Storm-time ionospheric disturbances monitored by GPS beacon measurements |
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Authors: | Pei Xiao-hong Yu Sheng-bing Xu Ji-sheng Ma Shu-ying |
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Institution: | (1) College of Electronic Information, Wuhan University, 430072 Wuhan, China |
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Abstract: | The Total Electron Content (TEC) during three great storms, from April to August 2000, was collected by means of a GPS receiver
located in Jingzhou (30.4° N, 112.2° E). The time-latitude-dependent features of ionospheric storms are identified using TEC
difference images based on the deviations of TEC during storm relative to quiet time. The responses of ionospheric TEC to
magnetic storms were analyzed. The results show that: 1) In middle and low latitude, ionospheric storms effects are more apparent
in local day time than at night: 2) Ionospheric storm effects are more dominant near the hump of the equatorial anomaly region
than in other regions of TEC measurements; 3) The positive effects during the main phase of ionospheric storm may be caused
by electric fields in low latitude; 4) During the recovery period of ionospheric storm, the negative phase of storm may be
due to the perturbation of the neutral gas composition.
Foundation item: Supported by the National Natural Science Foundation of China (49984001)
Biography: Pei Xiao-hong (1977-), male, Master candidate, research direction: studying ionosphere on GPS beacons. |
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Keywords: | global positioning system ionosphere total electron content magnetic storm ionospheric storm |
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