基于水准剖面的山西断陷带现今活动性研究
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摘要
根据跨山西断陷带的水准剖面观测资料,计算其垂直形变量和垂直形变速率,研究其现今垂直活动性。2006年以来的垂直形变揭示,山西断陷带东北段延怀盆地和蔚县盆地呈掀斜上升活动,北段阳原盆地和大同盆地以下降活动为主,晋中盆地为上下波动,临汾盆地呈现上升活动。2013年山西断陷带活动出现转折性变化,蔚县盆地大幅度下降,大同盆地、代县-定襄盆地、晋中盆地和临汾盆地均呈现不同程度的上升。
In this paper,current vertical mobility of Shanxi is studied,according to observational data,calculation of vertical deformation variables and the vertical deformation rate of leveling across the Shanxi rift zone section.Since 2006,the vertical deformation of Shanxi with the northeast of the Yanhuai and Weixian basins show rising tilting activity.Further,north of the Yangyuan and the Datong basins present decreasing activity,the Jinzhong basin fluctuates and the Linfen basin shows rising activity.However,the tipping point of Shanxi activity appears in 2013.The Weixian basin has decreased by a large margin.The Datong,DaixianDingxiang,Jinzhong and Linfen basins have risen to varying degrees.
In this paper,current vertical mobility of Shanxi is studied,according to observational data,calculation of vertical deformation variables and the vertical deformation rate of leveling across the Shanxi rift zone section.Since 2006,the vertical deformation of Shanxi with the northeast of the Yanhuai and Weixian basins show rising tilting activity.Further,north of the Yangyuan and the Datong basins present decreasing activity,the Jinzhong basin fluctuates and the Linfen basin shows rising activity.However,the tipping point of Shanxi activity appears in 2013.The Weixian basin has decreased by a large margin.The Datong,DaixianDingxiang,Jinzhong and Linfen basins have risen to varying degrees.
引文
[1]塔拉,陈阜超,周海涛,等.山西地区现代地壳垂直运动研究[J].大地测量与地球动力学,2014,34(1):32-37(Ta La,Chen Fuchao,Zhou Haitao,et al.Study on Modern Crustal Vertical Motion in Shanxi Area[J].Journal of Geodesy and Geodynamics,2014,34(1):32-37)
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[4]王若柏,洪汉净,许忠淮,等.华北地区地壳垂直形变场及动态演化特征[J].地震学报,1995,17(2):148-155(Wang Ruobai,Hong Hanjing,Xu Zhonghuai,et al.The Characteristics of Vertical Crustal Deformation Field and Its Dynamic Evolution in North China[J].Acta Seismologica Sinica,1995,17(2):148-155)
[5]韩月萍,陈阜超,杨国华,等.华北北部地区现今地壳垂直形变特征与地震危险性分析[J].大地测量与地球动力学,2010,30(2):25-28(Han Yueping,Chen Fuchao,Yang Guohua,et al.Characteristics of Present-Day Crust Vertical Deformation and Earthquake Risk Analyzes in Northern Area of North China[J].Journal of Geodesy and Geodynamics,2010,30(2):25-28)
[6]陈阜超,纪静,京津水准复测与垂直形变特征[J].华北地震科学,2011,29(2):31-34(Chen Fuchao,Ji Jing,Ta La,et al.Repetition Leveling and Vertical Deformation Characteristic of Beijing-Tianjin Region[J].North China Earthquake Sciences,2011,29(2):31-34)
[7]刘瑞春,季灵运.临汾盆地及其边界断裂现今变形研究[J].大地测量与地球动力学,2014,34(1):28-31(Liu Ruichun,Ji Lingyun.Present-Day Crustal Deformation of Linfen Basin and Its Boundary Faults[J].Journal of Geodesy and Geodynamics,2014,34(1):28-31)
[8]宋美琴,郑勇,葛粲,等.山西地震带中小震精确位置及其显示的山西地震构造特征[J].地球物理学报,2012,55(2):513-525(Song Meiqin,Zheng Yong,Ge Can,et al.Relocation of Small to Moderate Earthquakes in Shanxi Province and Its Relation to the Seismogenic Structures[J].Chinese Journal of Geophysics,2012,55(2):513-525)
[9]邓起东,王克鲁,汪一鹏,等.山西隆起断陷地震带地震地质条件及地震发展趋势概述[J].地质科学,1973(1):37-47(Deng Qidong,Wang Kelu,Wang Yipeng,et al.On the Tendency of Seismicity and the Geological Set-up of the Seismic Belt of Shanxi Graben[J].Sci Geol,1973(1):37-47)
[2]郭良迁,占伟,杨国华,等.山西断陷带的近期位移和应变率特征[J].大地测量与地球动力学,2010,30(4):36-42(Guo Liangqian,Zhan Wei,Yang Guohua,et al.Short-Term Displacement and Characteristics of Strain Rate of Shanxi Fault Subsidence Zone[J].Journal of Geodesy and Geodynamics,2010,30(4):36-42)
[3]郭良迁,陈聚忠,塔拉.京津唐地区的现今垂直形变特征及其构造活动的含义[J].大地测量与地球动力学,2012,32(4):1-4(Guo Liangqian,Chen Juzhong,Ta La.Characteristics of Present Vertical Deformation and Tectonic Activities in Beijing-Tianjin-Tangshan Area[J].Journal of Geodesy and Geodynamics,2012,32(4):1-4)
[4]王若柏,洪汉净,许忠淮,等.华北地区地壳垂直形变场及动态演化特征[J].地震学报,1995,17(2):148-155(Wang Ruobai,Hong Hanjing,Xu Zhonghuai,et al.The Characteristics of Vertical Crustal Deformation Field and Its Dynamic Evolution in North China[J].Acta Seismologica Sinica,1995,17(2):148-155)
[5]韩月萍,陈阜超,杨国华,等.华北北部地区现今地壳垂直形变特征与地震危险性分析[J].大地测量与地球动力学,2010,30(2):25-28(Han Yueping,Chen Fuchao,Yang Guohua,et al.Characteristics of Present-Day Crust Vertical Deformation and Earthquake Risk Analyzes in Northern Area of North China[J].Journal of Geodesy and Geodynamics,2010,30(2):25-28)
[6]陈阜超,纪静,京津水准复测与垂直形变特征[J].华北地震科学,2011,29(2):31-34(Chen Fuchao,Ji Jing,Ta La,et al.Repetition Leveling and Vertical Deformation Characteristic of Beijing-Tianjin Region[J].North China Earthquake Sciences,2011,29(2):31-34)
[7]刘瑞春,季灵运.临汾盆地及其边界断裂现今变形研究[J].大地测量与地球动力学,2014,34(1):28-31(Liu Ruichun,Ji Lingyun.Present-Day Crustal Deformation of Linfen Basin and Its Boundary Faults[J].Journal of Geodesy and Geodynamics,2014,34(1):28-31)
[8]宋美琴,郑勇,葛粲,等.山西地震带中小震精确位置及其显示的山西地震构造特征[J].地球物理学报,2012,55(2):513-525(Song Meiqin,Zheng Yong,Ge Can,et al.Relocation of Small to Moderate Earthquakes in Shanxi Province and Its Relation to the Seismogenic Structures[J].Chinese Journal of Geophysics,2012,55(2):513-525)
[9]邓起东,王克鲁,汪一鹏,等.山西隆起断陷地震带地震地质条件及地震发展趋势概述[J].地质科学,1973(1):37-47(Deng Qidong,Wang Kelu,Wang Yipeng,et al.On the Tendency of Seismicity and the Geological Set-up of the Seismic Belt of Shanxi Graben[J].Sci Geol,1973(1):37-47)