛慧玲,秦嘉政.2007年宁洱6.4级地震横波分裂研究*[J].地震研究,2011,34(01):0.
　MAO Hui-ling,QIN Jia-zheng.Study on the Shear-wave Splitting of the 2007 Ning'er, Yunnan,MS6.4 Earthquake Sequence[J].Journal of Seismological Research,2011,34(01):0.
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2007年宁洱6.4级地震横波分裂研究*(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
34
期数:
2011年01期
页码:
0
栏目:
出版日期:
2011-03-09

文章信息/Info

Title:
Study on the Shear-wave Splitting of the 2007 Ning'er, Yunnan,MS6.4 Earthquake Sequence
作者:
毛慧玲; 秦嘉政
(云南省地震局,昆明 650224)
Author(s):
MAO Hui-ling; QIN Jia-zheng
(Earthquake Administration of Yunnan Province,Kunming 650224,Yunnan,China)
关键词:
横波分裂;  裂隙各向异性;  延迟时间;  宁洱地震
Keywords:
shear-wave splitting;  extensive dilatancy anisotropy;  delay time;  Ning'er earthquake
分类号:
P315.3+1
DOI:
-
摘要:
通过研究2007年6月3日宁洱MS6.4地震余震序列的三分向记录,为探索横波分裂现象以及上地壳存在裂隙各向异性提供依据,并发现快速S波偏振有两个优势方向,分别为NW140°和NW150°,这与宁洱地区的主应力场方向基本一致。横波分裂延迟时间能够动态反映地下应力场的变化趋势,且较大余震发生之前延迟时间出现大幅度上升。
Abstract:
In this paper,the result of the study about the aftershock-swarm of the MS6.4 earthquake occurred on June 3,2007 in Ning'er,Yunnan Province was given and the existence of both shear-wave splitting and the extensive dilatancy anisotropy in the upper crust of Ning'er region were recognized.The fast shear wave has two preponderant polarization-directions—NW140°and NW150°,which agree with the regional principal compressive stress.The delay time of the shear wave dynamically responds to the variation of stress field and increases before strong aftershocks.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2010-01-04
基金项目:云南省十项措施“云南强震活动与板缘动力学机制研究(JCYB-20080601-4)”与“地球物理场和化学场动态变化与强震活动关系研究(JCYB-20080601-5)”联合资助.

更新日期/Last Update: 2011-03-30