- Letter
- Open Access
- Published:
Day-to-day variability of the equatorial electrojet current in the South American sector
Earth, Planets and Space volume 59, pages 459–461 (2007)
Abstract
A comparison of the geomagnetic H field data at Ancon, Peru and Buriticupa, Brazil for the period December 1990 and January 1991 revealed the presence of a significant correlation in day-to-day variability in the solar daily variation of H at the two stations, which are separated by about 2000 km. It is suggested that the day-to-day variability in the time as well as in the magnitude of the daily peak of the H field at an equatorial electrojet station is due to the superimposition of a semi-diurnal wave of the electric field over the normal mean daily variation.
References
Alex, S., A. R. Patil, and R. G. Rastogi, Equatorial counter electrojet solution of some dilemma, Ind. J. Radio. Space. Phys., 15, 114–118, 1986.
Baker, W. G. and D. F. Martyn, Electric currents in the ionosphere. The conductivity, Phil. Trans. R. Soc. Lond., A246, 281–294, 1953.
Bhargava, B. N. and N. S. Sastri, A comparison of days with and without occurrence of counter electrojet afternoon events in the Indian region, Ann. Geophys., 33, 329–333, 1977.
Chandra, H., H. S. S. Sinha, and R. G. Rastogi, Equatorial electrojet studies from rocket and ground measurements, Earth Planet Space, 52, 111–120, 2000.
Greener, J. G. and D. M. Schlapp, A study of day to day variability of Sq over Europe, J. Atmos. Terr. Phys., 41, 217–223, 1979.
James, M. E. and R. G. Rastogi, Critical study of the solar daily range of geomagnetic H field as Indo-Russian chain of stations, J. Ind. Geophys. Union, 4(4), 182–194, 2002.
Rastogi, R. G. and H. Chandra, Interplanetary magnetic field and the equatorial ionosphere, J. Atmos. Terr. Phys., 36, 377–379, 1974.
Rastogi, R. G., Geomagnetic field variations at low latitudes and ionospheric electric fields, J. Atmos. Terr. Phys., 55, 1375–1381, 1993.
Rigoti, A., Geomagnetic array study of the EEJ in N-NE Brazil. Ph.D. Thesis, School of Earth Sciences, Flinders University of South Australia, 1994.
Rigoti, A., F. H. Chamaluan, N. B. Trivedi, and A. L. Padilha, Characteristics of the equatorial electrojet determined from an array of magnetometers in N-NE Brazil, Earth Planet. Space, 51, 115–128, 1999.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Open Access  This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/.
About this article
Cite this article
Rastogi, R.G. Day-to-day variability of the equatorial electrojet current in the South American sector. Earth Planet Sp 59, 459–461 (2007). https://doi.org/10.1186/BF03352707
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1186/BF03352707
Key words
- Equatorial electrojet
- day-to-day variability
- equatorial electric field