View Item 
      •   Home
      • 1. Schools
      • College of Engineering
      • School of Electrical and Electronic Engineering (EEE)
      • EEE Journal Articles
      • View Item
      •   Home
      • 1. Schools
      • College of Engineering
      • School of Electrical and Electronic Engineering (EEE)
      • EEE Journal Articles
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      Subject Lookup

      Browse

      All of DR-NTUCommunities & CollectionsTitlesAuthorsBy DateSubjectsThis CollectionTitlesAuthorsBy DateSubjects

      My Account

      Login

      Statistics

      Most Popular ItemsStatistics by Country/RegionMost Popular Authors

      About DR-NTU

      Effects of geomagnetic storm on low latitude ionospheric total electron content: A case study from Indian sector

      Thumbnail
      Effects of geomagnetic storm on low latitude ionospheric total electron content.pdf (4.032Mb)
      Author
      Chakraborty, Monti
      Kumar, Sanjay
      Kumar De, Barin
      Guha, Anirban
      Date of Issue
      2015
      School
      School of Electrical and Electronic Engineering
      Version
      Published version
      Abstract
      The effect of geomagnetic storms on low latitude ionosphere has been investigated with the help of Global Positioning System Total Electron Content (GPS-TEC) data. The investigation has been done with the aid of TEC data from the Indian equatorial region, Port Blair (PBR) and equatorial ionization anomaly region, Agartala (AGR). During the geomagnetic storms on 24th April and 15th July 2012, significant enhancement up to 150% and depression up to 72% in VTEC is observed in comparison to the normal day variation. The variations in VTEC observed from equatorial to EIA latitudes during the storm period have been explained with the help of electro-dynamic effects (prompt penetration electric field (PPEF) and disturbance dynamo electric field (DDEF)) as well as mechanical effects (storm-induced equatorward neutral wind effect and thermospheric composition changes). The current study points to the fact that the electro-dynamic effect of geomagnetic storms around EIA region is more effective than at the lower latitude region. Drastic difference has been observed over equatorial region (positive storm impact) and EIA region (negative storm impact) around same longitude sector, during storm period on 24th April. This drastic change as observed in GPS-TEC on 24th April has been further confirmed by using the O/N2 ratio data from GUVI (Global Ultraviolet Imager) as well as VTEC map constructed from IGS data. The results presented in the paper are important for the application of satellite-based communication and navigational system.
      Subject
      Ionospheric total electron content
      Geomagnetic storm
      Low latitude ionosphere
      Type
      Journal Article
      Series/Journal Title
      Journal of Earth System Science
      Rights
      © 2015 Indian Academy of Sciences. This paper was published in Journal of Earth System Science and is made available as an electronic reprint (preprint) with permission of Indian Academy of Sciences. The published version is available at: [http://www.ias.ac.in/describe/article/jess/124/05/1115-1126]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
      Collections
      • EEE Journal Articles

      Show full item record


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       

      DCSIMG