断层之间的相互作用及其地震地质意义
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摘要
从断层间相互作用产生的同震库仑应力改变入手,提出了断层间相互作用的触震与缓震效应,探讨了断层间的相互作用对断层活动性、断层未来地震潜势及余震活动分布图像的影响。从断层间相互作用的角度分析了大陆强震准周期丛集复发行为的可能的物理机制。认为断层间的相互作用具有重大的地震地质意义,在进行断层活动习性和断层地震危险性定量评价及余震分布图像预测时,应该充分考虑断层间相互作用的影响。
Based on the concept of the change in co-seismic Coulomb stress resulting from the interaction of faults, the earthquake trigging and delaying effects of fault interaction are proposed in this paper. The influences of fault interaction on the activity and seismic potential of faults as well as the spatial distributed image of aftershocks are analyzed. From the viewpoint of fault interaction, the possible physical mechanism of the quasi-periodically clustering recurrence behavior of continental strong earthquakes is discussed. It is concluded that the fault interaction is very significant for both seismology and geology. In the quantitative assessment of fault activity and seismic potential and in the prediction of aftershock distribution, the influence of fault interaction should not be ignored.
Based on the concept of the change in co-seismic Coulomb stress resulting from the interaction of faults, the earthquake trigging and delaying effects of fault interaction are proposed in this paper. The influences of fault interaction on the activity and seismic potential of faults as well as the spatial distributed image of aftershocks are analyzed. From the viewpoint of fault interaction, the possible physical mechanism of the quasi-periodically clustering recurrence behavior of continental strong earthquakes is discussed. It is concluded that the fault interaction is very significant for both seismology and geology. In the quantitative assessment of fault activity and seismic potential and in the prediction of aftershock distribution, the influence of fault interaction should not be ignored.
引文
[1]朱志澄.构造地质学[M].武汉:中国地质大学出版社,1999.
[2]邓起东.活动断裂研究的进展与方向·活动断裂研究(1)[M].北京:地震出版社,1991.
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[7]Hashimoto M.Correlation to static stress changes associated with the Kobe earthquake:calculation of changes in Coulomb failure function and comparison with seismicity change[J].J.Seismol.Soc.Japan,1997,50:21-27.
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[13]张秋文,张培震,汪一鹏,等.断裂间相互作用及其对活动断裂地震潜势的影响初步研究·活动断裂研究(8)[M].北京,地震出版社,2001.41-49.
[14]傅征祥,刘桂萍.青藏高原北缘海原、古浪、冒马大地震间相互作用的动力学分析[J].地震地质,2001,23(1):35-42.
[15]马谨,马胜利,刘力强,等.断层相互作用型式的实验研究[J].自然科学进展,2002,12(5):503-508.
[16]张秋文,张培震,王乘,等.断层间相互作用的触震与缓震效应定量评价[J].地球学报,2004,25(4):483-488.
[17]张秋文.大陆强震复发模型与断裂间相互作用研究及其在地震预测中的应用[D].中国地震局地质研究所博士学位论文,1999.
[18]Zhang Qiuwen,Zhang Peizhen,Wang Cheng,et al.Earth-quake triggering and delaying caused by fault interaction on Xi-anshuihe fault belt,southwestern China[J].Acta Seismologica Sinica,2003,16(2):56-165.
[19]四川省地震局.一九八一年道孚地震[M].北京:地震出版社,1986.
[2]邓起东.活动断裂研究的进展与方向·活动断裂研究(1)[M].北京:地震出版社,1991.
[3]C H Scholz著.马胜利译.地震与断裂力学[M].北京:地震出版社,1996.
[4]丁国瑜.断裂分段理论与应用[M].北京:地震出版社,1994.
[5]闻学泽.活动断裂地震潜势的定量评价[M].北京:地震出版社,1995.
[6]Harris A R,Simpson R W,Reasenberg P A.Influence of static stress changes on earthquake locations in Southern California[J].Nature,1995,375:221-224.
[7]Hashimoto M.Correlation to static stress changes associated with the Kobe earthquake:calculation of changes in Coulomb failure function and comparison with seismicity change[J].J.Seismol.Soc.Japan,1997,50:21-27.
[8]Hodgkinson K M,Stein R S,King G C P.The1954Rain-bow Mountain-Fairview Peak-Dixie Valley earthquake:A trig-gered normal faulting sequence[J].J.Geophys.Res.,1996,101:25459-25471.
[9]Stein R S,Barka A A,Dieterich J H.Progressive failure on the North Anatolian fault since1939by earthquake stress triggering[J].Geophys.J.Int.,1997,128:594-604.
[10]Toda S,Stein R S,Reasenberg P A,et al.Stress transferred by the1995Mw=6.9Koba,Japan,shock:effect on aftershock and future earthquake probability[J].J.Geophys.Res.,1998,103,B10:24543-24565.
[11]张国民,李丽.强震成组孕育和发生过程中相互间影响的研究[J].地震,1997,17(7):221-231.
[12]刘桂萍,傅征祥.1976年7月28日唐山7.8级地震触发的区域地震活动和静应力场变化[J].地震学报,2000,22(1):17-26.
[13]张秋文,张培震,汪一鹏,等.断裂间相互作用及其对活动断裂地震潜势的影响初步研究·活动断裂研究(8)[M].北京,地震出版社,2001.41-49.
[14]傅征祥,刘桂萍.青藏高原北缘海原、古浪、冒马大地震间相互作用的动力学分析[J].地震地质,2001,23(1):35-42.
[15]马谨,马胜利,刘力强,等.断层相互作用型式的实验研究[J].自然科学进展,2002,12(5):503-508.
[16]张秋文,张培震,王乘,等.断层间相互作用的触震与缓震效应定量评价[J].地球学报,2004,25(4):483-488.
[17]张秋文.大陆强震复发模型与断裂间相互作用研究及其在地震预测中的应用[D].中国地震局地质研究所博士学位论文,1999.
[18]Zhang Qiuwen,Zhang Peizhen,Wang Cheng,et al.Earth-quake triggering and delaying caused by fault interaction on Xi-anshuihe fault belt,southwestern China[J].Acta Seismologica Sinica,2003,16(2):56-165.
[19]四川省地震局.一九八一年道孚地震[M].北京:地震出版社,1986.
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