印尼M_S8.7地震对中国大陆3次后续中强地震的动应力触发研究
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摘要
印尼8.7级地震发生后,在不到2个月时间内,在中国大陆相继发生了3次后续中强地震(2004年12月26日云南双柏MS5.1地震、2005年1月26日云南思茅MS5.1地震、2005年2月15日新疆乌什MS6.2地震),印尼地震和这3次后续地震是否存在触发关系?计算了印尼地震在3次后续地震破裂面上的动库仑应力变化和静库仑应力变化。静应力变化量小,低于一般认为的触发阈值(0.01 MPa);动应力变化峰值为10-1MPa,可能是这3次后续地震的触发因素。
In two months after Indonesia M_S8.7 earthquake,three moderately strong earthquakes(December 26,2004 M_S5.1 Shuangbai earthquake,January 26,2005 M_S5.1 Simao earthquake and February 15,2005 M_S6.2 Wushi earthquake) occurred in China' mainland.Is there triggering relation between Indonesia M_S8.7 Earthquake and the three subsequent earthquakes? In this article we calculate the static and dynamic Coulomb stress changes in failure planes of the three subsequent earthquakes for Indonesia M_S8.7 Earthquake.The value of static stress change is smaller than the threshold one of triggering value(0.01 MPa);The peak change of dynamic stress is about 10~(-1) MPa.So the change of dynamic stress is probably the triggering factor of the three subsequent earthquakes.
In two months after Indonesia M_S8.7 earthquake,three moderately strong earthquakes(December 26,2004 M_S5.1 Shuangbai earthquake,January 26,2005 M_S5.1 Simao earthquake and February 15,2005 M_S6.2 Wushi earthquake) occurred in China' mainland.Is there triggering relation between Indonesia M_S8.7 Earthquake and the three subsequent earthquakes? In this article we calculate the static and dynamic Coulomb stress changes in failure planes of the three subsequent earthquakes for Indonesia M_S8.7 Earthquake.The value of static stress change is smaller than the threshold one of triggering value(0.01 MPa);The peak change of dynamic stress is about 10~(-1) MPa.So the change of dynamic stress is probably the triggering factor of the three subsequent earthquakes.
引文
[1]Harris R A.Introduction to special section:Stress triggers,stress shadows,and implications forseismic hazard[J].J Geophys Res,1998,103:24 347-24 358.
[2]Steacy S,Gomberg J,Cocco M.Introduction to special section:Stress transfer,earthquake trigge-ring,and time-dependent seismic hazard[J].J Geophys Res,2005,Vol 110,B05S01,doi:10.1029/2005JB003692.
[3]Marone C.Shaking faults loose[J].Nature,2000,408:533-535.
[4]Hill D P,Reasenberg P A,Micchael A,et al.Seismicity remotely triggred by the magnitude 7.3Landers,California,earthquake[J].Science,1993,260:1 617-1 623.
[5]Cotton F,Coutant O.Dynamic stress variations due to shear faults in a plane-layered medium[J].Geophy J Int,1997,128:676-688.
[6]Vidale J E,Agnew D,Johnston M,et al.Absence of earthquake correlation with each tides:An in-dications of high preseismic fault stress rate[J].J Geophy Res,1998,103(B10):24 567-24 572.
[7]Hill D P,Reasenberg P A,Micchael A,et al.Seismicity remotely triggred by the magnitude 7.3Landers,California,earthquake[J].Science,1993,260:1 617-1 623.
[8]Brodsky E E,KaraKostas V,Kanamori H.A new observation of dynamically triggered regionalseismicity:earthquake in Greece following the August,1999 Izmit,Turkey earthquake[J].GeophysRes Let,2000,27:2 741-2 744.
[9]Mahamad R.Remote earthquake triggering alone the Dead Sea Fault in Syria following the 1995 Gulfof Aqaba earthquake(MS=7.3)[J].Seismol Res Lett,2000,71:47-52.
[10]Gomberg J,Ressenberg P A,Bodin P,et al.Earthquake triggering by seismic waves folling theLanders and Hector Mine earthquakes[J],Nature,2001,411:462-466.
[11]Wen K L,Beresnev I A,Cheng S N.Moderatemagnitude seismicity remotely triggered in the Tai-wan region by large earthquakes around in Philippine Sea Plate[J].Bull Seism Soc Amer,1996,86:843-847.
[12]Kanamori H.Relation between tectonic stress,greate earthquake and earthquake swarms[J].Tect-tonophysics,1972,14:1-12.
[13]Protti M,McNally K,Pacheco J,et al.The March 25,1990(MW=7.0,ML=6.8),earthquake atthe entrance of Nicoya Gulf,Costa Rica:its prior activity,forshocks and triggered seismicity[J].JGeophys Res,1995,100:20 345-20 358.
[14]Kilb D,Gomberg J,Bodin P.Triggering of earthquake aftershocks by dynamic stresses[J].Nature,2000,408:570-574.
[15]Stein S,Okal E.Speed and size of the Sumatra earthquake[J].Nature,2005,434:891-892.
[16]Ni S,Kanamori H,Helmberger D.Energy radiation from the Sumatra earthquake[J].Nature,2005,434:892-892.
[17]Kennette B L,Kerry N J.Seismic waves in a stratified half space[J].Geophys J R astr Soc,1979,57:557-583.
[18]Bouchon M.A simple method to calculate Green′s function for layered media[J].Bull Seism SocAm,1981,71:959-971.
[19]Müller G.The reflectivity method:a tutorial[J].J Geophys,1985,58:153-174
[20]Belardinelli M E,Cocco M,Coutant O,et al.Redistribution of dynamic stress during coseismic rup-ture:evidence for fault interaction and earthquake triggering[J].J Geophys Res,1999,104:14 925-14 945.
[21]Simpson R W,Reasenberg P A.Earthquake-induced static stress changes on central California faults[A].In:Simpson R W eds.The Loma Prieta,California Earthquake of October 17,1989-Tectonicprocesses and models[C].U S Geol Surv Prof Pap,1994,F55-F89.
[22]Rice J R,Cleary M P.Some basic stress diffusion solutions for fluid saturated elastic porous mediawith compressible constituents[J].Rev Geophys,1976,14:227-241.
[23]Cocco M,Rice J R.Pore pressure and poreelasticity effects in Coulomb stress analysis of earthquakeinteraction[J].J Geophys Res,2002,107,10,ESE 2,Feb.
[24]King G C P,R S Stein,Lin J.Static stress changes and the triggering of earthquakes[J].Bull SeismSoc Amer,1994,84:935-953.
[25]Nostro C,Cocco M,Belardinelli M E.Static stress changes in extensional regimes:an application tosouthern Appennines(Italy)[J].Bull Seism Soc Am,1997,87:234-248.
[26]Ishii M,Shearer P M,Houston H,et al.Extent,duration and speed of the 2004 Sumatra-Andamanearthquake imaged by the Hi-Net array[J].Nature,2005,434:933-936.
[27]Ammon C J,Chen J,Thio H K,et al.Rupture process of the 2004 Sumatra-Andaman earthquake[J].Science,2005,308:1 133-1 139.
[28]Park J,Song T R A,Tromp J,et al.Earth′s free oscillations excited by the 26 December 2004 Su-matra-Andaman earthquake[J].Science,2005,308:1 139-1 144.
[29]Lay T,Kanamori H,Ammon C,et al.The great Sumatra-Andaman earthquake of 26 December2004[J].Science,2005,308:1 127-1 132.
[30]Kennett B L,Engdahl E R,Buland R.Constraints on seismic velocities in the Earth from travel-times[J].Geophys J Int,1995,1 22:108-124.
[2]Steacy S,Gomberg J,Cocco M.Introduction to special section:Stress transfer,earthquake trigge-ring,and time-dependent seismic hazard[J].J Geophys Res,2005,Vol 110,B05S01,doi:10.1029/2005JB003692.
[3]Marone C.Shaking faults loose[J].Nature,2000,408:533-535.
[4]Hill D P,Reasenberg P A,Micchael A,et al.Seismicity remotely triggred by the magnitude 7.3Landers,California,earthquake[J].Science,1993,260:1 617-1 623.
[5]Cotton F,Coutant O.Dynamic stress variations due to shear faults in a plane-layered medium[J].Geophy J Int,1997,128:676-688.
[6]Vidale J E,Agnew D,Johnston M,et al.Absence of earthquake correlation with each tides:An in-dications of high preseismic fault stress rate[J].J Geophy Res,1998,103(B10):24 567-24 572.
[7]Hill D P,Reasenberg P A,Micchael A,et al.Seismicity remotely triggred by the magnitude 7.3Landers,California,earthquake[J].Science,1993,260:1 617-1 623.
[8]Brodsky E E,KaraKostas V,Kanamori H.A new observation of dynamically triggered regionalseismicity:earthquake in Greece following the August,1999 Izmit,Turkey earthquake[J].GeophysRes Let,2000,27:2 741-2 744.
[9]Mahamad R.Remote earthquake triggering alone the Dead Sea Fault in Syria following the 1995 Gulfof Aqaba earthquake(MS=7.3)[J].Seismol Res Lett,2000,71:47-52.
[10]Gomberg J,Ressenberg P A,Bodin P,et al.Earthquake triggering by seismic waves folling theLanders and Hector Mine earthquakes[J],Nature,2001,411:462-466.
[11]Wen K L,Beresnev I A,Cheng S N.Moderatemagnitude seismicity remotely triggered in the Tai-wan region by large earthquakes around in Philippine Sea Plate[J].Bull Seism Soc Amer,1996,86:843-847.
[12]Kanamori H.Relation between tectonic stress,greate earthquake and earthquake swarms[J].Tect-tonophysics,1972,14:1-12.
[13]Protti M,McNally K,Pacheco J,et al.The March 25,1990(MW=7.0,ML=6.8),earthquake atthe entrance of Nicoya Gulf,Costa Rica:its prior activity,forshocks and triggered seismicity[J].JGeophys Res,1995,100:20 345-20 358.
[14]Kilb D,Gomberg J,Bodin P.Triggering of earthquake aftershocks by dynamic stresses[J].Nature,2000,408:570-574.
[15]Stein S,Okal E.Speed and size of the Sumatra earthquake[J].Nature,2005,434:891-892.
[16]Ni S,Kanamori H,Helmberger D.Energy radiation from the Sumatra earthquake[J].Nature,2005,434:892-892.
[17]Kennette B L,Kerry N J.Seismic waves in a stratified half space[J].Geophys J R astr Soc,1979,57:557-583.
[18]Bouchon M.A simple method to calculate Green′s function for layered media[J].Bull Seism SocAm,1981,71:959-971.
[19]Müller G.The reflectivity method:a tutorial[J].J Geophys,1985,58:153-174
[20]Belardinelli M E,Cocco M,Coutant O,et al.Redistribution of dynamic stress during coseismic rup-ture:evidence for fault interaction and earthquake triggering[J].J Geophys Res,1999,104:14 925-14 945.
[21]Simpson R W,Reasenberg P A.Earthquake-induced static stress changes on central California faults[A].In:Simpson R W eds.The Loma Prieta,California Earthquake of October 17,1989-Tectonicprocesses and models[C].U S Geol Surv Prof Pap,1994,F55-F89.
[22]Rice J R,Cleary M P.Some basic stress diffusion solutions for fluid saturated elastic porous mediawith compressible constituents[J].Rev Geophys,1976,14:227-241.
[23]Cocco M,Rice J R.Pore pressure and poreelasticity effects in Coulomb stress analysis of earthquakeinteraction[J].J Geophys Res,2002,107,10,ESE 2,Feb.
[24]King G C P,R S Stein,Lin J.Static stress changes and the triggering of earthquakes[J].Bull SeismSoc Amer,1994,84:935-953.
[25]Nostro C,Cocco M,Belardinelli M E.Static stress changes in extensional regimes:an application tosouthern Appennines(Italy)[J].Bull Seism Soc Am,1997,87:234-248.
[26]Ishii M,Shearer P M,Houston H,et al.Extent,duration and speed of the 2004 Sumatra-Andamanearthquake imaged by the Hi-Net array[J].Nature,2005,434:933-936.
[27]Ammon C J,Chen J,Thio H K,et al.Rupture process of the 2004 Sumatra-Andaman earthquake[J].Science,2005,308:1 133-1 139.
[28]Park J,Song T R A,Tromp J,et al.Earth′s free oscillations excited by the 26 December 2004 Su-matra-Andaman earthquake[J].Science,2005,308:1 139-1 144.
[29]Lay T,Kanamori H,Ammon C,et al.The great Sumatra-Andaman earthquake of 26 December2004[J].Science,2005,308:1 127-1 132.
[30]Kennett B L,Engdahl E R,Buland R.Constraints on seismic velocities in the Earth from travel-times[J].Geophys J Int,1995,1 22:108-124.
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