从全球GPS网络数据推导的总电子含量扰动的行波包
Traveling wave packets of total electron content disturbances as deduced from global GPS network data
摘要:
我们发现了一类新的中纬度中尺度电离层行波扰动,即总电子含量(TEC)扰动的行波包(TWP)。第一次,TWP的形态是105天。利用全球定位系统(GPS)干涉测量技术,以2001年10月18日美国加利福尼亚州上空最显著的TWP现象为例,对TWP的时空特性进行了详细的分析。TWP的速度和方向对应的中纬度MS TID先前从分析HF无线电信号的相位特性,以及来自地球静止卫星和离散宇宙射电源的信号获得。
英文摘要:
We identified a new class of mid-latitude medium-scale traveling ionospheric disturbances (MS TIDs), viz. traveling wave packets (TWPs) of total electron content (TEC) disturbances. For the first time, the morphology of TWPs is presented for 105 days. Using the technique of GPS interferometry of TIDs we carried out a detailed analysis of the spatial-temporal properties of TWPs by considering an example of the most conspicuous manifestation of TWPs on October 18, 2001 over California, USA. The velocity and direction of TWPs correspond to those of mid-latitude MS TIDs obtained previously from analyzing the phase characteristics of HF radio signals as well as signals from geostationary satellites and discrete cosmic radio sources.
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