根据重力资料定性与定量解释银川平原断裂体系
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摘要
银川平原是活动断层发育的地区,活动断层与地震灾害联系密切,研究银川平原的断裂体系对城市发展具有重要意义。笔者对银川平原1∶20万布格重力资料进行二次处理,分析了该地区的布格重力异常特征,并利用重力异常边界识别方法划分了断裂体系;运用断裂参量图法、欧拉反褶积法、最优化反演以及2.5D人机交互反演等方法对研究区83503线剖面做定量反演,并利用地震资料进行约束。笔者利用现有的重力资料,探讨了根据重力资料解释平面断裂体系以及剖面断裂定量反演的方法,得出了银川断裂有北延趋势、黄河断裂部分段相对前人断裂划分结果向西偏移等新认识,为活动断层的研究提供了新的参考资料。
The Yinchuan plain is a region of active faults which are closely related to earthquake disasters. The study of active faults in the Yinchuan plain is of great significance for the development of the city. In this paper,the gravity anomaly characteristics of the area are analyzed and the fracture system is divided by the method of gravity boundary recognition based on the re-processing of 1 ∶200 000 Bouguergravity anomaly data of the Yinchuan plain. The quantitative inversion of the 83503 line section of the study area is carried out by using the method of fracture parametric graph,the Euler homogeneous equation,the optimal inversion and the 2.5 D inversion. The inversion results and the seismic interpretation are coincident. Using the existing gravity data,the authors probed into the method of interpreting the plane fracture system and the quantitative inversion of the section fracture and,as a result,some new understanding was obtained such as the north extension of the Yinchuan fault and westward migration of a part of Yellow River fault. The result provides a new reference for the research on active faults.
The Yinchuan plain is a region of active faults which are closely related to earthquake disasters. The study of active faults in the Yinchuan plain is of great significance for the development of the city. In this paper,the gravity anomaly characteristics of the area are analyzed and the fracture system is divided by the method of gravity boundary recognition based on the re-processing of 1 ∶200 000 Bouguergravity anomaly data of the Yinchuan plain. The quantitative inversion of the 83503 line section of the study area is carried out by using the method of fracture parametric graph,the Euler homogeneous equation,the optimal inversion and the 2.5 D inversion. The inversion results and the seismic interpretation are coincident. Using the existing gravity data,the authors probed into the method of interpreting the plane fracture system and the quantitative inversion of the section fracture and,as a result,some new understanding was obtained such as the north extension of the Yinchuan fault and westward migration of a part of Yellow River fault. The result provides a new reference for the research on active faults.
引文
[1]李宁生,冯志民,朱秦,等.宁夏区域重磁资料开发利用研究[M].北京:地质出版社,2016.Li N S,Feng Z M,Zhu Q,et al. Development and utilization of gravity and magnetic data in Ningxia area[M].Beijing:Geological Publishing House,2016.
[2]王美方,李慧勤.宁夏银川盆地地质构造演化特征[J].科技资讯,2008,3(5):148-149.Wang M F,Li H Q.Characteristics of geological structure evolution in Yinchuan basin,Ningxia[J]. Science&Technology Information,2008,3(5):148-149.
[3]朱西敏.利用重力异常反演隐伏断裂构造的研究[D].北京:中国地质大学(北京),2013.Zhu X M.Inversion of buried fault structures by gravity anomalies[D].Beijing:China university of Geoscience(Beijing),2013.
[4]刘保金,柴炽章,酆少英,等.第四系沉积区断层及其上断点探测的地震方法技术——以银川隐伏断裂为例[J].地球物理学报,2008,51(5):1475-1483.Liu B J,Cai C Z,Feng S Y,et al. Seismic exploration method for buried fault and its up-break point in Quaternary sediment area—An example of Yinchuan buried active fault[J].Chinese Journal of Geophysics,2008,51(5):1457-1483.
[5] Stanley J M,Green R.Gravity gradients and interpretation of the truncated plate[J]. Geophysics,1976,41(6):1370-1376.
[6] Butler D K. Interval gravity-gradient determination concepts[J].Geophysics,1984,49:828-832.
[7]魏伟,刘天佑.台阶重力异常的梯度解释[J].石油地球物理勘探,2005,40(2):238-242.Wei W,Liu T Y. Gradient interpretation of step gravity anomaly[J].Oil Geophysical Prospecting,2005,40(2):238-242.
[8]蔡宗熹,姜兰.二维倾斜断层重力异常的正反演[J].物探化探计算技术,1986,8(1):32-41.Cai Z X,Jiang L.Forward and inverse problems of gravity anomalies due to 2D inclined fault[J]. Computing Techniques for Geophysical and Geochemical Exploration,1986,8(1):32-41.
[9]李丽丽,孟令顺,杜晓娟,等.一种断层重力异常定量解释方法[J].石油地球物理勘探,2012,47(4):665-667.Li L L,Meng L S,Du X J,et al. A quantitative method for fault gravity anomaly interpretation[J]. Oil Geophysical Prospecting,2012,47(4):665-667.
[10]王同庆,陈超,董运洪,等.改进的重力异常梯度法在二维断层几何参数定量解释中的应用[J].大地测量与地球动力学,2013,33(6):81-85.Wang T Q,Chen C,Dong Y H,et al.Application of improved gravity anomaly gradients method in quantitative interpretation of geometric parameters of 2D fault[J]. Journal of Geodesy and Geodynamics,2013,33(6):81-85.
[11]王万银.位场总水平导数极值位置空间变化规律研究[J].地球物理学报,2010,53(9):2257-2270.Wang W Y.Spatial variation law of the extreme value positions total horizontal derivative for potential field data[J]. Chinese Journal of Geophysics,2010,53(9):2257-2270.
[12]王万银,邱之云,杨永,等.位场边缘识别方法研究进展[J].地球物理学进展,2010,25(1):196-210.Wang W Y,Qiu Z Y,Yang Y,et al.Some advances in the edge recognition of the potential field[J]. Progress of Geophysics,25(1):196-210.
[13]王万银.位场解析信号振幅极值位置空间变化规律研究[J].地球物理学报,2012,55(4):1288-1299.Wang W Y. Spatial variation law of the extreme value positions of analytical signal amplitude for potential field data[J]. Chinese Journal of Geophysics,2012,55(4):1288-1299.
[14] Wang W Y,Pan Y,Qiu Z Y.A new edge recognition technology based on the normalized vertical derivative of the total horizontal derivative for potential field data[J]. Applied Geophysics,2009,6(3):226-233.
[15]张毅,徐如刚,余勇,等.高精度重力测量在隐伏断层探测中的应用[J].国际地震动态,2012,401(5):6-7.Zhang Y,Xu R G,Yu Y,et al.Application of high precision gravity survey in concealed fault detection[J]. Recent Developments in World Seismology,2012,401(5):6-7.
[16]许闯.多尺度重力反演方法及其在城市活动断层探测中的应用研究[D].武汉:武汉大学,2014.Xu C.Study on multi-scale gravity inverse method and its application to detect urban active faults[D]. Wuhan:Wuhan University,2014.
[17]陈石.利用重力异常进行三维断层参数反演方法研究[D].西安:长安大学,2005.Chen S.Research on 3D fault parameter inversion method based on gravity anomaly[D].Xi’an:Chang'an University,2005.
[18]顾心如.倾斜断层Vzz,Vzzz的联合反问题[J].物探与化探,1994,18(5):353-362.Gu X R.The solutions of reverse problems of combined Vzzand Vzzz for the inclined fault[J].Geophysical&Geochemical Exploration,1994,18(5):353-362.
[19]王万银,张瑾爱,刘莹,等.利用重磁资料研究莺—琼盆地构造分界及其两侧断裂特征[J].地球物理学进展,2013,28(3):1575-1583.Wang W Y,Zhang J A,Liu Y,et al. Research on the tectonic boundary of Ying-Qiong basin and adjacent fault'features based on gravity and magnetic data[J]. Progress in Geophysics,2013,28(3):1575-1583.
[2]王美方,李慧勤.宁夏银川盆地地质构造演化特征[J].科技资讯,2008,3(5):148-149.Wang M F,Li H Q.Characteristics of geological structure evolution in Yinchuan basin,Ningxia[J]. Science&Technology Information,2008,3(5):148-149.
[3]朱西敏.利用重力异常反演隐伏断裂构造的研究[D].北京:中国地质大学(北京),2013.Zhu X M.Inversion of buried fault structures by gravity anomalies[D].Beijing:China university of Geoscience(Beijing),2013.
[4]刘保金,柴炽章,酆少英,等.第四系沉积区断层及其上断点探测的地震方法技术——以银川隐伏断裂为例[J].地球物理学报,2008,51(5):1475-1483.Liu B J,Cai C Z,Feng S Y,et al. Seismic exploration method for buried fault and its up-break point in Quaternary sediment area—An example of Yinchuan buried active fault[J].Chinese Journal of Geophysics,2008,51(5):1457-1483.
[5] Stanley J M,Green R.Gravity gradients and interpretation of the truncated plate[J]. Geophysics,1976,41(6):1370-1376.
[6] Butler D K. Interval gravity-gradient determination concepts[J].Geophysics,1984,49:828-832.
[7]魏伟,刘天佑.台阶重力异常的梯度解释[J].石油地球物理勘探,2005,40(2):238-242.Wei W,Liu T Y. Gradient interpretation of step gravity anomaly[J].Oil Geophysical Prospecting,2005,40(2):238-242.
[8]蔡宗熹,姜兰.二维倾斜断层重力异常的正反演[J].物探化探计算技术,1986,8(1):32-41.Cai Z X,Jiang L.Forward and inverse problems of gravity anomalies due to 2D inclined fault[J]. Computing Techniques for Geophysical and Geochemical Exploration,1986,8(1):32-41.
[9]李丽丽,孟令顺,杜晓娟,等.一种断层重力异常定量解释方法[J].石油地球物理勘探,2012,47(4):665-667.Li L L,Meng L S,Du X J,et al. A quantitative method for fault gravity anomaly interpretation[J]. Oil Geophysical Prospecting,2012,47(4):665-667.
[10]王同庆,陈超,董运洪,等.改进的重力异常梯度法在二维断层几何参数定量解释中的应用[J].大地测量与地球动力学,2013,33(6):81-85.Wang T Q,Chen C,Dong Y H,et al.Application of improved gravity anomaly gradients method in quantitative interpretation of geometric parameters of 2D fault[J]. Journal of Geodesy and Geodynamics,2013,33(6):81-85.
[11]王万银.位场总水平导数极值位置空间变化规律研究[J].地球物理学报,2010,53(9):2257-2270.Wang W Y.Spatial variation law of the extreme value positions total horizontal derivative for potential field data[J]. Chinese Journal of Geophysics,2010,53(9):2257-2270.
[12]王万银,邱之云,杨永,等.位场边缘识别方法研究进展[J].地球物理学进展,2010,25(1):196-210.Wang W Y,Qiu Z Y,Yang Y,et al.Some advances in the edge recognition of the potential field[J]. Progress of Geophysics,25(1):196-210.
[13]王万银.位场解析信号振幅极值位置空间变化规律研究[J].地球物理学报,2012,55(4):1288-1299.Wang W Y. Spatial variation law of the extreme value positions of analytical signal amplitude for potential field data[J]. Chinese Journal of Geophysics,2012,55(4):1288-1299.
[14] Wang W Y,Pan Y,Qiu Z Y.A new edge recognition technology based on the normalized vertical derivative of the total horizontal derivative for potential field data[J]. Applied Geophysics,2009,6(3):226-233.
[15]张毅,徐如刚,余勇,等.高精度重力测量在隐伏断层探测中的应用[J].国际地震动态,2012,401(5):6-7.Zhang Y,Xu R G,Yu Y,et al.Application of high precision gravity survey in concealed fault detection[J]. Recent Developments in World Seismology,2012,401(5):6-7.
[16]许闯.多尺度重力反演方法及其在城市活动断层探测中的应用研究[D].武汉:武汉大学,2014.Xu C.Study on multi-scale gravity inverse method and its application to detect urban active faults[D]. Wuhan:Wuhan University,2014.
[17]陈石.利用重力异常进行三维断层参数反演方法研究[D].西安:长安大学,2005.Chen S.Research on 3D fault parameter inversion method based on gravity anomaly[D].Xi’an:Chang'an University,2005.
[18]顾心如.倾斜断层Vzz,Vzzz的联合反问题[J].物探与化探,1994,18(5):353-362.Gu X R.The solutions of reverse problems of combined Vzzand Vzzz for the inclined fault[J].Geophysical&Geochemical Exploration,1994,18(5):353-362.
[19]王万银,张瑾爱,刘莹,等.利用重磁资料研究莺—琼盆地构造分界及其两侧断裂特征[J].地球物理学进展,2013,28(3):1575-1583.Wang W Y,Zhang J A,Liu Y,et al. Research on the tectonic boundary of Ying-Qiong basin and adjacent fault'features based on gravity and magnetic data[J]. Progress in Geophysics,2013,28(3):1575-1583.
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