Characterization of low latitude GPS-TEC during very low solar activity phase |
| |
| Authors: | Praveen Galav N Dashora S Sharma R Pandey |
| |
| Institution: | 1. Department of Physics, M. L. S. University, Udaipur 313 001, India;2. National Atmospheric Research Laboratory, Gadanki 517 112, India;1. German Research Centre for Geosciences GFZ, Telegrafenberg, D-14473 Potsdam, Germany;2. Institut für Geodäsie und Geoinformationstechnik, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany;3. Department of Physics, University of Lagos, Akoka, Yaba, Lagos, Nigeria;4. Faculty of Geodesy and Geomatics Engineering, K.N. Toosi University of Technology, Tehran, Iran;1. Discipline of Astronomy, Astrophysics and Space Engineering, IIT Indore, Simrol, Indore 453552, Madhya Pradesh, India;2. Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Science, University of Colorado, Boulder, CO 80309, USA;3. Institute of Radio Physics and Electronics, University of Calcutta, Kolkata 700 009, West Bengal, India;1. Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital 263129, India;2. School of EEE, Nanyang Technological University, Singapore 639798, Singapore;3. Atmospheric Research Lab., Department of Physics, Banaras Hindu University, Varanasi 221005, India;4. Dept. of Aerospace Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea |
| |
| Abstract: | We present the mean diurnal, seasonal and annual variations in TEC during the lowest solar activity phase from low latitude Indian zone recorded at Udaipur (Geog. Lat. 24.6°N, Geog. Long.73.7°E, Geomag. Lat. 15.6°N) using a GPS receiver. Seasonal variations in daytime TEC show a semiannual periodicity, with a minimum in winter. Results of seasonal variations have been compared with that of the IRI-2007 model. Model calculations reveal significant seasonal as well as longitudinal differences in TEC. Seasonal variations in the nighttime TEC reveal an annual periodicity. Near the crest of the EIA, TEC shows a very good correlation with the solar flux. The results also point to weakening of the anomaly crest as well as its spatial and temporal contraction with declining solar activity. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
