摘要
To reveal the geometry of the seismogenic structure of the Aug. 8, 2017 M_S 7.0 Jiuzhaigou earthquake in northern Sichuan,data from the regional seismic network from the time of the main event to Oct. 31, 2017 were used to relocate the earthquake sequence by the tomoDD program, and the focal mechanism solutions and centroid depths of the M_L ≥ 3.5 events in the sequence were determined using the CAP waveform inversion method. Further, the segmental tectonic deformation characteristics of the seismogenic faults were analyzed preliminarily by using strain rosettes and areal strains(As). The results indicate:(1) The relocated M_S 7.0 Jiuzhaigou earthquake sequence displays a narrow ~ 38 km long NNW-SSE-trending zone between the NW-striking Tazang Fault and the nearly NSstriking Minjiang Fault, two branches of the East Kunlun Fault Zone. The spatial distribution of the sequence is narrow and deep for the southern segment, and relatively wide and shallow for the northern segment. The initial rupture depth of the mainshock is 12.5 km, the dominant depth range of the aftershock sequence is between 0 and 10 km with an average depth of 6.7 km. The mainshock epicenter is located in the middle of the aftershock region, showing a bilateral rupture behavior. The centroid depths of 32 M_L ≥ 3.5 events range from 3 to 12 km with a mean of about 7.3 km, consistent with the predominant focal depth of the whole sequence.(2) The geometric structure of the seismogenic fault on the southern section of the aftershock area(south of the mainshock) is relatively simple, with overall strike of ~150° and dip angle ~75°, but the dip angle and dip-orientation exhibit some variation along the segment. The seismogenic structure on the northern segment is more complicated; several faults, including the Minjiang Fault, may be responsible for the aftershock activities. The overall strike of this section is ~159° and dip angle is ~59°, illustrating a certain clockwise rotation and a smaller dip angle than the southern segment. The differences between the two segments demonstrate variation of the geometric structure along the seismogenic faults.(3) The focal mechanism solutions of 32 M_L ≥ 3.5 events in the earthquake sequence have obvious segmental characteristics. Strike-slip earthquakes are dominant on the southern segment, while 50% of events on the northern segment are thrusting and oblique thrusting earthquakes, revealing significant differences in the kinematic features of the seismogenic faults between the two segments.(4) The strain rosettes for the mainshock and the entire sequence of 31 M_L ≥ 3.5 aftershocks correspond to strike-slip type with NWW-SEE compressional white lobes and NNE-SSW extensional black lobes of nearly similar size. The strain rosette and As value of the entire sequence of 22 M_L ≥ 3.5 events on the southern segment are the same as those of the M_S 7.0 mainshock,indicating that the tectonic deformation here is strike-slip. However, the strain rosette of the entire sequence of 10 M_L ≥ 3.5 events on the northern segment show prominent white compressional lobes and small black extensional lobes, and the related As value is up to 0.52,indicating that the tectonic deformation of this segment is oblique thrusting with a certain strike-slip component. Differences between the two segments all reveal distinctly obvious segmental characteristics of the tectonic deformation of the seismogenic faults for the Jiuzhaigou earthquake sequence.
To reveal the geometry of the seismogenic structure of the Aug. 8, 2017 M_S 7.0 Jiuzhaigou earthquake in northern Sichuan,data from the regional seismic network from the time of the main event to Oct. 31, 2017 were used to relocate the earthquake sequence by the tomoDD program, and the focal mechanism solutions and centroid depths of the M_L ≥ 3.5 events in the sequence were determined using the CAP waveform inversion method. Further, the segmental tectonic deformation characteristics of the seismogenic faults were analyzed preliminarily by using strain rosettes and areal strains(As). The results indicate:(1) The relocated M_S 7.0 Jiuzhaigou earthquake sequence displays a narrow ~ 38 km long NNW-SSE-trending zone between the NW-striking Tazang Fault and the nearly NSstriking Minjiang Fault, two branches of the East Kunlun Fault Zone. The spatial distribution of the sequence is narrow and deep for the southern segment, and relatively wide and shallow for the northern segment. The initial rupture depth of the mainshock is 12.5 km, the dominant depth range of the aftershock sequence is between 0 and 10 km with an average depth of 6.7 km. The mainshock epicenter is located in the middle of the aftershock region, showing a bilateral rupture behavior. The centroid depths of 32 M_L ≥ 3.5 events range from 3 to 12 km with a mean of about 7.3 km, consistent with the predominant focal depth of the whole sequence.(2) The geometric structure of the seismogenic fault on the southern section of the aftershock area(south of the mainshock) is relatively simple, with overall strike of ~150° and dip angle ~75°, but the dip angle and dip-orientation exhibit some variation along the segment. The seismogenic structure on the northern segment is more complicated; several faults, including the Minjiang Fault, may be responsible for the aftershock activities. The overall strike of this section is ~159° and dip angle is ~59°, illustrating a certain clockwise rotation and a smaller dip angle than the southern segment. The differences between the two segments demonstrate variation of the geometric structure along the seismogenic faults.(3) The focal mechanism solutions of 32 M_L ≥ 3.5 events in the earthquake sequence have obvious segmental characteristics. Strike-slip earthquakes are dominant on the southern segment, while 50% of events on the northern segment are thrusting and oblique thrusting earthquakes, revealing significant differences in the kinematic features of the seismogenic faults between the two segments.(4) The strain rosettes for the mainshock and the entire sequence of 31 M_L ≥ 3.5 aftershocks correspond to strike-slip type with NWW-SEE compressional white lobes and NNE-SSW extensional black lobes of nearly similar size. The strain rosette and As value of the entire sequence of 22 M_L ≥ 3.5 events on the southern segment are the same as those of the M_S 7.0 mainshock,indicating that the tectonic deformation here is strike-slip. However, the strain rosette of the entire sequence of 10 M_L ≥ 3.5 events on the northern segment show prominent white compressional lobes and small black extensional lobes, and the related As value is up to 0.52,indicating that the tectonic deformation of this segment is oblique thrusting with a certain strike-slip component. Differences between the two segments all reveal distinctly obvious segmental characteristics of the tectonic deformation of the seismogenic faults for the Jiuzhaigou earthquake sequence.
引文
Aki,K.(1984).Asperities,barriers,characteristic earthquakes and strong motion prediction.J.Geophys.Res.Solid Earth,89(B7),5867-5872.https://doi.org/10.1029/JB089iB07p05867
Amelung,F.,and King,G.(1997).Large-scale tectonic deformation inferred from small earthquakes.Nature,386(6626),702-705.https://doi.org/10.1038/386702a0
An,Y.R.,Su,J.R.,Xue,Y.,Zhang,Y.Y.,Bai,L.S.,Liu,J.,He,S.L.,Yang,Z.G.,Du,G.B.,Wei,Y.L.,Wu,W.W.,Huang,C.M.,and Pan,Y.(2018).Seismologic characteristics of the 2017,Ms 7.0 Jiuzhaigou earthquake,Sichuan,China.Chinese Sci.Bull.(in Chinese),63(7),663-673.https://doi.org/10.1360/N972017-00919
Chang,L.J.,Wang,C.Y.,and Ding,Z.F.(2008).Seismic anisotropy of upper mantle in Sichuan and adjacent regions.Sci.China Ser.D Earth Sci.,51(12),1683-1693.https://doi.org/10.1007/s11430-008-0147-8
Chang,L.J.,Ding,Z.F.,and Wang,C.Y.(2016).Upper mantle anisotropy beneath the northern segment of the north-south tectonic belt in China.Chinese J.Geophys.(in Chinese),59(11),4035-4047.https://doi.org/10.6038/cjg20161109
Chen,C.Y.,Ren,J.W.,Meng,G.J.,Yang,P.X.,Xiong,R.W.,Hu,C.Z.,Su,X.N.,and Su,J.F.(2013).Division,deformation and tectonic implication of active blocks in the eastern segment of Bayan Har block.Chinese J.Geophys.(in Chinese),56(12),4125-4141.https://doi.org/10.6038/cjg20131217
Chen,S.F.,Wilson,C.J.L.,Deng Q.Q.,Zhao,X.L.,and Zhi,L.L.(1994).Active faulting and block movement associated with large earthquakes in the Min Shan and Longmen Mountains,northeastern Tibetan Plateau.J.Geophys.Res.Solid Earth,99(B12),24025-24038.https://doi.org/10.1029/94JB02132
Chen,W.,Qiao,X.J.,Liu,G.,Xiong,W.,Jia,Z.G.,Li,Y.,Wang,Y.B.,You,X.Z.,and Long F.(2018).Study on the coseismic slip model and Coulomb stress of the2017 Jiuzhaigou Ms 7.0 earthquake constrained by GNSS and inSARmeasurements.Chinese J.Geophys.(in Chinese),61(5),2122-2132.https://doi.org/10.6038/cjg2018L0613
Fang,L.H.,Wu,J.P.,Su,J.R.,Wang,M.M.,Jiang,C.,Fan,L.P.,Wang,W.L.,Wang,C.Z.,and Tan,X.L.(2018).Relocation of mainshock and aftershock sequence of the Ms 7.0 Sichuan Jiuzhaigou earthquake.Chinese Sci.Bull.(in Chinese),63(7),649-662.https://doi.org/10.1360/N972017-01184
Gao,Y.,Zhou,H.L.,Zheng,S.H.,Ma,L.,Che,S.,and Liu,W.H.(1997).Preliminary discussion on implication of determination on source depth of earthquake.Earthq.Res.China(in Chinese),13(4),321-329.
Gomberg,J.S.,Shedlock,K.M.,and Roecker,S.W.(1990).The effect of S-wave arrival times on the accuracy of hypocenter estimation.Bull.Seismol.Soc.Amer.,80(6A),1605-1628.
Han,L.B.,Cheng,J.,An,Y.R.,Fang,L.H.,Jiang,C.S.,Chen,B.,Wu,Z.L.,Liu,J.,Xu,X.W.,Liu,R.F.,Yao,Z.X.,Wang,C.Z.,and Wang,Y.S.(2018).Preliminary report on the 8 August 2017 Ms 7.0 Jiuzhaigou,Sichuan,China,earthquake.Seismol.Res.Lett.,89(2A),557-569.https://doi.org/10.1785/0220170158
Ji,L.Y.,Liu,C.J.,Xu,J.,Liu,L.,Long,F.,and Zhang,Z.W.(2017).InSARobservation and inversion of the seismogenic fault for the 2017 Jiuzhaigou Ms 7.0 earthquake in China.Chinese J.Geophys.(in Chinese),60(10),4069-4082.https://doi.org/10.6038/cjg20171032
Jones,L.M.,Han,W.B.,Hauksson,E.,Jin,A.S.,Zhang,Y.G.,and Luo,Z.L.(1984).Focal mechanisms and aftershock locations of the Songpan earthquakes of August 1976 in Sichuan,China.J.Geophys.Res.Solid Earth,89(B9),7697-7071.https://doi.org/10.1029/JB089iB09p07697
Kan,R.J.,Wang,S.J.,Huang,K.,and Song,W.(1983).Modern tectonic stress field and relative motion of intraplate block in southwestern China.Seismol.Geol.(in Chinese),5(2),79-90.
Kato,A.,Miyatake,T.,and Hirata,N.(2010).Asperity and barriers of the 2004Mid-Niigata Prefecture earthquake revealed by highly dense seismic observations.Bull.Seismol.Soc.Amer,100(1),298-306.https://doi.org/10.1785/0120090218
Li,M.J.,Shen,X.Z.,Zhang,Y.S.,Liu,X.Z.,and Mei,X.P.(2018).Fine crustal structures of northeast margin of the Tibetan Plateau and structural features of Jiuzhaigou earthquake focal area constrained by the data from a high-density seismic array.Chinese J.Geophys.(in Chinese),61(5),2075-2087https://doi.org/10.6038/cjg2018L0720
Li,Y.L.,Wang,B.S.,He,R.Z.,Zheng,H.W.,Yan,J.Y.,and Li Y.(2018).Fine relocation,mechanism,and tectonic indications of middle-small earthquakes in the Central Tibetan Plateau.Earth Planet.Phys.,2(5),406-419.https://doi.org/10.26464/epp2018038
Liang,J.H.,Sun,L.,and Liu,J.(2018).A high precision relocation study of the Ms7.0 Jiuzhaigou earthquake and the aftershocks occurred in 2017.Chinese.J.Geophys.(in Chinese),61(5),2152-2162.https://doi.org/10.6038/cjg2018L0604
Liang,S.S.,Lei,J.S.,Xu,Z.G.,Xu,X.W.,Zou,L.Y.,Liu,J.G.,and Chen,H.F.(2018).Relocation of aftershocks of the 2017 Jiuzhaigou,Sichuan,Ms 7.0earthquake and inversion for focal mechanism of the mainshock.Chinese J.Geophys.(in Chinese),61(5),2163-2175.https://doi.org/10.6038/cjg2018L0508
Long,F.,Zhang,Y.J.,Wen,X.Z.,Ni,S.D.,and Zhang,Z.W.(2010).Focal mechanism solutions of ML≥4.0 events in the Ms 6.1 Panzhihua-Huili earthquake sequence of Aug 30:2008.Chinese J.Geophys.(in Chinese),53(12),2852-2860.https://doi.org/10.3969/j.issn.0001-5733.2010.12.008
Luo,Y.,Zhao,L.,Zeng,X.F.,and Gao,Y.(2015).Focal mechanisms of the Lushan earthquake sequence and spatial variation of the stress field.Sci.China Earth Sci.,58(7),1148-1158.https://doi.org/10.1007/s11430-014-5017-y
Lu,R.Q.,Xu,X.W.,Chen,L.C.,Chen,G.H.,Yao,Q.,Sun,J.B.,Ren,J.J.,Ren,Z.K.,Xu,C.,Wei,Z.Y.,Tan,X.B.,Dong,S.P.,Shi,F.,and Wu,X.Y.(2018).Seismotectonics of the 8 August 2017 Jiuzhaigou earthquake and the threedimensional fault models in the seismic region.Seismology and Geology(in Chinese),40(1),1-11.https://doi.org/10.3969/j.issn.0253-4967.2018.01.001
Molnar,P.,and Lyon-Caent,H.(1989).Fault plane solutions of earthquakes and active tectonics of the Tibetan Plateau and its margins.Geophys.J.Int.,99(1),123-153.https://doi.org/10.1111/gji.1989.99.issue-1
Qi,Y.P.,Long,F.,Xiao,B.F.,Lu,Q.,and Jiang,P.(2018).Focal mechanism solutions and tectonic stress field characteristics of the 2017 Ms 7.0Jiuzhaigou earthquake sequence.Acta Geosci.Sin.(in Chinese),39(5),622-634.https://doi.org/10.3975/cagsb.2018.061901
Rubin,A.M.(2002).Aftershocks of microearthquakes as probes of the mechanics of rupture.J.Geophys.Res.Solid Earth,107(B7),2142.https://doi.org/10.1029/2001JB000496
Shan,B.,Zheng,Y.,Liu,C.L.,Xie,Z.J.,and Kong,J.(2017).Coseismic Coulomb failure stress changes caused by the 2017 M 7.0 Jiuzhaigou earthquake,and its relationship with the 2008 Wenchuan earthquake.Sci.China Earth Sci.,60(12),2181-2189.https://doi.org/10.1007/s11430-017-9125-2
Shan,X.J.,Qu,C.Y.,Gong,W.Y.,Zhao,D.Z.,Zhang,Y.F.,Zhang,G.H.,Song,X.G.,Liu,Y.H.,and Zhang,G.F.(2017).Coseismic deformation field of the Jiuzhaigou Ms 7.0 earthquake from Sentinel-1A InSAR data and fault slip inversion.Chinese J.Geophys.(in Chinese),60(12),4527-4536.https://doi.org/10.6038/cjg20171201
Shen,X.Z.,Yuan,X.H.,and Liu,M.(2015).Is the Asian lithosphere underthrusting beneath northeastern Tibetan Plateau?Insights from seismic receiver functions.Earth Planet.Sci.Lett.,428,172-180.https://doi.org/10.1016/j.epsl.2015.07.041
Shi,F.Q.,Shao,Z.G.,Zhan,W.,Ding,X.G.,Zhu,L.,and Li,Y.J.(2018).Numerical modeling of the shear modulus and stress state of active faults in the northeastern margin of the Tibetan Plateau.Chinese J.Geophys.(in Chinese),61(9),3651-3663.https://doi.org/10.6038/cjg2018L0631
Sun,J.B.,Yue,H.,Shen,Z.K.,Fang,L.H.,Zhan,Y.,and Sun,X.Y.(2018).The 2017Jiuzhaigou earthquake:A complicated event occurred in a young fault system.Geophys.Res.Lett.,45(5),2230-2240.https://doi.org/10.1002/2017GL076421
Tapponnier,P.,Peltzer,G.,Le Dain,A.Y.,Armijo,R.,and Cobbold,P.(1982).Propagating extrusion tectonics in Asia:New insights from simple experiments with plasticine.Geology.,10(12),611-616.https://doi.org/10.1130/0091-7613(1982)10<611:PETIAN>2.0.CO;2
Vallage,A.,Devès,M.H.,Klinger,Y.,King,G.C.P.,and Ruppert,N.A.(2014).Localized slip and distributed deformation in oblique settings:the example of the Denali fault system,Alaska.Geophys.J.Int.,197(3),1284-1298.https://doi.org/10.1093/gji/ggu100
Waldhauser,F.,and Ellsworth,W.L.(2000).A double-difference earthquake location algorithm:Method and application to the northern Hayward fault,California.Bull.Seismol.Soc.Amer,90(6),1353-1368.https://doi.org/10.1785/0120000006
Wang,X.S.,Lv,J.,Xie,Z.J.,Long,F.,Zhao,X.Y.,and Zheng,Y.(2015).Focal mechanisms and tectonic stress field in the North-South Seismic Belt of China.Chinese J.Geophys.(in Chinese),58(11),4149-4162.https://doi.org/10.6038/cjg20151122
Wang,Y.B.,Gan,W.J.,Chen,W.T.,You,X.Z.,and Lian,W.P.(2018).Coseismic displacements of the 2017 Jiuzhaigou M 7.0 earthquake observed by GNSS:Preliminary results.Chinese J.Geophys.(in Chinese),61(1),161-170.https://doi.org/10.6038/cjg2018L0611
Wen,X.Z.(2018).The 2008 Wenchuan,2013 Lushan and 2017 Jiuzhaigou earthquakes,Sichuan,in the last more than one thousand years of rupture history of the eastern margin of the Bayan Har block.Acta Seismol.Sin.(in Chinese),40(3),255-267.https://doi.org/10.11939/jass.20170211
Wu,Y.Q.,Jiang,Z.S.,Zhao,J.,Liu,X.X.,Wei,W.X.,Liu,Q.,Li,Q.,Zou,Z.Y.,and Zhang,L.(2015).Crustal deformation before the 2008 Wenchuan MS 8.0earthquake studied using GPS data.J.Geodyn.,85,11-23.https://doi.org/10.1016/j.jog.2014.12.002
Xie,Z.J.,Zheng,Y.,Yao,H.J.,Fang,L.H.,Zhang,Y.,Liu,C.L.,Wang,M.M.,Shan,B.,Zhang,H.P.,Ren,J.J.,Ji,L.Y.,and Song,M.Q.(2018).Preliminary analysis on the source properties and seismogenic structure of the 2017 Ms7.0Jiuzhaigou earthquake.Sci.China Earth Sci.,61(3),339-352.https://doi.org/10.1007/s11430-017-9161-y
Xu,L.S.,Zhang,X.,and Li,C.L.(2018).Which velocity model is more suitable for the 2017MS 7.0 Jiuzhaigou earthquake?.Earth Planet.Phys.,2,163-169.https://doi.org/10.26464/epp2018016
Xu,X.W.,Chen,G.H.,Wang Q.X.,Chen L.C.,Ren Z.K.,Xu,C.,Wei,Z.Y.,Lu,R.Q.,Tan,X.W.,Dong,S.P.,and Shi,F.(2017).Discussion on seismogenic structure of Jiuzhaigou earthquake and its implication for current strain state in the southeastern Qinghai-Tibet Plateau.Chinese J.Geophys.(in Chinese),60(10),4018-4026.https://doi.org/10.6038/cjg20171028
Yang,Y.,and Chang,L.J.(2018).Variations of shear wave splitting in the source region of the 2017 Jiuzhaigou Ms 7.0 earthquake.Chinese J.Geophys.(in Chinese),61(5),2088-2098.https://doi.org/10.6038/cjg2018M0174
Yi,G.X.,Long,F.,Wen,X.Z.,Liang,M.J.,and Wang,S.W.(2015).Seismogenic structure of the M 6.3 Kangding earthquake sequence on 22 Nov.2014,Southwestern China.Chinese J.Geophys.(in Chinese),58(4),1205-1219.https://doi.org/10.6038/cjg20150410
Yi,G.X.,Long,F.,Vallage,A.,Klinger,Y.,Liang,M.J.,and Wang,S.W.(2016).Focal mechanism and tectonic deformation in the seismogenic area of the2013 Lushan earthquake sequence,southwestern China.Chinese J.Geophys(in Chinese),59(10),3711-3731.https://doi.org/10.6038/cjg20161017
Yi,G.X.,Long,F.,Liang,M.J.,Zhang,H.P.,Zhao,M.,Ye,Y.Q.,Zhang,Z.W.,Qi,Y.P.,Wang,S.W.,Gong,Y.,Qiao,H.Z.,Wang,Z.,Qiu,G.L.,and Su,J.R.(2017a).Focal mechanism solutions and seismogenic structure of the 8 August 2017M 7.0 Jiuzhaigou earthquake and its aftershocks,northern Sichuan.Chinese J.Geophys.(in Chinese),60(10),4083-4097.https://doi.org/10.6038/cjg20171033
Yi,G.X.,Long,F.,Liang,M.J.,Zhang,Z.W.,Zhao,M.,Qi,Y.P.,Gong,Y.,Qiao,H.Z.,Wang,Z.,Wang,S.W.,and Shuai,L.R.(2017b).Seismogenic structure of the M 4.9 and M 5.1 Litang earthquakes on 23 September 2016 in southwestern China.Seismol.Geol.(in Chinese),39(5),949-963.https://doi.org/10.3969/j.issn.0253-4967.2017.05.006
Zhang,H.,Gao,Y.,Shi,Y.T.,Liu,X.F.,and Wang,Y.X.(2012).Tectonic stress analysis based on the crustal seismic anisotropy in the northeastern margin of Tibetan plateau.Chinese J.Geophys.(in Chinese),55(1),95-104.https://doi.org/10.6038/j.issn.0001-5733.2012.01.009
Zhang,H.J.,and Thurber,C.H.(2003).Double-difference tomography:the method and its application to the Hayward fault,California.Bull.Seismol.Soc.Amer.,93(5),1875-1889.https://doi.org/10.1785/0120020190
Zhang,H.J.,and Thurber,C.(2006).Development and applications of doubledifference seismic tomography.Pure Appl.Geophys.,163(2-3),373-403.https://doi.org/10.1007/s00024-005-0021-y
Zhang,X.,Feng,W.P.,Xu,L.S.,and Li,C.L.(2017).The source-process inversion and the intensity estimation of the 2017 Ms 7.0 Jiuzhaigou earthquake.Chinese J.Geophys.(in Chinese),60(10),4105-4116.https://doi.org/10.6038/cjg20171035
Zhang,Y.Q.,Li,H.L.,Wu,M.L.,and Liao,C.T.(2012).Late Cenozoic thrust and Nappe structure along the Minjiang upstream:Evidence from a drill hole.Geol.Rev.(in Chinese),58(2),215-223.https://doi.org/10.3969/j.issn.0371-5736.2012.02.003
Zhao,B.,Gao,Y.,and Ma,Y.L.(2018a).Using surface wave amplitude spectra to estimate the source depth of Sichuan Jiuzhaigou M 7.0 earthquake.Chinese Sci.Bull.(in Chinese),63(13),1223-1234.https://doi.org/10.1360/N972017-01150
Zhao,B.,Gao,Y.,Liang,J.H.,and Liu,J.(2018b).Interferometric source estimation of Sichuan Jiuzhaigou MS 7.0 earthquake..Chinese J.Geophys.(in Chinese),61(6),2292-2300.https://doi.org/10.6038/cjg2018L0599
Zhao,D.Z.,Qu,C.Y.,Shan,X.J.,Gong,W.Y.,Zhang,Y.F.,and Zhang,G.H.(2018).InSAR and GPS derived coseismic deformation and fault model of the 2017 Ms 7.0 Jiuzhaigou earthquake in the Northeast Bayanhar block.Tectonophysics,726,86-99.https://doi.org/10.1016/j.tecto.2018.01.026
Zhao,L.S.,and Helmberger,D.V.(1994).Source estimation from broadband regional seismograms.Bull.Seismol.Soc.Amer.,84(1),91-104.
Zhao,X.L.,Deng,Q.D.,and Chen,S.F.(1994).Tectonic geomorphology of the Minshan uplift in western Sichuan,southwestern China.Seismol.Geol.(in Chinese),16(4),429-439.
Zheng,X.J.,Zhang,Y.,and Wang,R.J.(2017).Estimating the rupture process of the 8 August 2017 Jiuzhaigou earthquake by inverting strong-motion data with IDS method.Chinese J.Geophys.(in Chinese),60(11),4421-4430.https://doi.org/10.6038/cjg20171128
Zheng,Y.,Ma,H.S.,Lü,J.,Ni,S.D.,Li,Y.C.,and Wei,S.J.(2009).Source mechanism of strong aftershocks(Ms≥5.6)of the 2008/05/12 Wenchuan earthquake and the implication for seismotectonics.Sci.China Ser.D Earth Sci.,52(6),739-753.https://doi.org/10.1007/s11430-009-0074-3
Zhou,R.J.,Pu,X.H.,He,Y.L.,Li,X.G.,and Ge,T.Y.(2000).Recent activity of Minjiang fault zone,uplift of Minshan block and their relationship with seismicity of Sichuan.Seismol.Geol.(in Chinese),22(3),285-294.https://doi.org/10.3969/j.issn.0253-4967.2000.03.009
Zhu,L.P.,and Helmberger,D.V.(1996).Advancement in source estimation techniques using broadband regional seismograms.Bull.Seismol.Soc.Amer.86(5),1634-1641.