Abstract
THE existence of ionized layers (the C-layers) in the lower and middle atmosphere (between 5 km. and 60 km. altitude) was suggested more than twenty years ago by several authors and such short-range echoes (20–50 km.) have also been reported in recent years. It seems doubtful, however, whether they were produced by ionization1. Landmark2 has recently obtained a few echoes from a height of 65 km., which seem to have been of ionospheric origin. They appeared during periods of strong solar disturbances. Intense ionization at still lower heights was observed four times during the summer of 1958 at Kiruna Geophysical Observatory, Sweden.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Berkner, L. V., “Terrestrial Magnetism and Electricity”, edit. by Fleming (McGraw-Hill). Major, G., Nature, 175, 862 (1955). Dowden, R. L., J. Atmos. Terr. Phys., 11, 111 (1957).
Landmark, B., J. Atm. Terr. Phys., 12, 79 (1958).
Little, C. G., and Leinbach, H., Proc. Inst. Rad. Eng., 46, 334 (1958).
Hultqvist, B., Aarons, J., and Ortner, J., Tellus (in the press). Hultqvist, B., ibid. (in the press).
Interim Progress Report, Electronics Research Laboratory, Stanford University, Bur. Stand. Contract No. Cst.-10751 (1951).
Götz, F. W. P., Erg. Kosm. Physik., 3, 253 (1938). Barbier, D., Chalonge, D., and Vigroux, E., Ann. Astrophys., 5, 1 (1942).
Hultqvist, B., Arkiv för Geofysik (in the press). Bailey, D. K., J. Geophys. Res., 62, 431 (1957).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
HULTQVIST, B., ORTNER, J. Observations of Intense Ionization of Long Duration below 50 km. Altitude after some Strong Solar Flares. Nature 183, 1179–1180 (1959). https://doi.org/10.1038/1831179a0
Issue Date:
DOI: https://doi.org/10.1038/1831179a0
This article is cited by
-
Satellite Observations of Solar Cosmic Rays
Nature (1959)
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.
