| 多台站地磁观测资料综合处理的一种方法 |
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| 引用本文： | 吴国有,关华平.多台站地磁观测资料综合处理的一种方法[J].地震,1997,17(3):271-276. |
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| 作者姓名： | 吴国有 关华平 |
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| 作者单位： | [1]天津市地震局 [2]国家地震局分析预报中心 |
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| 基金项目： | 地震联合基金!94138 |
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| 摘 要： | 通过利用空间线性度方法，分析处理地磁场前兆观测资料，并从“场”的角度综合计算多台站的地磁场观测资料，确立地磁基本场的统一信息量－空间线性度ａ。分析处理华北地区多个台站１９７５￣１９９４年的地磁场前兆观测资料。结果表明，中强地震之前约１ａ左右的时间内，空间线性度ａ可能出现明显的下降异常，有些在临震前回升，因此地磁场空间线性度ａ有可能作为中强地震前兆预报的指标。
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| 关 键 词： | 地震综合预报 地磁场 地磁异常 地磁观测数据 |
A METHOD IN SYNTHETIC PROCESSING OF MULTISTATION GEOMAGNETIC DATA |
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| Wu Guoyou,Tian Shan,Liu Yunxiu.A METHOD IN SYNTHETIC PROCESSING OF MULTISTATION GEOMAGNETIC DATA[J].Earthquake,1997,17(3):271-276. |
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| Authors: | Wu Guoyou Tian Shan Liu Yunxiu |
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| Abstract: | By using the spatial linearity method, the geomagnetic precursory data have been an-alysed and processed. After calculating the multistation geomagnetic data, the unified in-formation value-spatial linearity (a) can be determined in geomagnetic field. Forexample, the spatial linearity method has been applied to the processing of multistationgeomagnetic data in North China from l975 to 1994. The results show that spatial linearityvalue displays the descending anomaly about one year before the occurrence moderatelystrong earthquakes. The spatia1 (a) of geomagnetic precursory field might be the short-and medium-term prediction index of the moderately strong earthquakes. |
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| Keywords: | Synthetic prediction of earthquake Geomagnetic field Geomagnetic vertical component Geomagnetic anomaly |
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