Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/4974| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Xu, T.; School of Science, Xidian University, Xi’an, China | en |
| dc.contributor.authorall | Wu, Z.; School of Science, Xidian University, Xi’an, China | en |
| dc.contributor.authorall | Wu, J.; National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Beijing, China | en |
| dc.contributor.authorall | Wei, G.; School of Science, Southwest Petroleum University, Chengdu, China | en |
| dc.contributor.authorall | Feng, J.; China Research Institute of Radiowave Propagation, Qingdao, China | en |
| dc.date.accessioned | 2009-03-26T08:04:32Z | en |
| dc.date.available | 2009-03-26T08:04:32Z | en |
| dc.date.issued | 2008-08 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/4974 | en |
| dc.description.abstract | Hourly values of the critical frequency of the ionospheric F region, foF2, obtained at Chongqing ionospheric observatory (geographic 29.50N, 106.40E), China, during the interval of 1977 to 1997 (solar cycle 21 and 22) have been used to investigate the dependence of the monthly median foF2 on solar activity and geomagnetic activity, and to construct single-station model (SSM) using Fourier expansion. The results of the present analysis show that there is a significant nonlinear relationship between monthly median foF2 and sunspot number R especially at daytime in each month and nighttime in summer. Furthermore, introducing geomagnetic index Ap further improves the description of variation of monthly median foF2, and the standard deviations decrease also dependently on time and month. Thus the complex influence of solar activity and geomagnetic activity may be approximately expressed by a general multiple nonlinear function at Chongqing station, China. The basic aim of this paper is to show that considering the nonlinear influence both of solar activity and geomagnetic activity improves the monthly median model. The SSM is in good agreement with observations, with standard deviation 0.65MHz, while IRI model has a lower accuracy with standard deviation 0.96MHz. | en |
| dc.language.iso | English | en |
| dc.relation.ispartof | Annals of Geophysics | en |
| dc.relation.ispartofseries | 4/51 (2008) | en |
| dc.subject | solar cycle variation | en |
| dc.subject | single station model | en |
| dc.subject | geomagnetic index | en |
| dc.subject | monthly median foF2 | en |
| dc.title | A single-station spectral model of the monthly median foF2 over Chongqing, China | en |
| dc.type | article | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.subject.INGV | 04. Solid Earth::04.05. Geomagnetism::04.05.99. General or miscellaneous | en |
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| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | open | en |
| dc.contributor.author | Xu, T. | en |
| dc.contributor.author | Wu, Z. | en |
| dc.contributor.author | Wu, J. | en |
| dc.contributor.author | Wei, G. | en |
| dc.contributor.author | Feng, J. | en |
| dc.contributor.department | School of Science, Xidian University, Xi’an, China | en |
| dc.contributor.department | School of Science, Xidian University, Xi’an, China | en |
| dc.contributor.department | National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Beijing, China | en |
| dc.contributor.department | School of Science, Southwest Petroleum University, Chengdu, China | en |
| dc.contributor.department | China Research Institute of Radiowave Propagation, Qingdao, China | en |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | open | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | School of Science, Xidian University, Xi’an, China | - |
| crisitem.author.dept | School of Science, Xidian University, Xi’an, China | - |
| crisitem.author.dept | National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Beijing, China | - |
| crisitem.author.dept | School of Science, Southwest Petroleum University, Chengdu, China | - |
| crisitem.author.dept | China Research Institute of Radiowave Propagation, Qingdao, China | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| Appears in Collections: | Annals of Geophysics | |
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