晋中盆地构造变形与地裂缝活动GPS监测分析
|
摘要
基于"数字地震网络工程"2007～2010年GPS监测数据,获取了晋中盆地现今地壳形变特征,并进一步利用椭球面块体应变模型研究了晋中盆地现今地壳应变场特征,据此分析了其与地质灾害发生的内在关系,揭示了盆地内地质灾害多发的成因。研究结果表明:晋中盆地现今地壳整体朝南东向运动,在盆地中部清徐—太谷区域表现出明显的拉张运动;晋中盆地现今地壳应变场整体以NW-SE向拉张为主,其中清徐—太谷、介休是应变高值区也是地震、地裂缝灾害多发区,最大主张应变量达1.8×10-6/a,且区域拉张应变方向与地裂缝呈近似垂直关系,进一步证实了晋中盆地地裂缝的强构造属性。
The crustal deformation-strain feature of the Jinzhong basin was analyzed using the ellipsoid block strain model and based on 2007–2010 GPS monitoring data from the digital seismic network project.Using this modeling approach,the relationship between deformation-strain characteristics and geological disasters was analyzed,and the causes of geological disasters in susceptible areas within the basin were also revealed.The results show that the present crustal overall movement of Jinzhong basin is to the southeast and,in the central part of the basin,the Qingxu-Taigu area showed significant extensional movement.The crustal strain field of Jinzhong basin mainly showed tension in the NW–SE direction.Qingxu-Taigu and Jiexiu were high value zones,whilst also earthquake and ground fissure disaster prone areas,and the maximum tension strain value reached 1.8 × 10–6/year.The direction of regional tensional strain is approximately vertical and intersects the strike of ground fissures,which were also strongly attributed to tectonic activity in the Jinzhong basin.
The crustal deformation-strain feature of the Jinzhong basin was analyzed using the ellipsoid block strain model and based on 2007–2010 GPS monitoring data from the digital seismic network project.Using this modeling approach,the relationship between deformation-strain characteristics and geological disasters was analyzed,and the causes of geological disasters in susceptible areas within the basin were also revealed.The results show that the present crustal overall movement of Jinzhong basin is to the southeast and,in the central part of the basin,the Qingxu-Taigu area showed significant extensional movement.The crustal strain field of Jinzhong basin mainly showed tension in the NW–SE direction.Qingxu-Taigu and Jiexiu were high value zones,whilst also earthquake and ground fissure disaster prone areas,and the maximum tension strain value reached 1.8 × 10–6/year.The direction of regional tensional strain is approximately vertical and intersects the strike of ground fissures,which were also strongly attributed to tectonic activity in the Jinzhong basin.
引文
[1]程新原,侯廷爱.交城断裂中段的活动特征及其地震危险性[J].山西地震,1996,(3):30-34.Cheng X Y,Hou T A.Active characteristics of the central segmentof Jiaocheng fault and its seismic risk[J].Earthquake Research inShanxi,1996,(3):30-34.
[2]谢新生,江娃利,孙昌斌,等.山西交城断裂带多个大探槽全新世古地震活动对比研究[J].地震地质,2008,30(2):412-430.Xie X S,Jiang W L,Sun C B,et al.Comparison study on holocenepaleoseismic activities among multi-trenches along the Jiaochegfault zone,Shanxi[J].Selsmology and Geology,2008,30(2):412-430.
[3]王银梅.太原地质灾害研究与防治[J].中国地质灾害与防治学报,2000,11(1):83-86.Wang Y M.Study of geological hazard and control in Taiyuancity[J].The Chinese Journal of Geological Hazard and Control,2000,11(1):83-86.
[4]金庆福.太原盆地的地震活动与断陷构造的关系[J].山西焦煤科技,1995,3(7):28-30.Jin Q F.The relationship between rift tectonic and earthquakein Taiyuan basin[J].Coal Science and Technology of Shanxi,1995,3(7):28-30.
[5]吴建中.中国地面沉降地质灾害区域划分方法与实践[J].上海国土资源,2011,32(2):84-87.Wu J Z.Method and application of land subsidence disasterregionalization[J].Shanghai Land&Resources,2011,32(2):84-87.
[6]曹金亮,刘瑾,乔清海,等.太原市主要地质灾害及防灾减灾措施研究[J].上海地质,2010,31(4):53-56,89.Cao J L,Liu J,Qiao Q H,et al.Main geological hazards in Taiyuancity and study on the preventive measures[J].Shanghai Geology,2010,31(4):53-56,89.
[7]张静,张勤,曲菲霏.运城市地面沉降SBAS-InSAR监测和敏感性GIS分析[J].上海国土资源,2012,33(1):58-61.Zhang J,Zhang Q,Qu F F.Monitoring land subsidence usingSBAS-InSAR and GIS to conduct sensitivity analysis inYuncheng[J].Shanghai Land&Resources,2012,33(1):58-61.
[8]梁文彪,李洪建,杨彩云.太原盆地边缘地貌与新构造运动及其意义[J].山西大学学报(自然科学版),2000,23(2):178-181.Liang W B,Li H J,Yang C Y.Edge geomorphology and neotectonicmovement in Taiyuan basin and its meanings[J].Journal of ShanxiUniversity(Natural Science Edition),2000,23(2):178-181.
[9]江娃利,谢新生,王瑞,等.山西断陷系交城断裂全新世古地震活动初步研究[J].地震研究,2004,27(2):184-190.Jiang W L,Xie X S,Wang R,et al.Preliminary study onactivity of holocene paleoearthquakes along the Jiaochen faultin the Shanxi downfault system[J].Journal of SeismologicalResearch,2004,27(2):184-190.
[10]杨国华,赵承坤,韩月萍.应用GPS技术监测山西断裂带的水平运动[J].地震学报,2000,22(5):465-471.Yang G H,Zhao C K,Han Y P,et al.Monitoring horizontalmovement along Shanxi fault zone by GPS measurement[J].ActaSeismologica Sinica,2000,22(5):465-471.
[11]张井飞,谢富仁,荆振杰,等.太原盆地地震潜势分析[J].大地测量与地球动力学,2011,31(5):47-51.Zhang J F,Xie F R,Jing Z J,et al.Analysis of seismic potentialin Taiyuan basin[J].Journal of Geodesy and Geodynamics,2011,31(5):47-51.
[12]胡亚轩,崔笃信,季灵运,等.鄂尔多斯块体及其周缘上地幔各向异性分析研究[J].地球物理学报,2011,54(6):1549-1558.Hu Y X,Cui D X,Ji L Y,et al.Seismic anisotropy of upper mantlein Ordos block and adjacent regions[J].Chinese Journal ofGeophys,2011,54(6):1549-1558.
[13]党亚民,晁定波,许才军,等.利用GPS形变资料确定地壳形变的应变特征[J].测绘科学,2001,26(3):10-13.Dang Y M,Zhao D B,Xu C J,et al.The detemination of strainaccumulation rates using GPS data[J].Science of Surveying andMapping,2001,26(3):10-13.
[14]孟国杰,申旭辉,伍吉仓,等.GPS地壳形变监测网应变解算方法与程序设计[J].大地测量与地球动力学,2006,26(2):70-74.Meng G J,Shen X H,Wu J C,et al.Methods and program designof strain computation from GPS deformation data[J].Journal ofGeodesy and Geodynamics,2006,26(2):70-74.
[15]顾国华,孙汉荣,孙惠娟,等.利用GPS地形变资料在大地坐标系中计算应变[J].地壳形变与地震,1998,8(3):26-31.Gu G H,Sun H R,Sun H J,et al.Deduction of strain from GPS crustal deformation data in geodetic coordinate system[J].Crustal Deformation and Earthquake,1998,8(3):26-31.
[16]刘巍,赵新平,安卫平.太原盆地的应力场特征[J].山西地震,1994,(1):18-24.Liu W,Zhao X P,An W P.Characteristics of stress field in Taiyuan basin[J].Earthquake Research in Shanxi,1994,(1):18-24.
[17]安美健,李方全.山西地堑系现今构造应力场[J].地震学报,1998,20(5):461-465.An M J,Li F Q.The present tectonic stress of Shanxi rift[J].Acta Seismologica Sinica,1998,20(5):461-465.
[18]刘经南,姚宜斌,施闯.中国地壳运动整体速度场模型的建立方法研究[J].武汉大学学报(信息科学版),2002,27(4):331-336.Liu J N,Yao Y B,Shi C.Method for establishing the speed field model of crustal movement in China[J].Geomatics and Information Science of Wuhan University,2002,27(4):331-336.
[19]熊熊,刘孙君,许厚泽.青藏高原地壳东—西向拉张及力学机制[J].武汉大学学报(信息科学版),2003,28(S1):150-154.Xiong X,Liu S J,Xu H Z.Crustal E-W extension of Qinghai-Tibet plateau and its mechanical mechanism[J].Geomatics and Information Science of Wuhan University,2003,28(S1):150-154.
[2]谢新生,江娃利,孙昌斌,等.山西交城断裂带多个大探槽全新世古地震活动对比研究[J].地震地质,2008,30(2):412-430.Xie X S,Jiang W L,Sun C B,et al.Comparison study on holocenepaleoseismic activities among multi-trenches along the Jiaochegfault zone,Shanxi[J].Selsmology and Geology,2008,30(2):412-430.
[3]王银梅.太原地质灾害研究与防治[J].中国地质灾害与防治学报,2000,11(1):83-86.Wang Y M.Study of geological hazard and control in Taiyuancity[J].The Chinese Journal of Geological Hazard and Control,2000,11(1):83-86.
[4]金庆福.太原盆地的地震活动与断陷构造的关系[J].山西焦煤科技,1995,3(7):28-30.Jin Q F.The relationship between rift tectonic and earthquakein Taiyuan basin[J].Coal Science and Technology of Shanxi,1995,3(7):28-30.
[5]吴建中.中国地面沉降地质灾害区域划分方法与实践[J].上海国土资源,2011,32(2):84-87.Wu J Z.Method and application of land subsidence disasterregionalization[J].Shanghai Land&Resources,2011,32(2):84-87.
[6]曹金亮,刘瑾,乔清海,等.太原市主要地质灾害及防灾减灾措施研究[J].上海地质,2010,31(4):53-56,89.Cao J L,Liu J,Qiao Q H,et al.Main geological hazards in Taiyuancity and study on the preventive measures[J].Shanghai Geology,2010,31(4):53-56,89.
[7]张静,张勤,曲菲霏.运城市地面沉降SBAS-InSAR监测和敏感性GIS分析[J].上海国土资源,2012,33(1):58-61.Zhang J,Zhang Q,Qu F F.Monitoring land subsidence usingSBAS-InSAR and GIS to conduct sensitivity analysis inYuncheng[J].Shanghai Land&Resources,2012,33(1):58-61.
[8]梁文彪,李洪建,杨彩云.太原盆地边缘地貌与新构造运动及其意义[J].山西大学学报(自然科学版),2000,23(2):178-181.Liang W B,Li H J,Yang C Y.Edge geomorphology and neotectonicmovement in Taiyuan basin and its meanings[J].Journal of ShanxiUniversity(Natural Science Edition),2000,23(2):178-181.
[9]江娃利,谢新生,王瑞,等.山西断陷系交城断裂全新世古地震活动初步研究[J].地震研究,2004,27(2):184-190.Jiang W L,Xie X S,Wang R,et al.Preliminary study onactivity of holocene paleoearthquakes along the Jiaochen faultin the Shanxi downfault system[J].Journal of SeismologicalResearch,2004,27(2):184-190.
[10]杨国华,赵承坤,韩月萍.应用GPS技术监测山西断裂带的水平运动[J].地震学报,2000,22(5):465-471.Yang G H,Zhao C K,Han Y P,et al.Monitoring horizontalmovement along Shanxi fault zone by GPS measurement[J].ActaSeismologica Sinica,2000,22(5):465-471.
[11]张井飞,谢富仁,荆振杰,等.太原盆地地震潜势分析[J].大地测量与地球动力学,2011,31(5):47-51.Zhang J F,Xie F R,Jing Z J,et al.Analysis of seismic potentialin Taiyuan basin[J].Journal of Geodesy and Geodynamics,2011,31(5):47-51.
[12]胡亚轩,崔笃信,季灵运,等.鄂尔多斯块体及其周缘上地幔各向异性分析研究[J].地球物理学报,2011,54(6):1549-1558.Hu Y X,Cui D X,Ji L Y,et al.Seismic anisotropy of upper mantlein Ordos block and adjacent regions[J].Chinese Journal ofGeophys,2011,54(6):1549-1558.
[13]党亚民,晁定波,许才军,等.利用GPS形变资料确定地壳形变的应变特征[J].测绘科学,2001,26(3):10-13.Dang Y M,Zhao D B,Xu C J,et al.The detemination of strainaccumulation rates using GPS data[J].Science of Surveying andMapping,2001,26(3):10-13.
[14]孟国杰,申旭辉,伍吉仓,等.GPS地壳形变监测网应变解算方法与程序设计[J].大地测量与地球动力学,2006,26(2):70-74.Meng G J,Shen X H,Wu J C,et al.Methods and program designof strain computation from GPS deformation data[J].Journal ofGeodesy and Geodynamics,2006,26(2):70-74.
[15]顾国华,孙汉荣,孙惠娟,等.利用GPS地形变资料在大地坐标系中计算应变[J].地壳形变与地震,1998,8(3):26-31.Gu G H,Sun H R,Sun H J,et al.Deduction of strain from GPS crustal deformation data in geodetic coordinate system[J].Crustal Deformation and Earthquake,1998,8(3):26-31.
[16]刘巍,赵新平,安卫平.太原盆地的应力场特征[J].山西地震,1994,(1):18-24.Liu W,Zhao X P,An W P.Characteristics of stress field in Taiyuan basin[J].Earthquake Research in Shanxi,1994,(1):18-24.
[17]安美健,李方全.山西地堑系现今构造应力场[J].地震学报,1998,20(5):461-465.An M J,Li F Q.The present tectonic stress of Shanxi rift[J].Acta Seismologica Sinica,1998,20(5):461-465.
[18]刘经南,姚宜斌,施闯.中国地壳运动整体速度场模型的建立方法研究[J].武汉大学学报(信息科学版),2002,27(4):331-336.Liu J N,Yao Y B,Shi C.Method for establishing the speed field model of crustal movement in China[J].Geomatics and Information Science of Wuhan University,2002,27(4):331-336.
[19]熊熊,刘孙君,许厚泽.青藏高原地壳东—西向拉张及力学机制[J].武汉大学学报(信息科学版),2003,28(S1):150-154.Xiong X,Liu S J,Xu H Z.Crustal E-W extension of Qinghai-Tibet plateau and its mechanical mechanism[J].Geomatics and Information Science of Wuhan University,2003,28(S1):150-154.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心