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Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya

文献类型：期刊论文

作者Li, Guozhu1; Ning, Baiqi1; Zhao, Biqiang1; Liu, Libo1; Liu, J. Y.2; Yumoto, K.3
刊名JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
出版日期2008-05-01
卷号70期号:7页码:1034-1045
关键词equatorial ionosphere ionospheric scintillations irregularities electric fields
ISSN号1364-6826
DOI10.1016/j.jastp.2008.01.003
文献子类Article
英文摘要The effects of geomagnetic storm on GPS ionospheric scintillations are studied here using GPS scintillation data recorded at Sanya (18.3 degrees N, 109.5 degrees E; geomagnetic: 7.6 degrees N, 180 degrees E), the southmost station in the Chinese longitude region. GPS scintillation/TEC and DMSP data are utilized to show the development of irregularities during the period year 2005 (solar minimum). Statistical analysis of K planetary index (Kp) and amplitude scintillation index (S4) indicates that most storms of the year did not trigger the scintillation occurrence at Sanya. However, cases of scintillation occurring during moderate and strong storm (Dst<-100) periods show clearly that the development of irregularities producing scintillations can be triggered by geomagnetic storms during the low scintillation occurrence season. The effects (trigger or not trigger/inhibit) depend on the maximum dDst/dt determined local time sector, and can be explained by the response of the equatorial vertical drift velocities to magnetospheric and ionospheric disturbance electric fields. For station Sanya, the maximum dDst/dt determined local time is near the noon (or post-midnight) sector for most storms of the year 2005, which inhibited (or did not trigger) the post-sunset (or post-midnight) scintillation occurrence and then led to the phenomena that the statistical results presented. (C) 2008 Elsevier Ltd. All rights reserved.
WOS关键词EQUATORIAL SPREAD-F ; ZONAL ELECTRIC-FIELDS ; MAGNETIC STORMS ; RADAR OBSERVATIONS ; MAJOR STORM ; IRREGULARITIES ; DISTURBANCES ; GENERATION ; FLUCTUATIONS ; LATITUDES
WOS研究方向Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000255959200008
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://ir.iggcas.ac.cn/handle/132A11/69866]  
专题中国科学院地质与地球物理研究所
通讯作者Li, Guozhu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Natl Cent Univ, Inst Space Sci, Chungli 32054, Taiwan
3.Kyushu Univ, Space Environm Res Ctr, Fukuoka 812, Japan
推荐引用方式
GB/T 7714		 Li, Guozhu,Ning, Baiqi,Zhao, Biqiang,et al. Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya[J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,2008,70(7):1034-1045.
APA Li, Guozhu,Ning, Baiqi,Zhao, Biqiang,Liu, Libo,Liu, J. Y.,&Yumoto, K..(2008).Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,70(7),1034-1045.
MLA Li, Guozhu,et al."Effects of geomagnetic storm on GPS ionospheric scintillations at Sanya".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 70.7(2008):1034-1045.

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来源：地质与地球物理研究所

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