从宏观区域场角度看地震预测
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摘要
从宏观区域场的角度出发,运用GPS资料计算的应变场、强震前震中附近中小地震和地球自转速率季节性变化的关系,以及强震前中小地震震源机制的变化三种资料,来分析汶川8.0级地震前震中附近区域场的变化。
In this paper,we discussed the variation of the macro-regional field before strong earthquakes.We used the strain field computed by GPS data,the relationship between the medium-small earthquakes around the epicenter before the strong earthquakes and seasonal variation of LOD,and the variation of the focal mechanisms of the medium-small earthquakes to analyze the changing of region field in epicenter and its surrounding area before the M8.0 Wenchuan earthquake.We hope that this research will benefit us to further understanding the relationship between earthquakes and variation of region field.
In this paper,we discussed the variation of the macro-regional field before strong earthquakes.We used the strain field computed by GPS data,the relationship between the medium-small earthquakes around the epicenter before the strong earthquakes and seasonal variation of LOD,and the variation of the focal mechanisms of the medium-small earthquakes to analyze the changing of region field in epicenter and its surrounding area before the M8.0 Wenchuan earthquake.We hope that this research will benefit us to further understanding the relationship between earthquakes and variation of region field.
引文
[1]时振梁,汪良谋,傅征祥,等.中国大陆中长期强震危险性预测方法研究[M].北京:海洋出版社,1997.
[2]安欧.地力学地震预测基础[M].北京:地震出版社,2011.
[3]刁桂苓,徐锡伟,陈于高等.汶川MW7.9和集集MW7.6地震前应力场转换现象及其可能的前兆意义[J].地球物理学报,2011,54(1):128-136.
[4]江在森,方颖,武艳强,等.汶川8.0级地震前区域地壳运动与变形动态过程[J].地球物理学报,2009,52(2):505-518.
[5]王秀文,宋美琴,杨国华,等.山西地区应力场变化与地震的关系[J].地球物理学报,2010,53(5):1127-1133.
[6]王晓山,刁桂苓,王焱,等.在地震预测研究中使用GPS和震源机制资料的问题探讨[J].地球物理学报,2011,54(11):2984-2990.
[7]David P.and Jacob S.Seismic activity,polar tides andthe chandler wobble[J].Nature,1973(245):77-81.
[8]Kanamori H.Are earthquakes a major cause of the Chan-dler wobble[J].Nature,1976(262):254-255.
[9]Gaia S and Giorgio S.Large earthquakes and Earth rota-tion:the role of mantle relaxation[J].Geophysical Re-search Letters,1999,26(7):911-914.
[10]王庆良.地壳形变-地球物理场-日长变化十年尺度相关性研究[D].北京:中国地震局地球物理研究所博士毕业论文,2003.
[11]王恒信.强震前震中附近中小地震的地球自转效应初步研究[D].北京:中国地震局地球物理研究所博士毕业论文,2012.
[2]安欧.地力学地震预测基础[M].北京:地震出版社,2011.
[3]刁桂苓,徐锡伟,陈于高等.汶川MW7.9和集集MW7.6地震前应力场转换现象及其可能的前兆意义[J].地球物理学报,2011,54(1):128-136.
[4]江在森,方颖,武艳强,等.汶川8.0级地震前区域地壳运动与变形动态过程[J].地球物理学报,2009,52(2):505-518.
[5]王秀文,宋美琴,杨国华,等.山西地区应力场变化与地震的关系[J].地球物理学报,2010,53(5):1127-1133.
[6]王晓山,刁桂苓,王焱,等.在地震预测研究中使用GPS和震源机制资料的问题探讨[J].地球物理学报,2011,54(11):2984-2990.
[7]David P.and Jacob S.Seismic activity,polar tides andthe chandler wobble[J].Nature,1973(245):77-81.
[8]Kanamori H.Are earthquakes a major cause of the Chan-dler wobble[J].Nature,1976(262):254-255.
[9]Gaia S and Giorgio S.Large earthquakes and Earth rota-tion:the role of mantle relaxation[J].Geophysical Re-search Letters,1999,26(7):911-914.
[10]王庆良.地壳形变-地球物理场-日长变化十年尺度相关性研究[D].北京:中国地震局地球物理研究所博士毕业论文,2003.
[11]王恒信.强震前震中附近中小地震的地球自转效应初步研究[D].北京:中国地震局地球物理研究所博士毕业论文,2012.
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