【摘要】 利用GPS电离层层析技术对苏门答腊岛上空4月1日至15日的电离层三维电子密度空间分布进行重建,采用2倍标准差方法对反演出的电子密度值进行异常探测。在排除太阳活动和地磁干扰的情况下,发现在11日UT10:00,13日UT6:00,14日UT6:00—14:00,15日UT14:00—16:00时间段出现较大范围的电离层电子密度异常,且分布在震中上空附近,初步认为该异常与4月苏门答腊岛地震有关。更多还原

【Abstract】 Using the technology of ionospheric tomography,three-dimensional ionospheric electronic density maps from April 1st to 15th in 2012 were reconstructed near the epicenter of Sumatra,The electron density anomaly detection is based on the doubled standard deviation.After excluding the solar activity and geomagnetic disturbance,the abnormal ionospheric electron density happened at the UT 10:00 on 11th,UT 6:00 on 13th,UT 6:00-14:00 on 14th,UT 14:00-16:00 on 15th,and they distributed mainly near the epicenter.The anomalies are likely a premise of the Sumatra earthquake in April.更多还原