|本期目录/Table of Contents|

[1]张晓清,袁伏全,余娜.2016年门源6.4级地震地脉动应变前兆异常特征初步研究*[J].地震研究,2016,39(增刊):35-42.
　ZHANG Xiaoqing,YUAN Fuquan,YU Na.A Preliminary Study on the Precursor Anomaly Characteristics of Microtremor Strain of Qinghai Menyuan MS6.4 Earthquake in 2016[J].Journal of Seismological Research,2016,39(增刊):35-42.
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2016年门源6.4级地震地脉动应变前兆异常特征初步研究*(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
39
期数:
2016年增刊
页码:
35-42
栏目:
出版日期:
2016-11-20

文章信息/Info

Title:
A Preliminary Study on the Precursor Anomaly Characteristics of Microtremor Strain of Qinghai Menyuan MS6.4 Earthquake in 2016
作者:
张晓清; 袁伏全; 余娜
青海省地震局,青海 西宁 810001
Author(s):
ZHANG Xiaoqing; YUAN Fuquan; YU Na
Earthquake Administration of Qinghai Province,Xining 810001,Qinghai,China
关键词:
门源地震;  地脉动;  地壳应变场
Keywords:
Menyuan MS6.4 earthquake;  microtremor;  crustal strain field
分类号:
P315.727
DOI:
-
摘要:
以青海区域数字地震台网地脉动观测资料为基础,对2016年1月21日门源6.4级地震前青海及周边的区域应变场进行分析研究,总结了此次地震震前应变场的时空演化特征。研究结果表明:在门源6.4级地震前,区域应变场空间上表现为,在震中附近出现张压相间的应变梯度带,其张性和压性区域的应变强度大致相当; 应变强度在时间进程表现为,随着发震时刻的临近,震中附近区域应变强度在震前6天左右升高,大约是背景值的4倍。
Abstract:
On the basis of the microtremor observation data in Qinghai Regional Digital Network,we studied and analyzed the regional stress field in Qinghai and its adjacent area,and summarized spatial and temporal evolution characteristics of strain field before Menyuan MS6.4 earthquake on Jan.21,2016. The results indicate that:the spatial distribution of regional strain field showed the strain gradient zone of tension and compression near the epicenter before the earthquake,and the strength of strains were roughly equivalent in tension and compression areas. The strain intensity in the time process showed that as the time of earthquake was approaching,the regional strain intensity increased near the epicenter in about 6 days before the earthquake,and was about 4 times higher than the background value.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-08-23
基金项目:运用GPS与数字化地震资料开展青海及邻区强震危险性研究(2013-Z-710)和中国地震局星火计划(XH16039)联合资助.

更新日期/Last Update: 2016-10-20