• 首页关于本刊投稿须知期刊订阅编委会期刊合作查询检索English
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 41次   下载 126 本文二维码信息
码上扫一扫!
分享到: 微信 更多
基于改进多面函数和球面整体应变法计算华北中部地区地壳水平应变
彭钊1, 王宝锁1, 邵永谦2, 李恩建1
1.天津市地震局, 天津 300201;2.上海市地震局, 上海 200062
摘要:
华北地区的形变信息较弱,计算应变场时应在避免引入系统误差的同时进行精度评定。本文综合采用改进多面函数法和球面整体应变法构建无偏应变计算模型,基于CMONOC的GPS连续站时序数据计算华北中部地区的应变率,根据误差传播率计算相应误差,评估应变率计算的精度和可信度。结果表明,采用基于改进多面函数法和整体球面应变法的无偏应变计算模型计算弱应变地区应变率是可行的,且精度和可信度都较高。
关键词:  华北中部地区  GPS  改进多面函数法  球面整体应变法  精度评定
DOI:
分类号:P315
基金项目:中国地震局“三结合”课题(CEA-JC/3JH-170311)资助
Calculation of Crustal Horizontal Strain in Central North China Based on Refined Multiquadric Function and the Spherical Integral Strain Method
Peng Zhao1, Wang Baosuo1, Shao Yongqian2, Li Enjian1
1.Tianjin Earthquake Agency, Tianjin 300201, China;2.Shanghai Earthquake Agency, Shanghai 200062, China
Abstract:
The deformation information in North China is weak. It is necessary to avoid introducing systematic errors but to assess the accuracy in the calculation of the strain field. In this paper, the refined multiquadric function and the spherical integral strain method are used to construct an unbiased strain calculation model. The strain rate of Central North China is calculated based on the CMONOC GPS continuous station velocity data, and the accuracy and credibility of the strain rate are evaluated by the error propagation rate. The results show that it is feasible to calculate the strain rate using the unbiased strain calculation model based on the refined multiquadric function and the spherical integral strain method, and the accuracy and credibility are high.
Key words:  North China region  GPS  The refined multiquadric function  The spherical integral strain method  Accuracy assessment