海南岛陆重力场演化特征研究  

Study on the Evolution Characteristic of Gravity Field in Hainan Island

作　　者：李盛[1] 王赵清 李砚[1] 陈维超[1] 

机构地区：[1]海南省地震局,海口570203

出　　处：《华南地震》2016年第2期70-76,共7页South China Journal of Seismology

基　　金：中国地震局地震科技星火计划(XH15034Y);中国地震局监测;预报;科研三结合课题(152102)

摘　　要：对2003—2014年共18期海南岛陆流动重力复测资料进行系统整理和处理,分别从重力场时空变化角度分析了海南岛陆重力场累积变化和重点地区测点重力点值时序变化,以认识海南岛陆重力场演化特征;并重点研究了海南陵水近海2004年7月9日M_L4.1级、7月30日M_L级4.3双震和2012年11月5日万宁近海M_L4.1级地震前后附近地区测点重力点值时序变化,发现上述地震前后海南岛陆重力场均无异常变化。The paper processes a total of 18 mobile gravity retest data of Hainan Island from 2003 to 2014, and analyzes the cumulative changes of gravity field and the timing variations of gravity point value of measuring points in key areas from the perspective of time and space changes of gravity field, to recognize the gravity field evolution of Hainan Island. The paper focuses on the timing variations of gravity point value of measuring points before and after the M_L4.1 earthquake on July 9th, 2004, M_L4.3 double earthquakes on July 30 th, 2004 in Lingshui offshore and M_L4.1 earthquake on November 5th, 2012 in Wanning offshore, and the results show that there is no abnormal changes of the gravity field of Hainan Island before and after the above earthquakes.

关 键 词：重力场 断裂带 重力点值 地震 异常 

分 类 号：P315.6[天文地球—地震学]