globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA024805
Scopus记录号: 2-s2.0-85044293097
论文题名:
Experimental Evidence on the Dependence of the Standard GPS Phase Scintillation Index on the Ionospheric Plasma Drift Around Noon Sector of the Polar Ionosphere
作者: Wang Y.; Zhang Q.-H.; Jayachandran P.T.; Moen J.; Xing Z.-Y.; Chadwick R.; Ma Y.-Z.; Ruohoniemi J.M.; Lester M.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期:3
起始页码: 2370
结束页码: 2378
语种: 英语
英文关键词: Fresnel frequency ; GNSS ; ionospheric scintillation ; plasma drift velocity ; polar ionosphere ; standard scintillation indices
英文摘要: First experimental proof of a clear and strong dependence of the standard phase scintillation index (σφ) derived using Global Positioning System measurements on the ionospheric plasma flow around the noon sector of polar ionosphere is presented. σφ shows a strong linear dependence on the plasma drift speed measured by the Super Dual Auroral Radar Network radars, whereas the amplitude scintillation index (S4) does not. This observed dependence can be explained as a consequence of Fresnel frequency dependence of the relative drift and the used constant cutoff frequency (0.1 Hz) to detrend the data for obtaining standard σφ. The lack of dependence of S4 on the drift speed possibly eliminates the plasma instability mechanism(s) involved as a cause of the dependence. These observations further confirm that the standard phase scintillation index is much more sensitive to plasma flow; therefore, utmost care must be taken when identifying phase scintillation (diffractive phase variations) from refractive (deterministic) phase variations, especially in the polar region where the ionospheric plasma drift is much larger than in equatorial and midlatitude regions. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114317
Appears in Collections:气候减缓与适应

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作者单位: Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China; Physics Department, University of New Brunswick, Fredericton, NB, Canada; Department of Physics, University of Oslo, Oslo, Norway; Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, United States; Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom

Recommended Citation:
Wang Y.,Zhang Q.-H.,Jayachandran P.T.,et al. Experimental Evidence on the Dependence of the Standard GPS Phase Scintillation Index on the Ionospheric Plasma Drift Around Noon Sector of the Polar Ionosphere[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(3)
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