|本期目录/Table of Contents|

[1]董 蕾,李建有,姜维松,等.重庆及周边地区地壳各向异性研究[J].地震研究,2021,(02):145-151.
 DONG Lei,LI Jianyou,JIANG Weisong,et al.Study of the Crustal Anisotropy beneath Chongqing and Its Surrounding Area[J].Journal of Seismological Research,2021,(02):145-151.
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重庆及周边地区地壳各向异性研究(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
期数:
2021年02期
页码:
145-151
栏目:
出版日期:
2021-06-30

文章信息/Info

Title:
Study of the Crustal Anisotropy beneath Chongqing and Its Surrounding Area
作者:
董 蕾1李建有2姜维松1李翠平1
(1.重庆市地震局,重庆 401147; 2.昆明南方地球物理技术开发有限公司,云南 昆明 650091)
Author(s):
DONG Lei1LI Jianyou2JIANG Weisong1LI Cuiping1
(1.Chongqing Earthquake Agency,Chongqing 401147,China)(2.Kunming Southern Geophysical Technology Development Inc.,Kunming 650091,Yunnan,China)
关键词:
接收函数 地壳各向异性 重庆及周边地区
Keywords:
receiver function crustal anisotropy Chongqing area
分类号:
P313.3
DOI:
-
摘要:
根据重庆及周边地区固定地震台站记录的远震资料提取了接收函数,并利用接收函数Pms相到时方差最小方法建立网格搜索,最终获得该区的地壳各向异性参数。结果表明:重庆及周边地区的地壳各向异性延迟时间为0.14~0.91 s,平均为0.4 s; 快波偏振方向主要有NEE、NNW和NWW向,并且大部分台站快波方向与所在区域的主压应力方向明显不一致; 重庆地区地壳各向异性具有横向不均匀性及分区特征,岩石圈形变特征主要来自地幔各向异性。
Abstract:
In this paper,a receiver function is extracted from the teleseismic data recorded by the seismic network and earthquake stations in Chongqing and its surrounding areas,and a grid search is established by using the minimum variance of arrival time of Pms phase of the receiver function.Finally anisotropic parameters of the crust are obtained.The results indicate that the delay time of the crustal anisotropic in Chongqing and its surrounding areas is ranges within 0.14~0.91 s,with an average of 0.4 s; The fast wave mainly polarizes in NEE,NNW,and NWW directions,and the direction of the fast wave at most of the stations is obviously different from the direction of the main compressive stress in the study area.And in this area the anisotropy of the crust features transverse heterogeneity and zoning; the characteristics of lithospheric deformation are mainly derived from mantle anisotropy.

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备注/Memo

备注/Memo:
收稿日期:2020-07-05
基金项目:地震监测、预测、科研三结合课题(3JH-202001072)资助.
更新日期/Last Update: 2021-06-30