PDF Download HTML

[1]LIU Lei,ZHU Liangyu,JI Lingyun,et al.Study on the Locking Degree of the Qilian-Haiyuan Fault Zone before the 2022 Menyuan MS6.9 Earthquake and Its Seismic Risk[J].Journal of Seismological Research,2023,46(01):88-98.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0001 ]

Copy

Study on the Locking Degree of the Qilian-Haiyuan Fault Zone before the 2022 Menyuan M_S6.9 Earthquake and Its Seismic Risk

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 46 Number of periods: 2023 01 Page number: 88-98 Column: 地震地下流体监测预报理论及技术应用专栏 Public date: 2023-01-01

Title:: Study on the Locking Degree of the Qilian-Haiyuan Fault Zone before the 2022 Menyuan M_S6.9 Earthquake and Its Seismic Risk

Author(s):: LIU Lei; ZHU Liangyu; JI Lingyun; ZHUANG Wenquan; LIU Chuanjin; (The Second Crust Monitoring and Application Center,China Earthquake Administration,Xi'an 710054,Shaanxi,China)

Keywords:: the Qilian-Haiyuan Fault Zone; the Menyuan M_S6.9 Earthquake; fault locking; seismic risk; crustal deformation

CLC:: P315.2

DOI:: 10.20015/j.cnki.ISSN1000-0666.2023.0001

Abstract:: By using GPS velocity during 2015-2021 and the negative dislocation program,we inverted the locking degree and the slip rate deficit of the Qilian-Haiyuan Fault Zone.Referring to the distribution of small earthquakes in the Fault Zone,we studied the seismic anomalies before the 2022 Menyuan M_S6.9 Earthquake,and analyzed the seismic risk of each segment of the Fault Zone.The regional crustal deformation was discussed according to the fault slip rate obtained by the across-fault GPS profile.The results showed that before the Menyuan Earthquake,the seismogenic fault,the Lenglongling Fault,was firmly locked; the locking depth was 15 km,and the slip rate deficit was large,and there were a few small earthquakes.These characteristics were closely related to the medium- and strong-earthquake like the Menyuan Earthquake.The Jinqianghe Fault,the Lenglongling Fault and the eastern segment of the Tuolaishan Fault had deep locking depth,high locking degree,high slip rate deficits,and high seismic risk.Referring to the small-earthquake activity and the locking characteristics of the Lenglongling Fault before the Menyuan Earthquake,we conclude that the medium- and strong-earthquakemay occur in the eastern segment of the Tuolaishan Fault in future.In addition,the strike- slip rate of the Qilian-Haiyuan Fault Zone is between 3.9-4.3 mm/a,and the overall movement of the Fault is consistent.The compression rate(2.9 mm/a)in the western segment gradually decreased to 1 mm/a in the eastern segment.Therefore,the present crustal deformation in the northeastern margin of the Tibetan Plateau is mainly illustrated by the shortening of the Crust in the Mt.Qilianshan area and by the left-lateral,strike-slip of the Qilian-Haiyuan Fault Zone.

References:: 高伟.2018.天桥沟—黄羊川断裂晚第四纪活动特征及其构造意义[D].北京:中国地震局地质研究所.
葛伟鹏,王敏,沈正康,等.2013.柴达木—祁连山地块内部震间上地壳块体运动特征与变形模式研究[J].地球物理学报,56(9):2994-3010.
郭鹏,韩竹军,姜文亮,等.2017.青藏高原东北缘冷龙岭断裂全新世左旋滑动速率[J].地震地质,39(2):323-341.
郭鹏.2019.北祁连山冷龙岭断裂大震复发行为与危险性研究[D].北京:中国地震局地质研究所.
郝明,李煜航,秦姗兰.2017.基于GPS数据的海原—六盘山断裂带滑动速率亏损时空分布[J].地震地质,39(3):471-484.
何文贵,刘百篪,吕太乙,等.1994.老虎山断裂带的分段性研究[J].西北地震学报,16(3):66-72.
何文贵,袁道阳,葛伟鹏,等.2010.祁连山活动断裂带中东段冷龙岭断裂滑动速率的精确厘定[J].地震,30(1):131-137.
李姜一,周本刚,李铁明,等.2020.安宁河—则木河断裂带和大凉山断裂带孕震深度研究及其地震危险性[J].地球物理学报,63(10):3669-3682.
李强,江在森,武艳强,等.2014.利用GPS资料反演海原—六盘山断裂带闭锁程度与滑动亏损分布[J].武汉大学学报(信息科学版),39(5):575-580.
李煜航,崔笃信,郝明.2015.利用GPS数据反演青藏高原东北缘主要活动断裂滑动速率[J].中国地质大学学报.地球科学,40(10):1767-1780.
李振洪,韩炳权,刘振江,等.2022.InSAR数据约束下的2016年和2022年青海门源地震震源参数及其滑动分布[J].武汉大学学报(信息科学版),47(6):887-897
刘雷,蒋锋云,朱良玉.2020.南北地震带北段现今运动特征及地震活动性分析[J].地震研究,43(4):658-665.
刘云华,张迎峰,张国宏,等.2019.2016年1月21日门源M_S6.4级地震InSAR同震形变及发震构造研究[J].地球物理学进展,34(3):896-907.
叶茂盛,孟国杰,苏小宁.2018.青藏高原东北缘主要断裂闭锁特征和滑动亏损研究[J].地震,38(3):1-12.
袁道阳,刘百篪,吕太乙,等.1998.北祁连山东段活动断裂带的分段性研究[J].西北地震学报,20(4):27-34.
袁道阳,张培震,刘百篪,等.2004.青藏高原东北缘晚第四纪活动构造的几何图像与构造转换[J].地质学报,78(2):270-278.
张培震,邓起东,张国民,等.2003.中国大陆的强震活动与活动地块[J].中国科学:地球科学,33(增刊1):13-20.
张培震,邓起东,张竹琪,等.2013.中国大陆的活动断裂、地震灾害及其动力过程[J].中国科学:地球科学,43(10):1607-1620.
赵静,江在森,武艳强,等.2012.汶川地震前龙门山断裂带闭锁程度和滑动亏损分布研究[J].地球物理学报,55(9):2963-2972.
赵静,刘杰,任金卫,等.2019.汶川、芦山地震前龙门山断裂带地壳形变特征对比分析[J].地球学报,40(1):186-198.
赵静,牛安福,李强,等.2016.陇西块体周边断层闭锁程度与滑动亏损特征研[J].地震研究,39(3):351-358.
周琳,季灵运,李长军,等.2022.利用小震和GPS资料分析冷龙岭地区现今变形过程与地震活动[J].地震研究,45(3):416-423.
Altamimi Z,Rebischung P,Métivier L, et al.2016.ITRF2014:A new release of the International Terrestrial Reference Frame modeling non-linear station motions[J].Journal of Geophysical Research:Solid Earth,121(8):6109-6131.
Cavalié O,Lasserre C,Doin M P, et al.2008.Measurement of interseismic strain across the Haiyuan fault(Gansu,China),by InSAR[J].Earth Planet Sci Lett,275(3-4):246-257.
Daout S,Jolivet R,Lasserre C, et al.2016.Along-strike variations of the partitioning of convergence across the Haiyuan fault system detected by InSAR[J].Geophys J Int,205(1):536-547.
Dawers N H,Anders M H,Scholz C H.1993.Growth of normal faults:displacement length scaling[J].Geology,21(12):1107-1110.
Dewey J F,Burke K C A.1973.Tibetan Variscan and Precambrian reactivation:Products of continental collision[J].The J Geol,81(6):683-692.
Duvall A R,Clark M K.2010.Dissipation of fast strike-slip faulting within and beyond northeastern Tibet[J].Geology,38(3):223-226.
Fan L P,Li B R,Liang C, et al.2022.Precise relocation of the 2 aftershock sequences of the 2022 M6.9 Menyuan earthquake[J].Earthquake Sciecne,35(2):138-145.
Gan W J,Zhang P Z,Shen Z K, et al.2007.Present-day crustal motion within the Tibetan Plateau inferred from GPS measurements[J].Journal of Geophysical Research,112:B08416.
Gaudemer Y,Tapponnier P,Meyer B, et al.1995.Partitioning of crustal slip between linked,active faults in the eastern Qilian Shan,and evidence for a major seismic gap,the ‘Tianzhu gap',on the western Haiyuan fault,Lanzhou(China)[J].Geophys J Int,120(3):599-645.
Harkins N,Kirby E,Shi X, et al.2010.Millennial slip rates along the eastern Kunlun fault:implications for the dynamics of intracontinental deformation in Asia[J].Lithosphere,(2):247-266.
Jolivet R,Lasserre C,Doin M P, et al.2012.Shallow creep on the Haiyuan fault(Lanzhou,China)revealed by SAR interferometry[J].J Geophys Res,117(B6):137-147.
Jolivet R,Lasserre C,Doin M P, et al.2013.Spatio-temporal evolution of aseismic slip along the Haiyuan fault,China:implications for fault frictional properties[J].Earth Planet Sci Lett,377-378(2013):23-33.
Li C Y,Zhang P Z,Yin J H, et al.2009.Late Quaternary left-lateral slip rate of the Haiyuan Fault,northeastern margin of the Tibetan plateau[J].Tectonics,28(5):TC5010.
Li Y C,Shan X J,Qu C Y, et al.2016.Fault locking and slip rate deficit of the Haiyuan-Liupanshan fault zone in the northeastern margin of the Tibetan Plateau[J].Journal of Geodynamics,102:47-57.
Loveless J P,Meade B J.2010.Geodetic imaging of plate motions,slip rates,and partitioning of deformation in Japan[J].J Geophys Res,115(B2):B02410.
McCaffrey R,Qamar A I,King R W, et al.2007.Plate locking,block rotation and crustal deformation in the Pacific Northwest[J].Geophysical Journal International,169:1315-1340.
McCaffrey R.2002.Crustal block rotation sand plate coupling[C]//Plate Boundary Zones.Washington D C:AGU,101-122.
McCaffrey R.2005.Block kinematics of the pacific-north America plate boundary in the southwestern United States from inversion of GPS,seismological,and geologic data[J].J Geophys Res,110(B7):1-25.
McCaffrey R.2009.Time-dependent inversion of three-component continuous GPS for steady and transient sources in northern Cascadia[J].Geophys Res Lett,36:L07304.
Molnar P,Stock J M.2009.Slowing of India's convergence with Eurasia since 20Ma and its implications for Tibetan mantle dynamics[J].Tectonics,28(3):TC3001.1-TC3001.11.
Métivier F,Gaudemer Y,Tapponnier P, et al.1998.Northeastward growth of the Tibet plateau deduced from balanced reconstruction of the two areas:The Qaidam and Hexi corridor basins,China[J].Tectonics,17(6):823-842.
Peltzer G,Tapponnier P.1988.Formation and evolution of strike slip faults,rifts,and basins during the India-Asia collision:an experimental approach[J].Journal of Geophysical Research,93(B12):15085-15117.
Schmittbuhl J,Karabulut H,Lengline O, et al.2015.Seismicity distribution and locking depth along the Main Marmara Fault,Turkey[J].Geochemistry,Geophysics,Geosystems,17(3):954-965.
Tapponnier P,Molnar P.1976.Slip-line field theory and largescale continental tectonics[J].Nature,264(5584):319-324.
Tapponnier P,Xu Z Q,Roger F, et al.2001.Geology-stepwise rise and growth of the Tibet plateau.Science,294(5547):1671-1677.
Thatcher W.2007.Microplate model for the present-day deformation of Tibet[J].J Geophys Res,112(B1):B01401.
Wallace L M,Stevens C,Silver E, et al.2004.GPS and seismological constraints on active tectonics and arc-continent collision in Papua New Guinea:Implications for mechanics of microplate rotations in a plate boundary zone[J].J Geology Res,109(B5):B05404.
Wang H,Liu Z J,Ng H M, et al.2017.Sentinel -1 observations of the 2016 Menyuan earthquake:A buried reverse event linked to the left-lateral Haiyuan fault[J].International Journal of Applied Earth Observation and Geoinformation,61:14-21.
Wang K L,Wells R,Mazzotti S, et al.2003.A revised dislocation model of inter seismic deformation of the Cascadia subduction zone[J].J Geology Res,108(B1)2026.
Wang M,Shen Z K.2020.Present-day crustal deformation of continental China derived from GPS and its tectonic implications[J].Journal of Geophysical Research:Solid Earth,125(2):e2019JB018774.
Wang W,Wang D J,Zhao B, et al.2014.Horizontal crustal deformation in Chinese Mainland analyzed by CMONOC GPS data from 2009-2013[J].Geodesy and Geodynamics,5(3):41-45.
Yuan D Y,Zhang P Z,Ge W P, et al.2008.Late Quaternary strike-slip features along the western segment of Haiyuan-Qilianshan Fault,NE Tibetan plateau[C]//American Geophysical Union,Fall Meeting 2008.San Francisco,CA:AGU.
Zhang P Z,Gan W J,Shen Z K, et al.2005.A coupling model of rigid-block movement and continuous deformation:Patterns of the present-day deformation of China's continent and its vicinity[J].Acta GeologicaSinica,79(6):748-756.
Zhang P Z,Shen Z K,Wang M, et al.2004.Continuous deformation of the Tibetan Plateau from global positioning system data[J].Geology,32(9):809-812.
Zhang Z Q,McCaffrey R,Zhang P Z.2013.Relative motion across the eastern Tibetan plateau:Contributions from faulting,internal strain and rotation rates[J].Tectonophysics,584:240-256.
Zhao B,Huang Y,Zhang C H, et al.2015.Crustal deformation on the Chinese mainland during 1998-2014 based on GPS data[J].Geodesy and Geodynamics,6(1):7-15.
Zheng W J,Zhang P Z,He W G, et al.2013.Transformation of displacement between strike-slip and crustal shortening in the northern margin of the Tibetan Plateau:evidence from decadal GPS measurements and late Quaternary slip rates on faults[J].Tectonophysics,584(1):267-280.

Similar References:

Memo

Last Update: 2023-01-01