The Phase Relationship between ULF Geomagnetic Pulsations and HF Doppler Frequency Shift Oscillations on March 24, 1991

J. Y. Liu; Y. N. Huang; F. T. Berkey

doi:10.5636/jgg.45.109

The Phase Relationship between ULF Geomagnetic Pulsations and HF Doppler Frequency Shift Oscillations on March 24, 1991

J. Y. Liu
, Y. N. Huang
, F. T. Berkey

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

11 引文斯高帕斯（Scopus）

摘要

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°, respectively. On March 24, 1991, measurements obtained from a CW-HF Doppler sounding system and a fluxgate magnetometer show phase differences of 15°‒77° 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.

原文	???core.languages.en_GB???
頁（從 - 到）	109-114
頁數	6
期刊	Journal of Geomagnetism and Geoelectricity
卷	45
發行號	1
DOIs	https://doi.org/10.5636/jgg.45.109
出版狀態	已出版 - 1993

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10.5636/jgg.45.109

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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°, respectively. On March 24, 1991, measurements obtained from a CW-HF Doppler sounding system and a fluxgate magnetometer show phase differences of 15°‒77° 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.",

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AB - 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°, respectively. On March 24, 1991, measurements obtained from a CW-HF Doppler sounding system and a fluxgate magnetometer show phase differences of 15°‒77° 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.

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The Phase Relationship between ULF Geomagnetic Pulsations and HF Doppler Frequency Shift Oscillations on March 24, 1991

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