摘要
荣成地震台钻孔倾斜NS分量2017年5月2日出现趋势下降(南倾)异常变化,至15日持续下降累计幅度达358×10^(-3)″,对观测系统工作状态、观测环境干扰、气象因素及地下水位等进行调查,通过滑动相关性分析和三维点源载荷模拟等方法,结合胶东半岛近期地震活动,分析认为,该异常非干扰造成,可能反映了区域地壳应力的变化,需予以关注。
NS component trend of Rongcheng borehole tilt observation declined （tilted to the south） abnormally on May 2, 2017 and declined cumulatively range up to 358×10-3″ until May 15, 2017. After the investigation and analysis about observation system working state, observation environment interference, meteorological factors, underground water level and so on, by means of sliding correlation analysis and 3-D point loading simulation, considering the recent earthquake activity on the Jiaodong peninsula area, we think that the abnormal change was not caused by interference and might reflect the change of the regional crustal stress, which should be paid attention.
作者
贾媛
朱成林
李杰
王梅
荆强
管贻亮
Jia Yuan;Zhu Chenglin;Li Jie;Wang Mei;Jing Qiang;Guan Yiliang(Shandong Earthquake Agency,Jinan 250102,China;Rongcheng Seismic Station,Shandong Province 264300,China)
出处
《地震地磁观测与研究》
2018年第5期112-118,共7页
Seismological and Geomagnetic Observation and Research
基金
山东省地震局重点研发计划(项目编号:YF1705)
关键词
钻孔倾斜
异常变化
环境干扰
地壳应力
胶东半岛地区
borehole tilt observation
abnormal change
environment interference
crustal stress
the Jiaodong peninsula area
