| 关中地区垂直形变场和应力场的特征 |
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| 引用本文： | 王争良,曹建平.关中地区垂直形变场和应力场的特征[J].西北地震学报,1992,14(4):69-74. |
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| 作者姓名： | 王争良 曹建平 |
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| 作者单位： | 陕西省地震局
(王争良)，陕西省地震局(曹建平) |
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| 摘 要： | 本文利用关中盆地1972—1986年的4期大面积垂直形变资料,采用经典静态平差方法,求出该盆地相对于1972年的垂直位移量,并作出位移等值线图。据此讨论了近年来该盆地的垂直形变场的变化特征。结果表明,该地区现今的地壳垂直形变基本上继承了第四纪时期的特征,但在盆地西部有差异。本文将关中盆地简化为一个平面力学模型,采用有限元法反演关中盆地1976年、1980年和1986年相对于1972年的应力值,研究了该盆地的应力场分布特征。
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| 关 键 词： | 垂直变形 关中盆地 有限元 应力场 |
| 收稿时间： | 1991/1/15 0:00:00 |
DISTRIBUTION CHARACTERISTICS OF VERTICAL DEFORMATION AND STRESS FIELDS IN GUANZHONG REGION |
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| Wang Zhengliang and Cao Jianping.DISTRIBUTION CHARACTERISTICS OF VERTICAL DEFORMATION AND STRESS FIELDS IN GUANZHONG REGION[J].Northwestern Seismological Journal,1992,14(4):69-74. |
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| Authors: | Wang Zhengliang and Cao Jianping |
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| Institution: | Seismological Bureau of Shaanxi Province, Xi''an, China and Seismological Bureau of Shaanxi Province, Xi''an, China |
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| Abstract: | Using four period large area vertical deformation data from 1972 to 1986 in Guanzhong basin and classical static adjustment method, the vertical displacement quantities and contours at various periods relative to 1972 are obtained,on which the change characteristics of vertical deformation field in recent years on Guanzhong region are determined. The results show that the recent vertical deformation of the crust in the region basically inherits the features of Quaternary, has slightly difference in the west of the basin. In addition,the stress field characteristics of the basin since 1972 are inversed by the finite element method through simplifying the basin to a plane model of mechanics, based on various background data such as geological investigation. |
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