【摘要】 本文采用差值、相关分析、谐波分析等方法处理了1985年8月23日新疆乌恰7.4级地震前的地磁观测资料,发现喀什地磁台存在3—4个月的中短期异常,但与国内某些大震震例相比,异常幅度偏小。文章对此作了初步讨论。更多还原

【Abstract】 The data of geomagnetic observation before Wuqia earthquake (Ms = 7.4) on Aug, 23, 1985 in Xinjiang were handled with several methods such as difference values analysis, correlation analysis and harmonic analysis. It was found out that the vertical intensity of Kashi geomagnetic station had got a mid-shorfterm anomaly of 3-4 months, but the anomalous amplitude was somewhat smaller when compared with the examples of some of the large earthquakes in the country.更多还原