基于GPS的电离层行扰探测

在基于电离层薄层模型的情况下,利用GPS探测技术研究了电离层在2003年3月31日发生扰动的事件.研究结果表明:在2003年3月31日期间发生了两类大尺度电离层行扰(TID),一类可能是由于磁暴期间极光区极光电急流的焦耳加热所激发的,其扰动幅度约为1.4TECU,扰动速度约为350m/s,扰动主周期约为40min,基本是向赤道方向传播的;另一类可能是由东南沿海的热带风暴所激发的,其扰动幅度为1.11 TECU,扰动速度为479 m/s,扰动主周期约为40min,沿西北方向传播.

TID Detect Based on the GPS

Under the condition of the ionosphere lamina model, the paper studies the ionosphere disturbance at March 31, 2003 by GPS detect technology. The study indicates that there happened two kinds of TIDs at March 31, 2003 in large scale. The one may be brought by Joule heating of aurora electrical current at aurora zone at the period of magnetic storm with the disturbance amplitude of 1.4 TECU, disturbance speed of 350m/s and main disturbance cycle of 40 minutes, and its disturbance direction is to equator-ward. The other was produced possibly by topic storm along south-east sea zone of China, its disturbance is 1.11 TECU, disturbance speed 479m/s, main disturbance cycle 40 minutes, and promulgation along north-west ward.