...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Pure and Applied Geophysics >Using eigenpattern analysis to constrain seasonal signals in southern California
【24h】

Using eigenpattern analysis to constrain seasonal signals in southern California

机译：使用特征模式分析约束南加州的季节性信号

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Earthquake fault systems are now thought to be an example ora complex nonlinear system (BAKE et al., 1987; RUNDLE and KLEIN, 1995). The spatial and temporal complexity of this system translates into a similar complexity in the surface expression of the underlying physics, including deformation and seismicity. Here we show that a new pattern dynamic methodology can be used to define a unique, finite set of deformation patterns for the Southern California Integrated GPS Network (SCIGN). Similar in nature to the empirical orthogonal functions historically employed in the analysis of atmospheric and oceanographic phenomena (PREISENDORFER, 1988), the method derives the eigenvalues and eigenstates from the diagonalization of the correlation matrix using a Karhunen-Loeve expansion (KLE) (FUKUNAGA, 1970; RUNDLE et al., 2000; TIAMPO et al., 2002). This KLE technique may be used to determine the important modes in both time and space for the southern California GPS data, modes that potentially include such time-dependent signals as plate velocities, viscoelasticity, and seasonal effects. Here we attempt to characterize several of the seasonal vertical signals on various spatial scales. These, in turn, can be used to better model geophysical signals of interest such as coseismic deformation, viscoelastic effects, and creep, as well as provide data assimilation and model verification for large-scale numerical simulations of southern California.
机译：现在认为地震断层系统是一个复杂的非线性系统的例子（BAKE等，1987; RUNDLE和KLEIN，1995）。该系统的时空复杂性转化为基础物理在表面表达中的类似复杂性，包括变形和地震活动性。在这里，我们展示了一种新的模式动态方法可以用于为南加州集成GPS网络（SCIGN）定义一组独特的变形模式。本质上与历史上用于分析大气和海洋现象的经验正交函数相似（PREISENDORFER，1988年），该方法使用Karhunen-Loeve展开（KLE）从相关矩阵的对角化中导出特征值和本征态（FUKUNAGA， 1970; RUNDLE等，2000; TIAMPO等，2002）。该KLE技术可用于确定加利福尼亚南部GPS数据在时间和空间上的重要模式，这些模式可能包括诸如板速度，粘弹性和季节效应之类的随时间变化的信号。在这里，我们尝试表征各种空间尺度上的几个季节性垂直信号。这些反过来又可以用来更好地模拟感兴趣的地球物理信号，例如同震变形，粘弹性效应和蠕变，以及为南加州的大规模数值模拟提供数据同化和模型验证。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号