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Effects of St Patrick’s Day Intervals Geomagnetic Storms on the Accuracy of GNSS Positioning and Total Electron Content over Nigeria | ||
| فیزیک زمین و فضا | ||
| مقاله 14، دوره 45، شماره 4، بهمن 1398، صفحه 181-188 اصل مقاله (722.24 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jesphys.2019.259772.1007014 | ||
| نویسندگان | ||
| Joseph Omojola* ؛ Taiwo Adewumi | ||
| Assistant Professor, Department of Physics, Faculty of Science, Federal University, Lafia, Nigeria | ||
| چکیده | ||
| Total electron content (TEC) and GNSS positioning error over two Nigeria GNSS stations (CLBR: Latitude; 4.9503°E, Longitude; 8.3514°N, FUTY: Latitude; 9.3497°E, Longitude; 12.4978°N) were studied during the geomagnetic storms of March 17, 2015 minimum Dst (Disturbed storm time) -223nT and that of March 17, 2013 minimum Dst of -132nT (the St. Patrick’s Day intervals); TEC was estimated using GPS Gopi TEC analysis software over the two stations during the storms period and the selected international quiet day used as reference. Understanding TEC variation in the equatorial ionosphere during geomagnetic storm will enable adequate prediction of GNSS positioning accuracy and correction over the region. Variation and enhancement of TEC were observed during the storms. The positioning error and TEC were higher at CLBR than at FUTY during the March 17, 2015 storm that could be as a result of latitudinal variation. The result will be useful for satellite based navigational systems. | ||
| کلیدواژه‌ها | ||
| Total Electron Content؛ Global Navigation Satellites System؛ Equatorial Ionosphere؛ Geomagnetic Storm؛ Positioning Accuracy | ||
| مراجع | ||
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Adebiyi, S. J., Adeniyi, J. O., Adimula, I. A., Joshua, B. and Gwani, M., 2012, Effect of the Geomagnetic Storm of April 5th– 7th, 2010, on the Layer of the Ionosphere of Ilorin, Nigeria. World Journal of Engineering and Pure and Applied Sciences, 2(2), 56-62. Adekoya, B. J., Chukwuma, V. U., Bakare, N.O. and David, T. W., 2012, Effects of Geomagnetic Storm on middle Latitude Ionosphere F2 during Storm of April 2nd – 6th, 2004. Indian Journal of Radio and Space Physics, 41, 606-616. Adewale, A. O., Oyeyemi, E. O., Adeloye, A. B. and Adedokun, M. B., 2013, Ionospheric Effects at Hobart and comparison with IRI model Predictions. Journal of Scientific Research and Development, 14, 98 – 105. Afraimovich, E. L., Demyanov, V. V. and Kondakova, T. N., 2002, Degradation of GPS performance in geomagnetically disturbed conditions. E-print archive: http://xxx.lanl.gov/abs/physics/0211015. Amit, J., Sunita, T., Sudhir, J. and Gwal, A. K., 2010, TEC response during severe geomagnetic storms near the crest of equatorial ionization anomaly. Indian Journal of Radio and Space Physics, 39, 11-24. Bolaji, O. S., Adeniyi J. O., Radicella S. M. and Doherty P. H., 2011, Variation of TEC over an Equatorial West African Station during low solar activity Radio Sci., 47, RS 1001, doi: 10.1029/2011RS004812. Buonsanto, M. J., 1999, Ionospheric Storms. Space Science Reviews, 88, 563 - 601 Earth-prints. Internet repository of scientific papers. Available at: http://www.earth-prints.org. Comberiate, J., Kelly, M., Dyrud, L. and Weaver G., 2012, Space Weather Effects on GPS Systems. Conference Proceeding at Applied Physics Laboratory, USA. D’ujanga, F. M., Baki, P., Olwendo, J. O. and Twinamasiko, B. F., 2013, Total electron content of the ionosphere at two Stations in East Africa during the 24 – 25 October 2011 geomagnetic storm, Advances in Space Research, 51(5), 712 – 721. European Space Agency (ESA), Navipedia. Available at: https://gssc. esa. int/ navipedia/index.php/Ionospheric_Delay. Jakowski, N., Beniguel, Y., De Franceschi, G., Pajares, M., Jacobson, K., Stanislawska, I., Tomasik, L. and Waenant, R., Wautelet, G., 2012, Monitoring, tracking and forecasting Ionosphere perturbations Using GNSS techniques. Journal of Space Weather Space Climate, 2, doi: 10.1051/swsc 2012022 EDP sciences. Klobuchar, J. A., 1997, Real-Time Ionospheric Science: The New Reality. Radio Science, 32(5), 1943 – 1952. Kutiev, I., Tsagouri, I., Perrone, L., Pancheva, D., Mukharov, P., Mikhailov, A., Lastovicka, J., Jakowski, N., Buresova, D., Blanch, E., Andonov, B., Altadill, D., Magdaleno, S., Parisi, M., Tortaj, J.M., 2013, Solar activity on the Earth’s upper atmosphere. Journal of Space weather Space Climate, 3(A06), Doi: 10.1051/swsc/2013028. Li, J., Ma, G., Maruyama, T. and Li, Z., 2012, Mid-Latitude Ionospheric Irregularities persisting into late morning during the magnetic storm on 19 March 2001. Journal of Geophysical Research, doi: 10.1029/2012JA017626. Moreno, B., Radicella, S., de Lacy, M. C., Herraiz, M. and Rodriguez-Caderot, G., 2011, On the effects of the Ionospheric disturbances on Precise Point Positioning at Equatorial latitudes. GPS Solutions, 15(4), 381 – 390. Monti, Ch., Sanjay, K., Barin Kumar, De. and Anirban, G., 2015, Effects of geomagnetic storm on low latitude ionospheric total electron content: A case study from Indian sector. Journal of Earth System Science, DOI: 10.1007/s12040-015-0588-3. Olawepo, A. O., Oladipo, O. A., Adeniyi, O.A. and Doherty, P. H., 2015, TEC Response at two equatorial Stations in the African Sector to Geomagnetic Storms. Journal of Advances in Space` Research, 56(1), 19 –27, doi: 10.1016/j.asr.2015. Stankov, S. M., Stegen, K. and Warnant, R., 2010, Seasonal variation of Storm time TEC at European middle latitudes. Advances in Space Research, 46, 1318-1325. Zhang, S., Zhang, Y. and Huang, C., 2015, Profiles of Ionospheric storm enhanced density during the 17 March, 2015 great storm. Journal of Geophysical Research, 121, 727 – 744, DOI: 10.1002/2015JAO21832. | ||
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