Ionospheric variability during quiet and disturb geomagnetic conditions for low and high solar activity year

被引:0
作者
Sanjay Kumar
机构
[1] Banaras Hindu University,Atmospheric Research Lab, Department of Physics
来源
Indian Journal of Physics | 2022年 / 96卷
关键词
Ionosphere; Geomagnetic activity; Solar activity; Post-sunset anomaly; Ionosphere-thermosphere coupling;
D O I
暂无
中图分类号
学科分类号
摘要
Present Paper describes analysis of GPS-data recorded at low latitude station Hyderabad (Geographic latitude 17∘\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$^\circ $$\end{document}, 25′ N, longitude 78∘\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$^\circ $$\end{document}, 33′ E), India to study the effect of magnetic activity on ionospheric TEC. The total electron content (TEC) data were considered for the ionosphere during five most quiet and most disturbed days for each month of the solar minimum year 2009 and the high solar activity year 2013. The results show that GPS-TEC is found to be more during disturbed days than that during quiet days with a maximum difference during the equinox season. In addition, the difference in TEC during quiet and disturbed days is found to be higher for solar maximum than that for solar minimum year. Moreover the GPS-TEC variations depend on the season with the maximum in equinox season and minimum in summer and winter season. Generally daytime TEC is found to be larger than that in the nighttime which is maximized around the local noontime hour but the peak formation delayed for the solar minimum year. The EIA development process during the solar minimum is quite slow and occurs in late afternoon as compared to that during the high solar activity year. In addition, this delay is larger for summer and winter season than that for equinox months. The formation of post sunset anomaly in the post-sunset sector (1900–2300 LT) is prominent during high solar activity year 2013 whereas same is insignificant for solar minimum year 2009. The post-sunset anomaly could be attributed to pre-reversal enhancement (PRE) of zonal electric field.
引用
收藏
页码:1635 / 1641
页数:6
相关论文
共 50 条
[41]   Solar activity and human health at middle and low geomagnetic latitudes in Central America [J].
Mendoza, Blanca ;
Sanchez de la Pena, Salvador .
ADVANCES IN SPACE RESEARCH, 2010, 46 (04) :449-459
[42]   Impact of atmospheric circulation on climate changes under quiet conditions and during geomagnetic disturbances [J].
Karakhanyan, A. A. ;
Molodykh, S., I .
27TH INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS, ATMOSPHERIC PHYSICS, 2021, 11916
[43]   Ionospheric peak height behavior for low, middle and high latitudes: A potential empirical model for quiet conditions-Comparison with the IRI-2007 model [J].
Magdaleno, S. ;
Altadill, D. ;
Herraiz, M. ;
Blanch, E. ;
de la Morena, B. .
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2011, 73 (13) :1810-1817
[44]   Topside Ionospheric Conditions During the 7-8 September 2017 Geomagnetic Storm [J].
Jimoh, Oluwaseyi ;
Lei, Jiuhou ;
Zhong, Jiahao ;
Owolabi, Charles ;
Luan, Xiaoli ;
Dou, Xiankang .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2019, 124 (11) :9381-9404
[45]   GPS TEC variations under quiet and disturbed geomagnetic conditions during the descending phase of 24th solar cycle over the Indian equatorial and low latitude regions [J].
Lissa, D. ;
Venkatesh, K. ;
Prasad, D. S. V. V. D. ;
Niranjan, K. ;
Seemala, Gopi K. .
ADVANCES IN SPACE RESEARCH, 2021, 68 (04) :1836-1849
[46]   Effects of solar and geomagnetic activity in long-term variations in the ionospheric parameters of the auroral zone in 1963-1986 [J].
Vovk, V. Ya ;
Egorova, L. V. .
GEOMAGNETISM AND AERONOMY, 2010, 50 (04) :461-466
[47]   A local ionospheric model for forecasting the critical frequency of the F2 layer during disturbed geomagnetic and ionospheric conditions [J].
Pietrella, M. ;
Perrone, L. .
ANNALES GEOPHYSICAE, 2008, 26 (02) :323-334
[48]   A new index of solar and geomagnetic activity for analyzing climatic changes in the ionospheric E-region [J].
Petrukhin, VF ;
Kokourov, VD ;
Ponomarev, EA ;
Sutyrin, NA .
TENTH JOINT INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS/ATMOSPHERIC PHYSICS, PT 2: LASER SENSING AND ATMOSPHERIC PHYSICS, 2004, 5397 :274-279
[49]   Response of the geomagnetic activity to solar wind turbulence during solar cycle 23 [J].
D'Amicis, R. ;
Bruno, R. ;
Bavassano, B. .
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2011, 73 (5-6) :653-657
[50]   Magnetic Field Perturbations from Currents in the Dark Polar Regions During Quiet Geomagnetic Conditions [J].
Friis-Christensen, E. ;
Finlay, C. C. ;
Hesse, M. ;
Laundal, K. M. .
SPACE SCIENCE REVIEWS, 2017, 206 (1-4) :281-297