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地震 ›› 2015, Vol. 35 ›› Issue (2): 139-147.

• • 上一篇    

基于因子分析和季节趋势滤波方法的地球物理因子识别以唐山台跨断层数据为例

李文静   

  1. 中国地震局地壳应力研究所, 北京 100085
  • 收稿日期:2014-05-19 出版日期:2015-04-30 发布日期:2020-06-24
  • 作者简介:李文静(1982-), 女, 天津市人, 工程师, 主要从事大地形变观测和数据处理。
  • 基金资助:
    中国地震局地震预测研究所基本科研业务重点项目课题(2013IES00105)

Geophysical Factor Recognition based on Factor Analysis and STL Example from Tangshan Short-baseline Data

LI Wen-jing   

  1. Tangshan Station, First Monitoring Center, CEA, Hebei Tangshan 063001, China
  • Received:2014-05-19 Online:2015-04-30 Published:2020-06-24

摘要: 利用因子分析可以有效地找出多个变量的公共因子, 找出隐含因素; 基于季节趋势滤波方法, 可以分析序列的周期成分和趋势变化特征, 结合区域地震特征, 确定序列的物理意义。 本文将这两种方法结合, 提出了完整的地球物理因子识别方法, 并将其应用于唐山地震台跨断层形变短基线序列, 获得了具有物理意义的三个公共因子, 即远场构造因子、 台站因子和近场构造因子。

关键词: 地球物理因子识别, 因子分析, 季节趋势滤波方法, 唐山短基线观测

Abstract: Based on factor analysis method, we can effectively find out the common factors in multiple variables and the hidden controlling factors. Furthermore, we can achieve the period components and trending change feature of the common factor sequence by the Seasonal-Trend Lowes (STL) method and confirm the geophysical meaning by connecting with other information. In this paper, we brought out the geophysical factor recognition method and applied it in the Tangshan short-baseline observation by combining with the two methods. We recognized three geophysical factors, which are far-field geological factor, stationary factor and near-field geological factor in the sequence.

Key words: Geophysical factor recognition, STL, Factor analysis, Tangshan short-baseline observation

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