Longitude Effect in Temperate Zone Sporadic E and the Earth's Magnetic Field

Article metrics

Abstract

A RECENT study1 of the occurrence of sporadic E has shown that the percentage of the time ƒ0 E s > 5 Mc./s. exhibits a marked longitude effect, having a maximum ( 30 per cent) over south-east Asia and minima over South Africa ( 3 per cent) and the north-east part of the United States ( 6 per cent). That the effect is real, and not due to differences of equipment sensitivity, has been confirmed by very high-frequency forward scatter experiments over the Caribbean and the Philippines2. The suggestion was put forward that this longitude effect may depend in a complex manner on both geographical and magnetic latitudes or may be due to meteorological effects2.

Access 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

    Smith, jun., E. K., “AGARDograph 34 Sporadic E Ionization”, 1 (NATO Advisory Group for Aeronautical Research and Development, 1958).

  2. 2

    Smith, jun., E. K., and Finney, J. W., J. Geophys. Res., 65, 885 (1960).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

HEISLER, L., WHITEHEAD, J. Longitude Effect in Temperate Zone Sporadic E and the Earth's Magnetic Field. Nature 187, 676–677 (1960) doi:10.1038/187676a0

Download citation

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.