| 大同地区几次中强震前后的重力变化 |
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| 引用本文： | 马丽,李家正.大同地区几次中强震前后的重力变化[J].西北地震学报,1994,16(1):33-39. |
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| 作者姓名： | 马丽 李家正 |
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| 作者单位： | 国家地震局分析预报中心，河北省地震局 |
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| 摘 要： | 本文对华北北环重力重复测量资料进行了分析研究，探讨了排除浅层干扰因素，提取与地震相关的重力变化的途径。以大同地震为例，详细分析了地震前后重力场变化，结果表明，其变化是明显的，远远超过了各项误差。
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| 关 键 词： | 流动重力测量 重力段差 山西 强震 |
| 收稿时间： | 1992/12/13 0:00:00 |
ANALYSIS ON GRAVITY CHANGE BEFORE AND AFTER SEVERAL MODERATELY STRONG EARTHQUAKES IN DATONG REGION,SHANXI |
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| Ma Li and Li Jiazheng.ANALYSIS ON GRAVITY CHANGE BEFORE AND AFTER SEVERAL MODERATELY STRONG EARTHQUAKES IN DATONG REGION,SHANXI[J].Northwestern Seismological Journal,1994,16(1):33-39. |
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| Authors: | Ma Li and Li Jiazheng |
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| Institution: | 1. Center for Analysis and Prediction. SSB, Beijing 100036;2. Seismological Bureau of Hebei Province and 1. Center for Analysis and Prediction. SSB, Beijing 100036;2. Seismological Bureau of Hebei Province |
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| Abstract: | Gravity repeated measurement had carried on Northern Loop with station distances l50-200kmof striding across the different tectonic units using LCR-G gravimeter. Shallow interference factorswere analyzed from different angles,and the gravity change relative with earthquake was discussed.This is a comparative practical research approach on earthquake precursor using gravity survey. Forexample,the data of Datong earthquake,the gravity change was exceeded each standard error beforeand after moderately strong earthquake.For studying the process of earthquake preparation,the ref-erence data were offered from the features of gravity change. |
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| Keywords: | Mobile gravity measurement Shanxi Province Strong earthquake Gravity different |
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