【摘要】 利用位于日本2011年3月11日9.0级地震区域的三个IGS跟踪站的观测数据,计算得到了地震前后四天的电离层总电子含量(TEC)值。通过分析发现:地震当天出现了明显的电离层TEC扰动异常现象,扰动异常随测站离震源距离的加大而显著减弱;平均电离层TEC在发生地震后的一段时间内显著升高。更多还原

【Abstract】 By use of the data from three IGS stations located in the area of Mw9.0 Japanese earthquake,the total ionospheric electronic content(TEC) values in four days before and after the earthquake were obtained.There was an explicit ionospheric disturbance phenomenon on that day by analyzing and comparing the computational results.The TEC disturbance phenomenon can be found from different satellite data,which become insignificant with increased distance between the stations and epicenter.A four-day average TEC values before and after the earthquake are computed.The results indicate a significant increase of mean TEC for a few hours after the earthquake.更多还原