Letter | Published:

Joule dissipation in F-region and equatorial spread-F events

Nature volume 272, page 516 (06 April 1978) | Download Citation

Subjects

Abstract

The dissipation of turbulent electric fields varying with time, which are associated with spread-F in equatorial regions, has been thought to cause significant heating of the neutral atmospheric gases at F-region altitudes and higher1. The time-varying electric fields have been shown to exist during spread-F at Jicamarca2, and the two phenomena are known to occur with high probability in a latitudinal belt about 30° wide centred on the magnetic equator3. The theory of formation of large-scale field-aligned irregularities1 from which small-scale irregularities, as in spread-F, may develop5 suggests that if spread-F occurs, it will happen all along the magnetic tube of force4. This inference is consistent with the observations3 of ‘turbulent’ electrostatic fields from satellite OVI-17. We describe here recent experimental measurements of neutral atmosphere temperatures at F-region heights at Mt Abu (24.6°N, 72.7°E geographic; 15.0° geomagnetic latitude) which agree with the theoretical prediction of very great atmospheric heating in equatorial spread-F events1.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1.

    J. atmos. terr. Phys. 36, 1099–1102 (1974).

  2. 2.

    & J. geophys. Res. 77, 5617–5621 (1972).

  3. 3.

    J. geophys. Res. 77, 1327–1329 (1972).

  4. 4.

    J. atmos. Terr. Phys. 33, 741–750 (1971).

  5. 5.

    , & J. geophys. Res. 77, 5625–5628 (1972).

  6. 6.

    & Ind. J. Radio Space Phys. 5, 58–60 (1976).

  7. 7.

    Space Res. Spec. Rep. 332 (1971).

Download references

Author information

Affiliations

  1. Physical Research Laboratory, Ahmedabad-380009, India

    • T. N. RAJARAMAN
    • , J. N. DESAI
    •  & S. S. DEGAONKAR
  2. La Trobe University, Bundoora, Victoria, Australia

    • K. D. COLE

Authors

  1. Search for T. N. RAJARAMAN in:

  2. Search for J. N. DESAI in:

  3. Search for S. S. DEGAONKAR in:

  4. Search for K. D. COLE in:

About this article

Publication history

Received

Accepted

Published

DOI

https://doi.org/10.1038/272516a0

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.