Solar flares and D-region ionization sources at high zenith angles

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dc.contributor.authorGough M.P.
dc.date.accessioned2024-03-13T01:48:07Z
dc.date.available2024-03-13T01:48:07Z
dc.date.issued1974
dc.description.abstractVLF phase measurements were made at three locations along the same great circle path of propagation during a solar flare which occurred on 29 June 1973. The termination for the solar flare effect on the ionosphere at VLF reflecting heights occurred between solar zenith angles 84° and 87°, considerably less than the sunset zenith angle of 94° for this height. Ionization production is considered for the various ionization sources as a function of zenith angle. The measurement is consistent with the electron density at VLF reflecting heights being primarily controlled by solar photo-detachment but at zenith angles greater than 76° the ionization available for photo-detachment is produced by scattered Lyman-α as the direct Lyman-α becomes too heavily absorbed. © 1974.
dc.description.firstpage1695
dc.description.issuenumber10
dc.description.lastpage1699
dc.description.volume36
dc.identifier.doi10.1016/0021-9169(74)90207-4
dc.identifier.issn0021-9169
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/38100
dc.relation.ispartofJournal of Atmospheric and Terrestrial Physics
dc.rightsAcesso Restrito
dc.titleSolar flares and D-region ionization sources at high zenith angles
dc.typeArtigo
local.scopus.citations2
local.scopus.eid2-s2.0-49549152335
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=49549152335&origin=inward
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