2007年9月苏门答腊岛近海三次大地震能量辐射源时空特征
摘要
2007年9月12～13日在苏门答腊西海域发生了3次震级分别为MW8.4,MW7.9和MW7.0的强烈地震.用全球范围内震中距在30°～90°的宽频带数字地震台的资料,借助于逆时成像技术,重新确定了这三次地震的震中位置和震源深度.利用北京首都圈数字地震台网33个宽频带数字地震台构成的"广义"台阵,借助于非平面波台阵技术,构建了这三次地震能量辐射源的时空变化图像,获得了它们的破裂持续时间、破裂尺度以及破裂速度,讨论了3次地震能量辐射源的相互关系。
引文
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12Ishii M,Shearer P,Houston H,et al.Extend,duration and speed of the2004Sumatra-Andaman earthquake imaged by the Hi-Net ar-ray.Nature,2005,435:933—936
13刘宁,陈棋福,钮凤林,等.利用初至压缩波对2004年苏门答腊-安达曼地震破裂直接成像.科学通报,2007,52(11):1312—1316
14Kikuchi M,Kanamori H.Inversion of complex body waves.Bull Seismol Soc Am,1982,72:491—506
15Ihmle P F.On the interpretation of subevents in teleseismic waveforms:The1994Bolivia deep earthquake revisited.J Geophys Res,1998,103:17919—17932
16Chen Y T,Xu L S.A time-domain inversion technique for the tempo-spatial distribution of slip on a finite fault plane with applica-tions to recent large earthquakes in the Tibetan Plateau.Geophys J Int,2000,143(2):407—416
17Xu L S,Chen Y T,Teng L,et al.Tempo-spatial rupture process of the1999,MS7.6,Chi-chi,earthquake from IRIS and GEOSCOPE long period waveform data using aftershocks as empirical Green’s functions.Bull Seismol Soc Am,2002,92(8):3210—3228
18Walker K T,Ishii M,Shearer P M.Rupture details of the28March2005Sumatra MW8.6earthquake imaged with teleseismic P waves.Geophys Res Lett,2005,32:L24303
19杜海林.2004年苏门答腊-安达曼大地震能量辐射源的时间域台阵技术分析.硕士学位论文.北京:中国地震局地球物理研究所,2007.1—87
20Larmat C,Montagner J P,Fink M,et al.Time-reversal imaging of seismic sources and application to the great Sumatra earthquake.Geophy Res Lett,2006,33:L19312
21Kennett B L N,Engdahl E R.Travel times for global earthquake location and phase identification.Geophys J Int,1991,105:429—465
22Kennett B L N,Engdahl E R,Buland R.Constraints on seismic velocities in the Earth from traveltimes.Geophys J Int,1995,122:108—124
23张红霞.2001年昆仑山大地震能量辐射源的频率域台阵技术分析.硕士学位论文.北京:中国地震局地球物理研究所,2007.1—58
2Kanamori H.Mechanism of tsunami earthquakes.Phys Earth Planet Inter,1972,6:346—359
3Fukao Y,Furumoto M.Mechanism of large earthquakes along the eastern margin of the Japan sea.Tectophysics,1975,24:247—266
4Imamura F,Shuto N.Estimate of the tsunami source of the1992Nicaraguan earthquake from tsunami data.Geophy Res Lett,1993,20(14):1515—1518
5Ide S,Imamura F,Yoshida Y,et al.Source charateristics of the Nicaraguan tsunami earthquake of September2,1992.Geophys Res Lett,1993,20:863—866
6Kanamori H,Kikuchi M.The1992Nicaragua earthquake:A slow tsunami earthquake associated with subducted sediments.Nature,1993,361:714—716
7Park J,Song T-R A,Tromp J,et al.Earth’s free oscillations excited by the26December2004Sumatra-Andaman earthquake.Science,2005,308:139—143
8Spudich P,Cranswick E.Direct observation of rupture propagation during the1979Imperial Valley,Californian,earthquake using a short baseline accelerometer array.Bull Seismol Soc Am,1984,74:2083—2094
9Goldstein P,Archuleta R J.Deterministic frequency-wavenumber methods and direct measurement of rupture during earthquake us-ing a sense array data analysis.J Geophys Res,1991,96:6187—6198
10Huang B S.Evidence for azimuthal and temporal variations of the rupture propagation of the1999Chi-Chi,Taiwan earthquake from dense seismic array observations.Geophys Res Lett,2001,28:3377—3380
11Krüger F,Ohrnberger M.Tracking the rupture of the MW=9.3Sumatra earthquake over1150km at teleseismic distance.Nature,2005,435:937—939
12Ishii M,Shearer P,Houston H,et al.Extend,duration and speed of the2004Sumatra-Andaman earthquake imaged by the Hi-Net ar-ray.Nature,2005,435:933—936
13刘宁,陈棋福,钮凤林,等.利用初至压缩波对2004年苏门答腊-安达曼地震破裂直接成像.科学通报,2007,52(11):1312—1316
14Kikuchi M,Kanamori H.Inversion of complex body waves.Bull Seismol Soc Am,1982,72:491—506
15Ihmle P F.On the interpretation of subevents in teleseismic waveforms:The1994Bolivia deep earthquake revisited.J Geophys Res,1998,103:17919—17932
16Chen Y T,Xu L S.A time-domain inversion technique for the tempo-spatial distribution of slip on a finite fault plane with applica-tions to recent large earthquakes in the Tibetan Plateau.Geophys J Int,2000,143(2):407—416
17Xu L S,Chen Y T,Teng L,et al.Tempo-spatial rupture process of the1999,MS7.6,Chi-chi,earthquake from IRIS and GEOSCOPE long period waveform data using aftershocks as empirical Green’s functions.Bull Seismol Soc Am,2002,92(8):3210—3228
18Walker K T,Ishii M,Shearer P M.Rupture details of the28March2005Sumatra MW8.6earthquake imaged with teleseismic P waves.Geophys Res Lett,2005,32:L24303
19杜海林.2004年苏门答腊-安达曼大地震能量辐射源的时间域台阵技术分析.硕士学位论文.北京:中国地震局地球物理研究所,2007.1—87
20Larmat C,Montagner J P,Fink M,et al.Time-reversal imaging of seismic sources and application to the great Sumatra earthquake.Geophy Res Lett,2006,33:L19312
21Kennett B L N,Engdahl E R.Travel times for global earthquake location and phase identification.Geophys J Int,1991,105:429—465
22Kennett B L N,Engdahl E R,Buland R.Constraints on seismic velocities in the Earth from traveltimes.Geophys J Int,1995,122:108—124
23张红霞.2001年昆仑山大地震能量辐射源的频率域台阵技术分析.硕士学位论文.北京:中国地震局地球物理研究所,2007.1—58
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