【摘要】 蒙城地震台地磁偏角日均值自1999年7月起出现了趋势性变化,台站观测人员搜集整理了周边泰安、郑州、佘山、武汉地磁台的三分量数据,应用对比、相关分析等方法,研究了此变化,认为是地磁场的长期变,非地震趋势异常。更多还原

【Abstract】 Since July 1999, the Geomagnetism declination angle daily mean has been emerged trend variation on Mengcheng Station. The observers of the station collected and processed the data of the tri-component of the circumjacent geomagnetic stations of Tai an, Zhengzhou, Sheshan and Wuhan; applying the methods of comparable analysis, relative direction analysis, etc to analyze and study this change. It is concluded that the variation is not the earthquake trend anomaly, but a long period variation of geomagnetic field.更多还原