摘要
本文利用GNSS等观测所获得的地壳位移速度结果并应用数值逼近理论,提出了具有解析式的形变强度分析与计算方法。根据形变的性质或类型将它们分别定义为形变强度、水平形变强度、水平剪切形变强度、水平张压形变强度、垂直剪切形变强度。文中最后以GNSS1999—2007年观测数据所产生的运动结果为例,分析了川滇地区的地壳运动和形变,并给出了不同性质形变强度的空间变化结果。
In this paper,we proposed an analytical method for calculating deformation intensity based on the theory of numerical approximation and the result of crust deformation velocity obtained from GNSS observation.In terms of the characters or types of deformation,we defined deformation intensity,horizontal deformation intensity,horizontal and shear deformation intensity,horizontal tensile and press deformation intensity,and vertical and shear deformation intensity.As examples,we calculated the movement results from the data measured by GNSS 1999—2007,and the charactertics of crustal movement and deformation in Sichuan-Yunnan region are analyzed.The different nature of the spatial variation of intensity of deformation is given.
出处
《地震》
CSCD
北大核心
2010年第2期112-120,共9页
Earthquake
基金
中国地震局"中国大陆7
8级地震中长期危险性预测研究"
"强化华北地区强震监视跟踪"
"十一五"国家科技支撑课题(2006BAC01B03-01-01)
关键词
GNSS
地壳形变
形变强度
形变场描述
数值逼近
GNSS
Crust deformation
Deformation intensity
Description of deformation field
Numerical approximation
