Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap
We report on the characteristics of the diurnally varying electron flux observed near the polar cap. The discussion is based on balloon observations, made near Fort Churchill, Manitoba, in 1967, of both the electron flux vertically incident on the atmosphere and the electron splash albedo. We measur...
Published in: | Journal of Geophysical Research |
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Language: | English |
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American Geophysical Union
1969
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Online Access: | https://authors.library.caltech.edu/44633/ https://authors.library.caltech.edu/44633/1/jgr7697.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140403-102131366 |
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ftcaltechauth:oai:authors.library.caltech.edu:44633 2023-05-15T15:55:05+02:00 Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap Israel, Martin H. Vogt, Rochus E. 1969-09-01 application/pdf https://authors.library.caltech.edu/44633/ https://authors.library.caltech.edu/44633/1/jgr7697.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140403-102131366 en eng American Geophysical Union https://authors.library.caltech.edu/44633/1/jgr7697.pdf Israel, Martin H. and Vogt, Rochus E. (1969) Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap. Journal of Geophysical Research A, 74 (19). pp. 4714-4720. ISSN 0148-0227. doi:10.1029/JA074i019p04714. https://resolver.caltech.edu/CaltechAUTHORS:20140403-102131366 <https://resolver.caltech.edu/CaltechAUTHORS:20140403-102131366> other Article PeerReviewed 1969 ftcaltechauth https://doi.org/10.1029/JA074i019p04714 2021-11-11T18:57:16Z We report on the characteristics of the diurnally varying electron flux observed near the polar cap. The discussion is based on balloon observations, made near Fort Churchill, Manitoba, in 1967, of both the electron flux vertically incident on the atmosphere and the electron splash albedo. We measured an electron splash albedo flux below 100 Mev equal to the flux of electrons below 100 Mev incident on the atmosphere during daytime. The observed diurnal variations of the flux of electrons with energies ≲100 Mev is consistent with geomagnetic cutoff variations calculated for models of the magnetosphere. We deduce a geomagnetic ctuoff rigidity of ≲17 Mv for the nighttime interval and between 70 and 110 Mv for the daytime interval at an invariant latitude near 68° in 1967. Article in Journal/Newspaper Churchill Caltech Authors (California Institute of Technology) Fort Churchill ENVELOPE(-94.079,-94.079,58.756,58.756) Journal of Geophysical Research 74 19 4714 4720 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
English |
description |
We report on the characteristics of the diurnally varying electron flux observed near the polar cap. The discussion is based on balloon observations, made near Fort Churchill, Manitoba, in 1967, of both the electron flux vertically incident on the atmosphere and the electron splash albedo. We measured an electron splash albedo flux below 100 Mev equal to the flux of electrons below 100 Mev incident on the atmosphere during daytime. The observed diurnal variations of the flux of electrons with energies ≲100 Mev is consistent with geomagnetic cutoff variations calculated for models of the magnetosphere. We deduce a geomagnetic ctuoff rigidity of ≲17 Mv for the nighttime interval and between 70 and 110 Mv for the daytime interval at an invariant latitude near 68° in 1967. |
format |
Article in Journal/Newspaper |
author |
Israel, Martin H. Vogt, Rochus E. |
spellingShingle |
Israel, Martin H. Vogt, Rochus E. Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap |
author_facet |
Israel, Martin H. Vogt, Rochus E. |
author_sort |
Israel, Martin H. |
title |
Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap |
title_short |
Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap |
title_full |
Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap |
title_fullStr |
Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap |
title_full_unstemmed |
Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap |
title_sort |
characteristics of the diurnally varying electron flux near the polar cap |
publisher |
American Geophysical Union |
publishDate |
1969 |
url |
https://authors.library.caltech.edu/44633/ https://authors.library.caltech.edu/44633/1/jgr7697.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140403-102131366 |
long_lat |
ENVELOPE(-94.079,-94.079,58.756,58.756) |
geographic |
Fort Churchill |
geographic_facet |
Fort Churchill |
genre |
Churchill |
genre_facet |
Churchill |
op_relation |
https://authors.library.caltech.edu/44633/1/jgr7697.pdf Israel, Martin H. and Vogt, Rochus E. (1969) Characteristics of the Diurnally Varying Electron Flux Near the Polar Cap. Journal of Geophysical Research A, 74 (19). pp. 4714-4720. ISSN 0148-0227. doi:10.1029/JA074i019p04714. https://resolver.caltech.edu/CaltechAUTHORS:20140403-102131366 <https://resolver.caltech.edu/CaltechAUTHORS:20140403-102131366> |
op_rights |
other |
op_doi |
https://doi.org/10.1029/JA074i019p04714 |
container_title |
Journal of Geophysical Research |
container_volume |
74 |
container_issue |
19 |
container_start_page |
4714 |
op_container_end_page |
4720 |
_version_ |
1766390430856904704 |