四川芦山7.0级强震:一次典型的盲逆断层型地震
摘要
芦山地震区发育着龙门山推覆构造带南段大邑隐伏断裂、双石-大川断裂、盐井-五龙断裂、耿达-陇东断裂等活动断层.地震现场应急科学考察表明,沿这些活动断层及其邻近地段没有发现明显的地震地表破裂带,地表可见到一些脆性水泥路面挤压破裂现象,说明在双石镇、太平镇、龙门乡、隆兴乡等地存在着NW-SE向局部的地壳缩短,结合余震的空间分布特征、震源机制解等资料,推测芦山地震属典型的盲逆断层型地震.龙门山推覆构造带尚未发生历史地震破裂的地震空段应引起有关部门高度重视.
引文
1Dong S,Zhang Y,Wu Z,et al.Surface rupture and co-seismic displacement produced by the Ms8.0Wenchuan earthquake of May12th,2008,Sichuan,China:Eastwards growth of the Qinghai-Tibet Plateau.Acta Geol Sin,2008,82:801–840
2徐锡伟,闻学泽,叶建青,等.汶川Ms8.0地震地表破裂带及其发震构造.地震地质,2008,30:597–629
3Xu X W,Wen X Z,Yu G H,et al.Coseismic reverse-and oblique-slip surface faulting generated by the2008Mw7.9Wenchuan earth-quake,China.Geology,2009,37:515–518
4Yu G,Xu X,Klinger Y,et al.Fault-scarp features and cascading-rupture model for the Wenchuan earthquake(Mw7.9),eastern TibetanPlateau,China.Bull Seismol Soc Am,2010,100:2590–2614
5Parsons T,Ji C,Kirby E.Stress changes from the2008Wenchuan earthquake and increased hazard in the Sichuan basin.Nature,2008,454:509–510
6Toda S,Lin J,Meghraoui M,et al.12May2008M=7.9Wenchuan,China,earthquake calculated to increase failure stress and seismicityrate on three major fault systems.Geophys Res Lett,2008,35:L17305,doi:10.1029/2008GL034903
7潘希,冯丽妃.龙门山为何如此不安?中国科学报,2013,5785期,第一版
8邓起东,张培震,冉勇康,等.中国活动构造基本特征.中国科学D辑:地球科学,2002,32:1020–1030
9陈国光,计凤桔,周荣军,等.龙门山断裂带晚第四纪活动性分段的初步研究.地震地质,2007,29:657–673
10徐锡伟,闻学泽,陈桂华,等.巴颜喀拉地块东部龙日坝断裂带的发现及其大地构造意义.中国科学D辑:地球科学,2008,38:529–542
11邓起东,陈社发,赵小麟.龙门山及其邻区的构造和地震活动及动力学.地震地质,1994,16:389–403
12赵小麟,邓起东,陈社发.龙门山逆断裂带中段的构造地貌学研究.地震地质,1994,16:422–428
13Densmore A L,Ellis M A,Li Y,et al.Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau.Tectonics,2007,26:TC4005,doi:10.1029/2006TC001987
14Avouac J P,Tapponnier P.Kinematic model of active deformation in Central Asia.Geophys Res Lett,1993,20:895
15林茂炳,吴山.龙门山推覆构造带变形特征.成都地质学院学报,1991,18:46–55
16Hubbard J,Shaw J H.Uplift of the Longmen Shan and Tibetan Plateau,and the2008Wenchuan(Mw7.9)earthquake.Nature,2009,458:197–197
17King R W,Shen F,Burchfiel B,et a1.Geodetic measurement of crustal motion in Southwest China.Geology,1997,25:179–182
18Zhang P Z,Shen Z K,Wang M,et al.Continuous deformation of the Tibetan Plateau from global positioning system data.Geology,2004,32:809–812
19Shen Z,Lu J,Wang M,et al.Contemporary crustal deformation around the southeast borderland of the Tibetan Plateau.J Geophys Res,2005,110:1–17
20Meade B J.Present-day kinematics at the India-Asia collision zone.Geology,2005,35:81
21Burchfiel B C,Royden L H,van der Hilst R D,et al.A geological and geophysical context for the Wenchuan earthquake of12May2008,Sichuan,People’s Republic of China.GSA Today,2008,18,doi:10.1130/GSATG18A.1
22王小亚,朱文耀,符养,等.GPS监测的中国及其周边现时地壳形变.地球物理学报,2002,45:198–209
23Royden L H,Burchfiel B C,King R W,et al.Surface deformation and lower crustal flow in eastern Tibet.Science,1997,294:1671–1677
24Tapponnier P,Xu Z,Roger F,et al.Oblique stepwise rise and growth of the Tibet Plateau.Science,2001,294:1671–1677
25Zhang P,Wen X,Shen Z,et al.Oblique,high-angle,listric-reserve faulting and associated devement of strain:The Wenchuan earthquakeof May12,2008,Sichuan,China.Annu Rev Earth Planet Sci,2010,38:353–382
26Yeats R S,Sieh K,Allen C R.The Geology of Earthquake.Oxford:Oxford University Press,1997.568
27Stein R,King G.Seismic potential revealed by surface folding:1983Colifornia,earthquake.Science,1984,224:869–872
28Stein R,Yeats R S.Hidden earthquakes.Sci Am,1989,260:48–57
29King G,Vita-Finzi C.Active folding in the Algerian earthquake of10October1980.Nature,1981,292:22–26
30张培震,邓起东,徐锡伟,等.盲断裂,褶皱地震与新疆1906年玛纳斯地震.地震地质,1994,16:193–204
31Heaton T H,Hall J F,Wald D J,et al.Response of high-rise and base-isolated buildings to a hypothetical Mw7.0blind thrust earthquake.Science,1995,13:206–211
32王卫民,郝金来,姚振兴.2013年4月20日四川芦山地震震源破裂过程反演初步结果.地球物理学报,2013,56:1412–1417
33刘超,许力生,陈运泰.2013年4月20日四川雅安市芦山县Ms7.0地震.http://www.cea-igp.ac.cn/upload/Image/mrtp/tpxw/2013n/2013n4r/2669133725.jpg
34Walhduaser F,Ellsworth W.A double-difference earthquake location algorithm:Method and application to the northern Hayward fault.Bull Seismol Soc Amer,2003,90:1353–1368
2徐锡伟,闻学泽,叶建青,等.汶川Ms8.0地震地表破裂带及其发震构造.地震地质,2008,30:597–629
3Xu X W,Wen X Z,Yu G H,et al.Coseismic reverse-and oblique-slip surface faulting generated by the2008Mw7.9Wenchuan earth-quake,China.Geology,2009,37:515–518
4Yu G,Xu X,Klinger Y,et al.Fault-scarp features and cascading-rupture model for the Wenchuan earthquake(Mw7.9),eastern TibetanPlateau,China.Bull Seismol Soc Am,2010,100:2590–2614
5Parsons T,Ji C,Kirby E.Stress changes from the2008Wenchuan earthquake and increased hazard in the Sichuan basin.Nature,2008,454:509–510
6Toda S,Lin J,Meghraoui M,et al.12May2008M=7.9Wenchuan,China,earthquake calculated to increase failure stress and seismicityrate on three major fault systems.Geophys Res Lett,2008,35:L17305,doi:10.1029/2008GL034903
7潘希,冯丽妃.龙门山为何如此不安?中国科学报,2013,5785期,第一版
8邓起东,张培震,冉勇康,等.中国活动构造基本特征.中国科学D辑:地球科学,2002,32:1020–1030
9陈国光,计凤桔,周荣军,等.龙门山断裂带晚第四纪活动性分段的初步研究.地震地质,2007,29:657–673
10徐锡伟,闻学泽,陈桂华,等.巴颜喀拉地块东部龙日坝断裂带的发现及其大地构造意义.中国科学D辑:地球科学,2008,38:529–542
11邓起东,陈社发,赵小麟.龙门山及其邻区的构造和地震活动及动力学.地震地质,1994,16:389–403
12赵小麟,邓起东,陈社发.龙门山逆断裂带中段的构造地貌学研究.地震地质,1994,16:422–428
13Densmore A L,Ellis M A,Li Y,et al.Active tectonics of the Beichuan and Pengguan faults at the eastern margin of the Tibetan Plateau.Tectonics,2007,26:TC4005,doi:10.1029/2006TC001987
14Avouac J P,Tapponnier P.Kinematic model of active deformation in Central Asia.Geophys Res Lett,1993,20:895
15林茂炳,吴山.龙门山推覆构造带变形特征.成都地质学院学报,1991,18:46–55
16Hubbard J,Shaw J H.Uplift of the Longmen Shan and Tibetan Plateau,and the2008Wenchuan(Mw7.9)earthquake.Nature,2009,458:197–197
17King R W,Shen F,Burchfiel B,et a1.Geodetic measurement of crustal motion in Southwest China.Geology,1997,25:179–182
18Zhang P Z,Shen Z K,Wang M,et al.Continuous deformation of the Tibetan Plateau from global positioning system data.Geology,2004,32:809–812
19Shen Z,Lu J,Wang M,et al.Contemporary crustal deformation around the southeast borderland of the Tibetan Plateau.J Geophys Res,2005,110:1–17
20Meade B J.Present-day kinematics at the India-Asia collision zone.Geology,2005,35:81
21Burchfiel B C,Royden L H,van der Hilst R D,et al.A geological and geophysical context for the Wenchuan earthquake of12May2008,Sichuan,People’s Republic of China.GSA Today,2008,18,doi:10.1130/GSATG18A.1
22王小亚,朱文耀,符养,等.GPS监测的中国及其周边现时地壳形变.地球物理学报,2002,45:198–209
23Royden L H,Burchfiel B C,King R W,et al.Surface deformation and lower crustal flow in eastern Tibet.Science,1997,294:1671–1677
24Tapponnier P,Xu Z,Roger F,et al.Oblique stepwise rise and growth of the Tibet Plateau.Science,2001,294:1671–1677
25Zhang P,Wen X,Shen Z,et al.Oblique,high-angle,listric-reserve faulting and associated devement of strain:The Wenchuan earthquakeof May12,2008,Sichuan,China.Annu Rev Earth Planet Sci,2010,38:353–382
26Yeats R S,Sieh K,Allen C R.The Geology of Earthquake.Oxford:Oxford University Press,1997.568
27Stein R,King G.Seismic potential revealed by surface folding:1983Colifornia,earthquake.Science,1984,224:869–872
28Stein R,Yeats R S.Hidden earthquakes.Sci Am,1989,260:48–57
29King G,Vita-Finzi C.Active folding in the Algerian earthquake of10October1980.Nature,1981,292:22–26
30张培震,邓起东,徐锡伟,等.盲断裂,褶皱地震与新疆1906年玛纳斯地震.地震地质,1994,16:193–204
31Heaton T H,Hall J F,Wald D J,et al.Response of high-rise and base-isolated buildings to a hypothetical Mw7.0blind thrust earthquake.Science,1995,13:206–211
32王卫民,郝金来,姚振兴.2013年4月20日四川芦山地震震源破裂过程反演初步结果.地球物理学报,2013,56:1412–1417
33刘超,许力生,陈运泰.2013年4月20日四川雅安市芦山县Ms7.0地震.http://www.cea-igp.ac.cn/upload/Image/mrtp/tpxw/2013n/2013n4r/2669133725.jpg
34Walhduaser F,Ellsworth W.A double-difference earthquake location algorithm:Method and application to the northern Hayward fault.Bull Seismol Soc Amer,2003,90:1353–1368
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