| 中强震前形变固体潮汐资料短期信息的提取 |
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| 引用本文： | 张晶,张立.中强震前形变固体潮汐资料短期信息的提取[J].地震,2003,23(3):71-78. |
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| 作者姓名： | 张晶 张立 |
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| 作者单位： | 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 |
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| 基金项目： | 十五"国家科技攻关项目(01 05 05) |
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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。
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| 关 键 词： | 中强震 短期信息 形变观测 地震 信息提取 潮汐资料 潮汐参数 |
| 文章编号： | 1000-3274(2003)03-0071-08 |
| 修稿时间： | 2002年9月9日 |
Short-term anomaly extracted from tidal deformation data before moderately strong earthquakes |
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| 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 giv en, and the formula concerning tidal calculating method has been deduced and dev eloped. By calculating various deformation data in North China and Southwest Chi na regions, some tidal parameters such as tidal factors and loading and unloadin g response ratios (LURR) were extracted and analyzed. The short-term tidal anom aly in and around focal region was stressed. The characteristics of variation of these parameters were discussed. |
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| Keywords: | Deformation observation Tidal parameter Short-term anomaly |
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