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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/27704


    Title: THE PHASE RELATIONSHIP BETWEEN ULF GEOMAGNETIC-PULSATIONS AND HF DOPPLER FREQUENCY-SHIFT OSCILLATIONS ON MARCH 24, 1991
    Authors: LIU,JY;HUANG,YN;BERKEY,FT
    Contributors: 太空及遙測研究中心
    Keywords: MID-LATITUDES;MODEL
    Date: 1993
    Issue Date: 2010-06-29 18:52:37 (UTC+8)
    Publisher: 中央大學
    Abstract: Previous theoretical models showed that, in the middle geomagnetic latitudes the oscillations in the Doppler frequency shift lag and lead the H component of ULF pulsations field on the ground, owing to the advection and compression mechanisms by 90-degrees, respectively. On March 24, 1991, measurements obtained from a CW-HF Doppler sounding system and a fluxgate magnetometer show phase differences of 15-degrees-77-degrees between the Doppler frequency shift oscillations and the H component of ULF pulsations field at ground level, which indicates that the Doppler velocity arises from predominant changes due to the compression mechanism.
    Relation: JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY
    Appears in Collections:[太空及遙測研究中心] 期刊論文

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