Abstract
ON November 27, 1959, a rare signal was heard on the chorus-whistler equipment1 at College, Alaska. Beginning as a whistle of perhaps 2 kc./s. at approximately 1351 A.S.T. (2351 G.M.T.) on November 27, 1959, a tone rose slowly to about 10 kc./s., becoming a hiss lasting for what seemed to be several minutes. At the same time magnetic field micropulsations2 with periods of 10–20 sec. were initiated with a commencement magnitude of about 2.5γ falling to 0.4γ in about 5 min.
Similar content being viewed by others
Article PDF
References
Pope, J. H., “An Investigation of Whistlers and Chorus at High Latitudes”, Sci. Rep. No. 4, AF 19(604)-1859, Geophys. Inst., Univ. of Alaska (1959).
Campbell, W. H., J. Geophys. Res., 64, 1819 (1959).
Hessler, V. P., and Wescott, E. M., “Rapid Fluctuations in Earth Currents at College”, Sci. Rep. No. 1, AF 19(604)-3075, Univ. of Alaska (Jan. 1959).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
WESCOTT, E., POPE, J., DYER, D. et al. Rare Hiss, Earth Currents and Micropulsations on November 27, 1959. Nature 185, 231 (1960). https://doi.org/10.1038/185231a0
Issue Date:
DOI: https://doi.org/10.1038/185231a0
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.