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Alternative TitleGlobal Ionospheric Response to the Geomagnetic Storm Event of April 6-7, 2000
张满莲; 北京8701信箱
Source Publication空间科学学报
Keyword2000年 磁暴 事件 响应 电离层暴 观测数据 经验模式 开始时间 时间滞后 研究结果 复相 测高仪 扰动 参考值 浓度比 f2层 全球性 台站 早期 效应 大气 磁扰 环流
Other AbstractA great geomagnetic storm occurred during April 6-7,2000,with the Dst index reaching a minimum value of about-320 nT.Using the ionosonde and digisonde data from about 25 stations distributed globally,the morphology of the ionospheric response to this geomagnetic storm event is studied by comparing the storm-time disturbed value of foFz with its quiet time reference value.To identify the mechanism responsible for the ionospheric disturbances during this event,a comparison is made between the ratio of disturbed to undisturbed values of Nn,F2 and of the neutral composition concentration ratio (no/nNZ).The results of data analysis showed that during the main and early recovery phases of the geomagnetic storm,a negative ionospheric F2 layer storm occurred globally The maximum negative deviation of foFz from its quiet time reference value occurred during the early recovery phase of the geomagnetic storm. During the late recovery phase of the geomagnetic storm, positive ionospheric disturbances occurred in some stations, particularly in those high latitude stations. It is showed that the main characteristics of the ionospheric disturbances during this geomagnetic storm event are consistent with that expected from the storm effects resulted from storm-induced thermospheric circulation system.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
张满莲,北京8701信箱. 全球电离层对2000年4月6-7日磁暴事件的响应[J]. 空间科学学报,2005,25(3):173-180.
APA 张满莲,&北京8701信箱.(2005).全球电离层对2000年4月6-7日磁暴事件的响应.空间科学学报,25(3),173-180.
MLA 张满莲,et al."全球电离层对2000年4月6-7日磁暴事件的响应".空间科学学报 25.3(2005):173-180.
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