Case study of apparent longitudinal differences of spread F occurrence for two midlatitude stations

	Case study of apparent longitudinal differences of spread F occurrence for two midlatitude stations
	Huang, W. Q.; Xiao, Z.; Xiao, S. G.; Zhang, D. H.; Hao, Y. Q.; Suo, Y. C.
刊名	RADIO SCIENCE
	2011
卷号	46 页码:RS1015
ISSN号	0048-6604
通讯作者	Huang, WQ (reprint author), Peking Univ, Dept Geophys, Beijing 100871, Peoples R China.
中文摘要	Spread F is a widely studied subject, and the occurrence of spread F is affected by many factors. One of these factors is acoustic gravity waves (AGWs) which are very important in seeding spread F. Since most of the AGWs in the ionosphere originate from the lower atmosphere, there should be some regional features of spread F due to the different meteorological or ground conditions immediately beneath the local ionosphere. In this paper, a data set with a time coverage of one solar cycle from two Chinese stations located at exactly the same latitude and a 38 degrees separation in longitude, and having sharp contrasts of ground meteorological conditions, are used to make comparisons of spread F occurrence rates. The results showed that the total number of occurrence or occurrence percentage at Changchun station (very near the coast) is always much higher than that at Urumqi station (in the very center of the Europe-Asia continent). The annual maxima of spread F occurrence are in summer and winter. Other features of spread F occurrence at these two stations are in agreement with known properties of spread F. However, the great difference of occurrence frequency between the two stations is striking and worth further studying.
英文摘要	Spread F is a widely studied subject, and the occurrence of spread F is affected by many factors. One of these factors is acoustic gravity waves (AGWs) which are very important in seeding spread F. Since most of the AGWs in the ionosphere originate from the lower atmosphere, there should be some regional features of spread F due to the different meteorological or ground conditions immediately beneath the local ionosphere. In this paper, a data set with a time coverage of one solar cycle from two Chinese stations located at exactly the same latitude and a 38 degrees separation in longitude, and having sharp contrasts of ground meteorological conditions, are used to make comparisons of spread F occurrence rates. The results showed that the total number of occurrence or occurrence percentage at Changchun station (very near the coast) is always much higher than that at Urumqi station (in the very center of the Europe-Asia continent). The annual maxima of spread F occurrence are in summer and winter. Other features of spread F occurrence at these two stations are in agreement with known properties of spread F. However, the great difference of occurrence frequency between the two stations is striking and worth further studying.
学科主题	空间物理
收录类别	SCI ; EI
资助信息	NSFC [40636032, 40774082, 40974091]; Specialized Research Fund for State Key Laboratories
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/3256]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Huang, W. Q.,Xiao, Z.,Xiao, S. G.,et al. Case study of apparent longitudinal differences of spread F occurrence for two midlatitude stations[J]. RADIO SCIENCE,2011,46:RS1015.
APA	Huang, W. Q.,Xiao, Z.,Xiao, S. G.,Zhang, D. H.,Hao, Y. Q.,&Suo, Y. C..(2011).Case study of apparent longitudinal differences of spread F occurrence for two midlatitude stations.RADIO SCIENCE,46,RS1015.
MLA	Huang, W. Q.,et al."Case study of apparent longitudinal differences of spread F occurrence for two midlatitude stations".RADIO SCIENCE 46(2011):RS1015.