Research Paper | Physics Science | India | Volume 5 Issue 1, January 2016
Geospheric Effects of Magnetic Clouds during 1996-2008
S Kumar  | R Verma  | S K Dubey
Abstract: The purpose of this analysis is to investigate the different characteristics of Magnetic Clouds ( MCs) which have occurred during Solar cycle 23 and in the ascending phase of Solar cycle 24 and to study their effect on geomagnetosphere so as to have better understanding of the association of GMSs with MCs. Ninety eight MCs are observed and examine during the period of 1996 to 2008. The dependence of geomagnetic activity on solar features and interplanetary (IP) parameters is investigated. Ninety eight weak ( -30 nT > Dst -50 nT), moderate ( -50 nT > Dst -100 nT), intense with (-200 nT Dst < -100 nT) and superintense ( Dst < -200 nT) geomagnetic stroms ( GMSs) have been studied from 1996 to 2008. The collected sample events are divided into two groups based on their association with MCs related to geomagnetic storms Dst -50 nT eg.1. geoeffective events and 2. For nongeoeffective events Dst -50nT. The number of GMSs show three distinct peaks during the 11- year period of 23rd solar cycle. Solar and IP parameters, e. g. , Vsw, Bz and their products, e. g. , Vsw. Bz are observed and correlated to predict the occurrence of GMSs. The correlation coefficient, r = -0.60, 0.15 and 0.21 of parameters Vsw, Bz and Vsw. Bz respectively, with Dst. The correlation coefficient for intense and superintense GMSs, r = -0.64, 0.30 and 0.31 of parameters Vsw, Bz and Vsw. Bz respectively, with Dst.
Keywords: Magnetic Cloud, Solar Wind, Geomagnetic Storms
Edition: Volume 5 Issue 1, January 2016,
Pages: 1434 - 1437
Similar Articles with Keyword 'Solar Wind'
Research Paper, Physics Science, India, Volume 3 Issue 8, August 2014Pages: 1297 - 1300
Stability of the Ion-Acoustic Wave in Permeating Plasmas: Application to Comets
Sreekala G.  | Sijo Sebastian  | Noble P. Abraham  | Manesh Michael  | Neethu Theresa Willington | G. Renuka  | Chandu Venugopal 
Case Studies, Physics Science, India, Volume 4 Issue 3, March 2015Pages: 2480 - 2484
Effect of CME Events of Geomagnetic Field at Indian Station Alibag and Pondicherry