中国大陆余震活动深度分布及其流变学机制
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摘要
本文研究了中国大陆1966年以来发生的5次大地震(Ms≥7.0)的余震活动深度与地热流的关系。研究表明:地热流较高的震源区,余震活动深度分布较浅,并且得出余震深度分布受地壳内部岩石脆性-韧性转变深度的流变学特征控制的推论。
The relationship between aftershock depths and surface heat flow in the source areas of five great earthquakes (Ms>7. 0) in China mainland has been studied in the paper, it shows that the higher the surface heat flow, the more shallow the aftershock depths , and distribution of aftershock depths are under the control of the rheological mecha -nism of the rock brittle-ductile transition in the crust.
The relationship between aftershock depths and surface heat flow in the source areas of five great earthquakes (Ms>7. 0) in China mainland has been studied in the paper, it shows that the higher the surface heat flow, the more shallow the aftershock depths , and distribution of aftershock depths are under the control of the rheological mecha -nism of the rock brittle-ductile transition in the crust.
引文
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国家地震局“深部物探成果”编写组,1986,中国地壳上地幔地球物理探测成果,58,204,地震出版社,北京。
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河北省地震局,1980,唐山地震目录,地震出版社,北京。
胡鸿翔、陆涵行、王椿庸、何正勤、朱良保、颜其中、樊跃新、张国庆、邓英娥,1986,滇西地区地壳结构的爆破地震研究,地球物理学报,Vol.29,No.2,133-144。
姜葵主编,1993,1988年云南澜沧-耿马地震,363-383,云南大学出版社,昆明。
王安东、任玉河、孙文福、于龙伟、梁镜铭、曹天青、顾浩鼎,1986,辽东地区和海城地区的地热观测,东北地震研究,Vol.2,No.2,19-27。
汪辑安、徐青、张文仁,1990,云南大地热流及地热地质问题,地震地质,Vol.12,No.4,367-377。
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朱凤鸣、吴戈,1982,一九七五年海城地震,地震出版社,185-220,北京。
Byerlee,J.,1978,Friction of rock,PAGEOPH,Vol.116,615-626．
Ito,K.,1990,Regional variations of the cutoff depth of seismicity in the crust and their relation to heat flow and large inland-earthquakes,J.Phys,Earth,Vol.38,223-250．
Kobayashi,Y.,1977,A relationship between the distribution of focal depth of micro-earthquakes and surface heat flow in the southwestern Japan and central Japan,Proc,Symp,Earthquake Pred,Res,(1976) ,National Committee of Geophysics and Seismological Society of Japan,184-193．
Sibson,R.H.,1974,Frictional constraints on thrust,wrench and normal faults,Nature,Vol.249,542-545．
Sibson,R.H.,1982,Fault zone models,heat flow and the depth distribution of earthquakes in the continental crust of the United States,Bull,Seismol,Soc,Am,Vol.72,151-163．
Strehlau,J.,1980,A discussion of the depth extent of rupture in large continental earthquakes,Earthquake Source Mechanics(Edited by Das,S,Boatwright,J.and Scholz,C.H),Geophysical Monograph 37,131-146,AGU.
Weertman,J.,1970,The creep strength of the earth's mantle,Rev,Geophys,Space Phys,Vol.8,145-168．
国家地震局“深部物探成果”编写组,1986,中国地壳上地幔地球物理探测成果,58,204,地震出版社,北京。
河北省地震局,1976,邢台地震目录,地震出版社,北京。
河北省地震局,1980,唐山地震目录,地震出版社,北京。
胡鸿翔、陆涵行、王椿庸、何正勤、朱良保、颜其中、樊跃新、张国庆、邓英娥,1986,滇西地区地壳结构的爆破地震研究,地球物理学报,Vol.29,No.2,133-144。
姜葵主编,1993,1988年云南澜沧-耿马地震,363-383,云南大学出版社,昆明。
王安东、任玉河、孙文福、于龙伟、梁镜铭、曹天青、顾浩鼎,1986,辽东地区和海城地区的地热观测,东北地震研究,Vol.2,No.2,19-27。
汪辑安、徐青、张文仁,1990,云南大地热流及地热地质问题,地震地质,Vol.12,No.4,367-377。
张汝惠、武冀新、张晚霞,1991,辽南南部的大地热流及岩石层热结构,中国地震,Vol.7,No.3,11-24。
张汝惠、赵国泽,1993,河北邢束地区地壳上地幔的热作用,中国地震,Vol.9,No.3,235-245。
朱凤鸣、吴戈,1982,一九七五年海城地震,地震出版社,185-220,北京。
Byerlee,J.,1978,Friction of rock,PAGEOPH,Vol.116,615-626．
Ito,K.,1990,Regional variations of the cutoff depth of seismicity in the crust and their relation to heat flow and large inland-earthquakes,J.Phys,Earth,Vol.38,223-250．
Kobayashi,Y.,1977,A relationship between the distribution of focal depth of micro-earthquakes and surface heat flow in the southwestern Japan and central Japan,Proc,Symp,Earthquake Pred,Res,(1976) ,National Committee of Geophysics and Seismological Society of Japan,184-193．
Sibson,R.H.,1974,Frictional constraints on thrust,wrench and normal faults,Nature,Vol.249,542-545．
Sibson,R.H.,1982,Fault zone models,heat flow and the depth distribution of earthquakes in the continental crust of the United States,Bull,Seismol,Soc,Am,Vol.72,151-163．
Strehlau,J.,1980,A discussion of the depth extent of rupture in large continental earthquakes,Earthquake Source Mechanics(Edited by Das,S,Boatwright,J.and Scholz,C.H),Geophysical Monograph 37,131-146,AGU.
Weertman,J.,1970,The creep strength of the earth's mantle,Rev,Geophys,Space Phys,Vol.8,145-168．
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