大别山及其周边现今垂直形变研究
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摘要
基于1980年、2005年和2015年3期区域精密水准网观测资料,利用线性动态平差模型计算获取大别山地区水准网长期垂直运动速度场图像。研究发现,淮河平原地表下沉较为严重,大别山呈现弱隆升趋势运动,长江谷地边缘地区较大别山区呈现明显的隆升运动。跨郯庐断裂带水准剖面结果显示,垂直运动与地形呈负相关和弱相关。
As a collision orogenic belt,Dabie mountain is between the Yangtze and North China blocks.To calculate integrally the rate field of Dabie mountain,we use linear deformation models based on leveling observation data in 1980,2005 and 2015.Our research shows that:Huaihe plain ground is subsiding due to drawing groundwater;Dabie mountain is lifting as caused by inheritance movement;Yangtze river valley is also dominated by inheritance movement;and the southern segment of the Tanlu fault is in the stage of strain accumulation.Preparation for a potential earthquake should be undertaken.
As a collision orogenic belt,Dabie mountain is between the Yangtze and North China blocks.To calculate integrally the rate field of Dabie mountain,we use linear deformation models based on leveling observation data in 1980,2005 and 2015.Our research shows that:Huaihe plain ground is subsiding due to drawing groundwater;Dabie mountain is lifting as caused by inheritance movement;Yangtze river valley is also dominated by inheritance movement;and the southern segment of the Tanlu fault is in the stage of strain accumulation.Preparation for a potential earthquake should be undertaken.
引文
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[13]宋方敏,邓志辉,马晓静,等.长江谷地安庆-马鞍山段新构造和断裂活动特征[J].地震地质,2008,30(1):99-110(Song Fangmin,Deng Zhihui,Ma Xiaojing,et al.Neotecton and Fault Activity in the Anqing-Ma’anshan Section of the Changjiang River Valley[J].Seismology and geology,2008,30(1):99-110)
[14]王洪涛,曾建民.江西九江(瑞昌)5.7级地震的地震地质构造环境与发震构造之研究[J].福建地震,2007,23(1-2):2-29(Wang Hongtao,Zeng Jianmin.The Research on Seismological Structure Environment and Seismogenic Structure of MS5.7Earthquake in Jiujiang-Ruichang Region,Jiangxi Province[J].Fujian Seismology,2007,23(1-2):2-29)
[2]刘少峰,张国伟.东秦岭-大别山及邻区盆-山系统演化与动力学[J].地质通报,2008,27(12):1 943-1 960(Liu Shaofeng,Zhang Guowei.Evolution and Geodynamics of Basin/Mountain Systems in the East Qinling-Dabieshan and Its Adjacent Regions[J].Geology Bulletin of China,2008,27(12):1 943-1 960)
[3]姚大全,张杰,沈小七.安徽霍山地区断层活动习性研究的新进展[J].地球物理学进展,2006,21(3):776-782(Yao Daquan,Zhang Jie,Shen Xiaoqi.New Advance of the Fault Active Behavior Research in Huoshan Area,Anhui Province[J].Progress in Geophysics,2006,21(3):776-782)
[4]郑兆,庆梅,李敏莉.霍山窗与华东中强地震关系研究[J].地震学刊,1999,21(3):1-9(Zheng Zhao,Qing Mei,Li Minli.Study on Correlation between Huoshan Seismic Window and Occurrence of Moderate Earthquake of East China[J].Journal of Seismology,1999,21(3):1-9)
[5]刘备,朱光,翟明见,等.郯庐断裂带安徽段活断层特征与成因[J].地质科学,2015,50(2):611-630(Liu Bei,Zhu Guang,Zhai Mingjian,et al.Features and Genesis of Active Faults in the Anhui Segement of the Tanlu Fault Zone[J].Chinese Journal of Geology,2015,50(2):611-630)
[6]秦姗兰,王文萍,季灵运,等.利用GPS技术研究山西跨断裂剖面垂直形变[J].地震研究,2016,39(3):369-374(Qin Shanlan,Wang Wenping,Ji Lingyun,et al.Reserch on Vertical Deformation of Fault-Crossing in Shanxi by GPS Technology[J].Journal of Seismology Research,2016,39(3):369-374)
[7]赖锡安.中国大陆现今地壳运动[M].北京:地震出版社,2004(Lai Xi’an.Present Crustal Movement in the Mainland of China[M].Beijing:Seismological Press,2004)
[8]胡魏巍,王式成,王根绪,等.安徽淮北平原地下水动态变化研究[J].自然资源学报,2009,24(11):1 893-1 901(Hu Weiwei,Wang Shicheng,Wang Genxu,et al.Study on the Groundwater Dynamics of the Huaibei Alluvial Plain in Anhui Province[J].Journal of the Natural Resources,2009,24(11):1 893-1 901)
[9]邓坤,王式成,谭炳卿.人类活动对安徽淮北地区地下水资源影响研究[J].水资源研究,2010,31(2):6-8(Deng Kun,Wang Shicheng,Tan Bingqing.Study on Impact of Human Activities on Groundwater Resources in Huaibei Area of Anhui[J].Journal of Water Resources Research,2010,31(2):6-8)
[10]向必伟,朱光,姜大志,等.晓天-磨子潭韧性剪切带变形模拟及其对北大别穹隆构造演化的指示[J].地质论评,2009,55(2):159-172(Xiang Biwei,Zhu Guang,Jiang Dazhi,et al.Formation Processes and Deformation Modeling for Post-Orogenic Dome Structures of the North Dabie[J].Earth Science Frontiers,2009,55(2):159-172)
[11]向必伟,王勇生,朱光,等.北大别造山后穹隆构造的形成过程与变形模拟[J].地学前缘,2009,16(3):87-101(Xiang Biwei,Wang Yongsheng,Zhu Guang,et al.Formation Processes and Deformation Modeling Structures of the North Dabie[J].Earth Science Frontiers,2009,16(3):87-101)
[12]楚全芝,唐方头,邓志辉,等.长江下游芜湖地区新构造运动基本特点[J].有色金属,2008,60(2):19-23(Chu Quanzhi,Tang Fangtou,Deng Zhihui,et al.Basic Feature of Neotectonic Movement along the Lower Course of Yangtze River in the Wuhu Region[J].Nonferrous Metals,2008,60(2):19-23)
[13]宋方敏,邓志辉,马晓静,等.长江谷地安庆-马鞍山段新构造和断裂活动特征[J].地震地质,2008,30(1):99-110(Song Fangmin,Deng Zhihui,Ma Xiaojing,et al.Neotecton and Fault Activity in the Anqing-Ma’anshan Section of the Changjiang River Valley[J].Seismology and geology,2008,30(1):99-110)
[14]王洪涛,曾建民.江西九江(瑞昌)5.7级地震的地震地质构造环境与发震构造之研究[J].福建地震,2007,23(1-2):2-29(Wang Hongtao,Zeng Jianmin.The Research on Seismological Structure Environment and Seismogenic Structure of MS5.7Earthquake in Jiujiang-Ruichang Region,Jiangxi Province[J].Fujian Seismology,2007,23(1-2):2-29)