摘要
以精河水平摆观测数据为研究对象,通过定量剔除温度对观测数据的影响,提取观测数据的异常特征。然后结合2017-08-09新疆精河6.6级地震的发震构造、震源机制、台站位置等,对精河水平摆的震前异常进行深入探讨。NS分量自2016-06起持续N倾,EW分量自2016-09起快速E倾,2016-12-17其E倾速率再次加快,幅度达0.48″的两项异常为精河6.6级地震前应力积累所致。
Taking Jinghe horizontal pendulum observation data as the research object,we eliminate the influence of temperature on observation data to extract the abnormal characteristics of observed data.Then,combining this with the seismogenic structure of the earthquake,focal mechanism,station location and seismogenic tectonic relationship,etc.,before the earthquake anomaly of Jinghe horizontal pendulum,we infer:(1)the NS component continues to be inclined since June 2016;(2)the EW component has been rapidly leaning since September 2016,and on 17 December the rate of leaning accelerates again by 0.48,which is caused by the stress accumulation before the magnitude 6.6 earthquake.
作者
许璐
邢喜民
XU Lu;XING Ximin(College of Mathematics and Statistics,Yili Normal University,448 West-Jiefang Road,Yining 835000,China;Earthquake Agency of Xinjiang Uygur Autonomous Region,338 Second-Kexue Street,Urumqi 830011,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2019年第5期547-550,共4页
Journal of Geodesy and Geodynamics
基金
中国地震局地震科技星火计划(XH19049)
中国地震局"三结合"课题(CEA-JC/3JH-173103)
新疆维吾尔自治区"十三五"重点学科(数学)开放课题(No.XJZDXK-M2017003)~~
关键词
精河6.6级地震
精河水平摆
震源机制
发震构造
地震异常
Jinghe M6.6 earthquake
Jinghe horizontal pendulum
focal mechanism
seismogenic structure
seismicanomaly