大华北地壳动力学参数及三维有限元模型的建立  

CRUSTAL DYNAMIC PARAMETERS AND 3D FINITE ELEMENT MODEL OF NORTH CHINA

作　　者：詹自敏[1] 陈连旺[1] 陆远忠[1] 

机构地区：[1]中国地震局地壳应力研究所,北京100085

出　　处：《大地测量与地球动力学》2011年第B06期28-32,共5页Journal of Geodesy and Geodynamics

基　　金：中央级公益性科研院所基本科研业务专项重点项目(ZDJ2009-06);中央级公益性科研院所基本科研业务专项重大项目(ZDJ2007-01)

摘　　要：利用华北地区的断层数据、高程数据、波速结构数据、弹性常数以及多种流变机制参数,建立大华北地区三维有限元数值模型,并通过给每个单元赋属性的方法,实现物性参数的连续变化。以模型边界附近实测GPS数据插值作为边界位移条件,进行数值模拟。模拟结果表明,大华北区域位移场与实测位移场基本一致。Using the data of fault and terrain, seismic velocity structure and rarious rheological parameters of North China, to build a crustal dynamic parameters library and build a 3D finite element numerical simulation model of this region based on the library. Different from other models, an attribute is set for every element, so that the variation of attribute is continuous. By using the interpolated GPS data as displacement boundary conditions, the calculated displacement field is similar to the observational displacement field. This model has great significance for crustal dynamics study, for example, the research on the stress and strain fields of spatio-temporal evolution in North China, the characteristics of strong earthquakes activities, and the analysis of stress field after strong earthquakes and so on.

关 键 词：华北 有限元模型 数值模拟 GPS 地壳动力学 

分 类 号：P315.8[天文地球—地震学]