地震地磁观测与研究
地震地磁觀測與研究
지진지자관측여연구
SEISMOLOGICAL AND GEOMAGNETIC OBSERVATION AND RESEARCH
2014年
1期
171-176
,共6页
张永奇%曹建平%郝洪涛%韩美涛
張永奇%曹建平%郝洪濤%韓美濤
장영기%조건평%학홍도%한미도
流动重力%历史资料清理%重力场变化%地震
流動重力%歷史資料清理%重力場變化%地震
류동중력%역사자료청리%중력장변화%지진
repeated gravity%historical data compilation%variation of gravity field%earth-quakes
介绍流动重力历史资料清理流程、方法及获得的规范化成果,对1998年泾阳MS 4.8、2009年高陵MS 4.4地震前后的重力场变化进行分析,得到结论:①泾阳地震前后重力场变化满足“震前重力持续增强-震后反向恢复”的特征;②泾阳地震的发生可能与附近断裂活动有关,同时受华北块体应力场的作用;③高陵地震前后重力变化与泾阳地震前后重力变化具有一定的相似性,且位于渭河断裂附近,两个地震均受到渭河断裂活动的影响。
介紹流動重力歷史資料清理流程、方法及穫得的規範化成果,對1998年涇暘MS 4.8、2009年高陵MS 4.4地震前後的重力場變化進行分析,得到結論:①涇暘地震前後重力場變化滿足“震前重力持續增彊-震後反嚮恢複”的特徵;②涇暘地震的髮生可能與附近斷裂活動有關,同時受華北塊體應力場的作用;③高陵地震前後重力變化與涇暘地震前後重力變化具有一定的相似性,且位于渭河斷裂附近,兩箇地震均受到渭河斷裂活動的影響。
개소류동중력역사자료청리류정、방법급획득적규범화성과,대1998년경양MS 4.8、2009년고릉MS 4.4지진전후적중력장변화진행분석,득도결론:①경양지진전후중력장변화만족“진전중력지속증강-진후반향회복”적특정;②경양지진적발생가능여부근단렬활동유관,동시수화북괴체응력장적작용;③고릉지진전후중력변화여경양지진전후중력변화구유일정적상사성,차위우위하단렬부근,량개지진균수도위하단렬활동적영향。
The compilation process and the method of the repeated gravity historical data,as well as the standardized gravity results obtained are introduced.On this basis,the gravity field vari-ation before and after the 1998 Jingyang MS 4. 8 earthquake and the 2009 Gaoling MS 4. 4 earthquake are preliminarily analyzed and some conclusions are obtained:①the gravity varia-tion before and after the Jingyang earthquake accord with the feature that the gravity contin-uous enhancement before the earthquake and reverse recovery then;②Jingyang earthquake rupture may occur with nearby fault activities,as well as affected by the North China block stress field;③the gravity variation before and after the Gaoling earthquake is similar with the Jingyang earthquake.The two earthquakes are occurred in the Weihe fault,which are affected by the impact of the Weihe fault activity.