【摘要】 采用统一的分析方法和标准从北天山地区的地磁场总强度资料中提取异常信息．结果表明，在区内发生的一些中强地震前，震中周围的台站存在较明显的中、短期异常．更多还原

【Abstract】 In this paper,an unified approach on the total magnetic intensity data analysis was des cribed to extract abnormal information along the North Tianshan region. The results showed that before some of the moderate strong earthquakes in the region,obvious anomalies of middle and short term have been caught by the stations near epicentral areas.更多还原