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Access of solar protons into the polar cap: A persistent north-south asymmetry

Evans, L. C. and Stone, E. C. (1969) Access of solar protons into the polar cap: A persistent north-south asymmetry. Journal of Geophysical Research A, 74 (21). pp. 5127-5131. ISSN 0148-0227. doi:10.1029/JA074i021p05127.

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Before the magnetic storm sudden commencement during the November 2, 1967, solar particle event, the access of 1.2- to 40-Mev protons into the high-latitude portion of the northern polar region was delayed by ∼20 hours. At the same time the access delay for 10- to 40-Mev protons was ≲1 hour in the southern polar region and at middle northern latitudes. The implications of the north-south asymmetry are discussed.

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Stone, E. C.0000-0002-2010-5462
Additional Information:© 1969 American Geophysical Union. Received July 7, 1969. We gratefully acknowledge the collaboration and support of Drs. J. A. Simpson and C. Y. Fan during various stages of this joint University of Chicago/California Institute of Technology program. The instrument was constructed by the Laboratory for Astrophysics and Space Research of the University of Chicago. We also thank Dr. L. Davis, Jr., for helpful discussions. This work was supported by the National Aeronautics and Space Administration under contract NAS 5-3095 and grant NGL 05-002-007. Space Radiation Laboratory SRL ID #: 1969-06
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANAS 5-3095
NASANGL 05-002-007
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1969-06
Issue or Number:21
Record Number:CaltechAUTHORS:20140407-084852501
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Official Citation:Evans, L. C., and E. C. Stone (1969), Access of solar protons into the polar cap: A persistent north-south asymmetry, J. Geophys. Res., 74(21), 5127–5131, doi:10.1029/JA074i021p05127
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44677
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Deposited On:07 Apr 2014 16:31
Last Modified:10 Nov 2021 16:55

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