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地震 ›› 2003, Vol. 23 ›› Issue (3): 71-78.

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中强震前形变固体潮汐资料短期信息的提取

张晶1, 张立2   

  1. 1.中国地震局分析预报中心, 北京 100036;
    2.云南省地震局, 云南昆明 650041
  • 收稿日期:2002-09-09 修回日期:2002-12-19 出版日期:2003-07-31 发布日期:2021-12-21
  • 作者简介:张晶(1963-), 女, 北京市人, 高级工程师, 主要从事地震预报等研究。
  • 基金资助:
    “ 十五” 国家科技攻关项目(01-05-05)

Short-term anomaly extracted from tidal deformation data before moderately strong earthquakes

ZHANG Jing1, ZHANG Li2   

  1. 1. Center for Analysi s and Predi ction, CSB, Beijing 100036, China;
    2. Seismologi cal Bureau of Yunnan Province, Kunming 650041, China
  • Received:2002-09-09 Revised:2002-12-19 Online:2003-07-31 Published:2021-12-21

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摘要： 分析了各种潮汐观测资料处理方法, 针对短期异常提取的要求, 提出了适合提取短期异常信息的潮汐资料处理方法, 对其计算公式进一步推导和展开。应用这些方法对华北地区和西南地区的重力、倾斜、应变等形变观测量进行了计算, 对地震前潮汐因子、时间滞后、响应比等潮汐参数的异常信息进行了提取与分析;突出了震源区附近的短期异常信息, 并分析总结其变化特征。

关键词: 形变观测, 潮汐参数, 短期信息

Abstract: In this paper, several methods to process tidal data were analyzed.In order to extract the short-term anomaly, the approaches to deal with tidal data were given, and the formula concerning tidal calculating method has been deduced and developed.By calculating various deformation data in North China and Southwest China regions, some tidal parameters such as tidal factors and loading and unloading response ratios (LURR)were extracted and analyzed.The short-term tidal anomaly in and around focal region was stressed.The characteristics of variation of these parameters were discussed.

Key words: Deformation observation, Tidal parameter, Short-term anomaly

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