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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 29, issue 10
Ann. Geophys., 29, 1955–1965, 2011
https://doi.org/10.5194/angeo-29-1955-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 29, 1955–1965, 2011
https://doi.org/10.5194/angeo-29-1955-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

  31 Oct 2011

31 Oct 2011

Response of the equatorial ionosphere to the total solar eclipse of 22 July 2009 and annular eclipse of 15 January 2010 as observed from a network of stations situated in the Indian longitude sector

A. Paul1,2, T. Das2, S. Ray1,2, A. Das2, D. Bhowmick2, and A. DasGupta2 A. Paul et al.
  • 1Institute of Radio Physics and Electronics, University of Calcutta, Calcutta, India
  • 2S. K. Mitra Center for Research in Space Environment, University of Calcutta, Calcutta, India

Abstract. Dual-frequency GPS TEC monitors have been used to study the response of the ionosphere to the solar eclipses of 22 July 2009 and 15 January 2010. The receivers were located at three stations, Calcutta, Kharagpur and Baharampore which are situated outside the umbra zone in the Indian longitude sector with each baseline being ~200 km. Effects of obscuration of the solar disc were noted in the ambient TEC recorded at the three stations. A series of depletions in TEC along the track of a GPS satellite and associated wave-like structures were identified on some GPS links during both the eclipses.

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