Variability of the behavior of the bottomside (B0, B1) parameters obtained from the ground-based ionograms at China's low latitude station

	Variability of the behavior of the bottomside (B0, B1) parameters obtained from the ground-based ionograms at China's low latitude station
	Zhang, M. L. ; Wan, W. ; Liu, L. ; Shi, J. K.
刊名	Advances in Space Research
	2008
卷号	42 期号:4 页码:695-702
关键词	low latitude ionosphere ionospheric variability IRI model ionospheric modeling international reference ionosphere profile parameters iri-2001 model solar-activity midlatitude
ISSN号	0273-1177
通讯作者	北京8701信箱
英文摘要	In this paper, data of (B0, B1) parameters deduced from the electron density profiles that are inverted from the ionograms recorded at Hainan (19.4 degrees N, 109.0 degrees E), China during a three year period from March 2002 to February 2005 are used to study the diurnal and seasonal variation of (B0, B1) parameters at low latitude. The observational results are compared with the IR12001 model predictions. Variability study of (B0, B1) in terms of percentage ratio of the inter-quartiles to the median values and correlative analysis between (B0, B 1) parameters and other ionospheric characteristics such as hmF2 and M(3000)F2 are also made. Our present study showed that: (1) for daytime hours, the IR12001 model results with new table option (B0_Tab) is in a better agreement with the observational results (B0_Obs) than the JR12001 model results with Gulyaeva option (B0_Gul) for summer season, whereas B0_Gul is in a better agreement with B0_Obs than B0_Tab for winter season. For nighttime, in general, B0_Gul is in a better agreement with B0_Obs than B0_Tab. For other occasions, both B0_Tab and B0_Gul showed some systematic deviations from the observational ones. Moreover, the deviations of B0_Tab and B0_Gul from B0_Obs showed opposite trends; (2) the monthly upper (lower) quartiles of (B0, B1) parameter showed a good linear relationship with the monthly median values, this makes it possible to do the regression analysis between the monthly upper (lower) quartiles and the monthly median values, which can give a measure of the variability of these parameters. In terms of the percentage ratio of the inter-quartiles to the median values, the variability of 130 showed a diurnal variation ranging between 22% and 36% with maximum value occurring at pre-sunrise hours, whereas the variability of B1 showed a diurnal variation ranging between 15% and 30% with higher value by daytime than at night; (3) B0 shows high linear correlative relationships with hmF2 and M(3000)F2 for most of the local time period of a day except for a few hours around midnight, whereas B1 showed high linear correlations with B0, hmF2 for daytime hours, but not for nighttime hours. This suggests that it maybe is possible to obtain the synthetic database of (B0, B1) parameter or to construct the model of (B0, B1) using database of hmF2 or M(3000)F2 which is much easier to obtain from experimental measurements.
学科主题	空间物理
收录类别	SCI
原文出处	http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6V3S-4P9625D-3-H&_cdi=5738&_user=1999492&_orig=search&_coverDate=08%2F18%2F2008&_sk=999579995&view=c&wchp=dGLzVlz-zSkzS&md5=9eec631fbef8d7c7a822996da419c239&ie=/sdarticle.pdf
语种	英语
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1111]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Zhang, M. L.,Wan, W.,Liu, L.,et al. Variability of the behavior of the bottomside (B0, B1) parameters obtained from the ground-based ionograms at China's low latitude station[J]. Advances in Space Research,2008,42(4):695-702.
APA	Zhang, M. L.,Wan, W.,Liu, L.,&Shi, J. K..(2008).Variability of the behavior of the bottomside (B0, B1) parameters obtained from the ground-based ionograms at China's low latitude station.Advances in Space Research,42(4),695-702.
MLA	Zhang, M. L.,et al."Variability of the behavior of the bottomside (B0, B1) parameters obtained from the ground-based ionograms at China's low latitude station".Advances in Space Research 42.4(2008):695-702.