祁连山地震构造带沙层应力仪观测记录与地震活动初步分析  

Preliminary Research on the Relationships between Observation Data of the Sand layer Stress Gauge and Seismic Activity in Qilan Mountain Seismotectonic Belt

作　　者：程建武 郭雪莲[2] 董治平 郑卫平 

机构地区：[1]甘肃省地震局,甘肃兰州730000 [2]兰州大学,甘肃兰州730000

出　　处：《地震研究》2014年第1期39-45,171,共7页Journal of Seismological Research

基　　金：甘肃省地震局(所)地震科技发展基金(2012M06);国家自然科学基金(41202129)联合资助

摘　　要：采用2008年在祁连山地震构造带上兰州观象台和嘉峪关中心台架设的两台沙层应力仪4年多的观测资料,分析了沙层应力记录的基本特征及其与地震活动的关系,初步探讨了沙层应力记录与强震孕育过程的关系。结果表明,沙层应力记录在一定程度上反应了地震孕育和发生过程中的一些应力变化信息,对于捕捉临震信息有一定的参考意义,但也存在较多不确定性,需要进一步分析判定。Using the observation data in four years recorded by two sand layer stress gauges which were set up at Lanzhou Earth Observatory and Jiayuguan Stations in Qilian Moutain Seismotectonic Belt since 2008,we analyzed the basic characteristics of sand layer stress recording and its relation with seismic activity,and preliminary discussed the relationship between two sand layer stress recordings and the strong earthquake preparation.The resuits showed that the sand layer stress recording reflected the stress variation in the process of earthquake preparation and occurrence in a certain extent,and had certain reference significant to capture the impending earthquake information.However,there were also some uncertainties and needed to do the further research to analyze and determine.

关 键 词：地震活动 沙层应力记录 应力变化 祁连山地震构造带 

分 类 号：P315.7[天文地球—地震学]