【摘要】 利用昌黎、白家疃 1 972～ 1 997年的磁变仪资料 ,计算了水平场台际转换函数和单台垂直场转换函数 .通过对转换函数变化全过程的分析 ,注意到仅仅水平场转换函数在唐山地震之前有明显的短期前兆 .这给地震预报提供了一个新的可能捕捉到短期前兆的手段 .更多还原

【Abstract】 In this paper, using the variometer data of Changli station and Baijiatuan station from 1972 to 1997, the inter station transfer functions of horizontal field and the single station transfer functions of vertical field have been calculated. With analyzing the whole changing process of the transfer functions, we have discovered that only the horizontal field transfer functions arose obvious short term precursors before Tangshan earthquake. This fact may provide a new method for short term prediction of earthquake.更多还原