Volume 7, Issue 2, June 2019, Page: 15-20
Analytical Study of Storm Effect on Nighttime Enhancement at Low Latitude Station Jicamarca
Anita Agrawal, Space Science Lab, Barkatullah University, Bhopal, India
Kalpana Maski, Department of Education in Science & Mathematics, Regional Institute of Education, NCERT, Bhopal, India
Surendra Kumar Vijay, Department of Physics, Institute of Excellence in Higher Education, Bhopal, India
Satyadeo Mishra, Department of Physics, Veer Sawarkar Government College, Obedullhaganj, Raisen, India
Received: May 19, 2019;       Accepted: Jun. 20, 2019;       Published: Jul. 4, 2019
DOI: 10.11648/j.ajma.20190702.11      View  23      Downloads  15
Abstract
This paper presents study of storm effect on nighttime enhancement at low latitude station Jicamarca. Jicamarca is an ionospheric station along the anomaly trough in the American sector. For this purpose hourly values of the critical frequency (foF2) parameter are taken at low latitude station Jicamarca (12°S, 76.9°W; dip 0.28°). In the study, 39 severe storms were selected during the period2002 to 2014 based on the Dst index. With Dst ≤ −100 nT is considered to be as severe storm. We have analyzed all the characteristics of nighttime enhancement at Jicamarca such as yearly mean amplitude, time of peak and duration of enhancement. To determine the seasonal effects, we grouped all data into three seasons’ winter, summer and equinox using the four months of data for each season equinox (March, April, September and October), winter (January, February, November and December) and summer (May, June, July and August). It has been found in the study that the nighttime enhancement of foF2 is affected by stormsat Jicamarca. It can be observed from the analysis of seasonal variation of mean amplitude during major storm and disturbed nights that mean amplitude of nighttime foF2 is higher in equinox and lowest in summer. Maximum peaks are observed during 22: 00 LT during both major storms and disturbed days. The outcome presented in the study provide comprehensive image of the effect of storm on nighttime enhancement.
Keywords
Nighttime Enhancement, Dst Index, Severe Storm, Critical Frequency, Low Latitude
To cite this article
Anita Agrawal, Kalpana Maski, Surendra Kumar Vijay, Satyadeo Mishra, Analytical Study of Storm Effect on Nighttime Enhancement at Low Latitude Station Jicamarca, American Journal of Mechanics and Applications. Vol. 7, No. 2, 2019, pp. 15-20. doi: 10.11648/j.ajma.20190702.11
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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