2008年肃南5.0级地震前的重力变化
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摘要
基于河西地区的重力观测资料,分析2008年3月30日甘肃肃南5.0级地震前重力场的时空演化特征,结果表明:该次地震前古浪-天祝-永登-海原一带,存在(-30~60)×10-8ms-2的重力异常变化。
On the basis of the mobile gravity data of Hexi area, the characters of gravity field varition before the Sunan Ms5.0 earthquakes are analysised. The results show that the gravity changes are about (-30—60)×10-8ms-2 around Gulang-Tianzhu-Yongdeng-Haiyuan before the earthquake.
On the basis of the mobile gravity data of Hexi area, the characters of gravity field varition before the Sunan Ms5.0 earthquakes are analysised. The results show that the gravity changes are about (-30—60)×10-8ms-2 around Gulang-Tianzhu-Yongdeng-Haiyuan before the earthquake.
引文
1 刘百篪,等,祁连山活动地块东北部活动构造的定量研究与大地震危险性分析[J].西北地震学报,2000,22(2):84-87.(Liu Baichi,et al.Seismic risk evaluation and quantitative study of active seismotectonics in focal mo-nitoring area on mid-east segment of qilian mountains[J].Northwestern Seismological Journal,2000,22(2):84-87)
2 祝意青,等.景泰5.9级地震前后的重力变化研究[J].中国地震,2001,17(4):356-363.(Zhu Yiqing,et al.Gravity variation research before and after JingtaiMs5.9earthquake[J].Earthquake Research,2001,17(4):356-363)
3 祝意青,胡斌,张永志.永登5.8级地震前后的重力场动态图像特征研究[J].地壳形变与地震,1999,(1):71-77.(Zhu Yiqing,Hu Bin and Zhang Yongzhi.Study of the dynamic pattern characteristics of gravity around Yongdeng earthquake[J].Crustal Deformation and Earthquake,1999,19(1):71-77)
4 梁伟锋,等.民乐Ms6.1地震前的重力变化研究[J].地震研究,2004,27(4):334-338.(Liang Weifeng,et al.The study of gravity varition before MinleMs6.1earthquake[J].J.of Seismological Research,2004,27(4):334-338)
5 祝意青,等.青藏块体东北缘重力场演化与地震活动[J].地震学报,2004,26(增刊):71-78.(Zhu Yiqng,et al.Gravity evolution and earthquake activities of the northeast-ern edge of Qinghai-Tibet block[J].Acta Seismologica Sin-ica,2004,26(Sup.):76-84)
6 祝意青,等.河西地区重力场及其动态演化特征[J].大地测量与地球动力学,2003,(4):44-48.(Zhu Yiqing,et al.Study on gravity field and its dynamic evolutional charac-teristics in Hexi area[J].Journal of Geodesy and Geodynam-ics,2003,(4):44-48)
7 祝意青,等.昆仑山口西8.1级地震前的重力变化[J].地震学报,2003,25(3):291-297.(Zhu Yiqng,et al.Grav-ity variation before Kunlun mountain pass westernMs8.1earthquake[J].Acta Seismologica Sinica,2003,25(3):291-297)
2 祝意青,等.景泰5.9级地震前后的重力变化研究[J].中国地震,2001,17(4):356-363.(Zhu Yiqing,et al.Gravity variation research before and after JingtaiMs5.9earthquake[J].Earthquake Research,2001,17(4):356-363)
3 祝意青,胡斌,张永志.永登5.8级地震前后的重力场动态图像特征研究[J].地壳形变与地震,1999,(1):71-77.(Zhu Yiqing,Hu Bin and Zhang Yongzhi.Study of the dynamic pattern characteristics of gravity around Yongdeng earthquake[J].Crustal Deformation and Earthquake,1999,19(1):71-77)
4 梁伟锋,等.民乐Ms6.1地震前的重力变化研究[J].地震研究,2004,27(4):334-338.(Liang Weifeng,et al.The study of gravity varition before MinleMs6.1earthquake[J].J.of Seismological Research,2004,27(4):334-338)
5 祝意青,等.青藏块体东北缘重力场演化与地震活动[J].地震学报,2004,26(增刊):71-78.(Zhu Yiqng,et al.Gravity evolution and earthquake activities of the northeast-ern edge of Qinghai-Tibet block[J].Acta Seismologica Sin-ica,2004,26(Sup.):76-84)
6 祝意青,等.河西地区重力场及其动态演化特征[J].大地测量与地球动力学,2003,(4):44-48.(Zhu Yiqing,et al.Study on gravity field and its dynamic evolutional charac-teristics in Hexi area[J].Journal of Geodesy and Geodynam-ics,2003,(4):44-48)
7 祝意青,等.昆仑山口西8.1级地震前的重力变化[J].地震学报,2003,25(3):291-297.(Zhu Yiqng,et al.Grav-ity variation before Kunlun mountain pass westernMs8.1earthquake[J].Acta Seismologica Sinica,2003,25(3):291-297)
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