【摘要】 以太阳风为加卸载 ,将磁暴过程作为地磁场对太阳风的加卸载响应 ,取地磁垂直分量日变幅 (ΔZ)数据 ,计算、分析和研究磁暴场暴时扰日变化的响应比值。本文分析研究了云南 6个地磁台在 1995年 1月～2 0 0 1年 12月间垂直分量日变幅响应比值P (Z)的变化 ,发现在云南及邻区M≥ 5级地震前 ,响应比值出现P≥P (Z)高值异常 ,对预报未来 1～ 3个月内地震的发生有短临显示意义。更多还原

【Abstract】 Taking the magnetic storm as a loading-and-unloading response to solar wind by the geomagnetic field , the response ratios of the daily magnetic distur bance variation at the time of the storm is calculated by using the data of dail y ampitude variation (ΔZ).In this paper,the vertical componen ts ratio of daily amplitude variation P(Z) from January 1995 to December 2001 is calculated and analyzed byusing six geomagnetic stations in Yunnan area. As a result, a phenomenon is found that there exists the high resp onse ratio anomaly (namely P≥P(Z) before the occurrence of M≥5 earthquakes in Yunnan Province and its neig hbouring regions. This is significant to the short-term and impending earthquake prediction in 1 to 3 months in future.更多还原