| 大震前地磁场时空间线性度变化的初步研究 |
| |
| 引用本文： | 陈化然,冯德益.大震前地磁场时空间线性度变化的初步研究[J].地震地磁观测与研究,1994(5). |
| |
| 作者姓名： | 陈化然 冯德益 |
| |
| 作者单位： | 天津市地震局 |
| |
| 摘 要： | 把用来分析地震波波形的时间线性度和空间线性度两种方法，应用到地磁资料分析当中，具体分析处理了１９７６年７月２８日唐山Ｍｓ７．８地震和１９８９年１０月１９日大同Ｍｓ６．１地震前后地磁场资料，并对这两次地震前后地磁时空线性度变化情况进行了研究。所得结果表明：①较大地震前地磁场的时空线性度均可能呈现出较明显的下降异常变化，有些在震前回升，②各分量的时空线性度呈现异常的时间基本上同步，并与波速异常发展趋势基本相符。
|
| 关 键 词： | 时间线性度，空间线性度，地磁场，震磁效应，地震预报 |
The preliminary studies on temporal and spatial linearity variations of geomagnetic field before large earthquakes |
| |
| Chen Huaran and Feng Deyi.The preliminary studies on temporal and spatial linearity variations of geomagnetic field before large earthquakes[J].Seismological and Geomagnetic Observation and Research,1994(5). |
| |
| Authors: | Chen Huaran and Feng Deyi |
| |
| Abstract: | In this paper, by using the methods of temporal linearity and spatial linearity, thegeomagnetic data before and after July 28, 1976 Tangshan earthquake (Ms=7. 8)and October 19, 1989 Datong earthquake (MS=6.1) were analysed and processed. Then, the anomalous variations in the temporal and spatial linearity before andafter both earthquakes were studied. The results obtained are as follows: Before bothlarge earthquakes the more remarkable decrease-type anomalous variations in the temporal and spatial linearity of geomagnetic field have been presented. The precursory anomalous times of temporal and spatial linearity are nearly synchronous and consistent withthe seismic--wave velocity anomalies. |
| |
| Keywords: | temporal linearity spatial linearity geomagnetic field shocked-magnetic effect earthquake prediction |
| 本文献已被 CNKI 等数据库收录！ |
