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One year variations in the near earth solar wind ion density and bulk flow velocityOne-year periodic variations in the near earth solar wind ion density and bulk flow velocity are reported. The variations show an inverse relationship between the ion velocity and density. The peak strength of the observed density variation ranges from 50-100 percent over the background. These variations imply either large scale mass loading inside the earth's orbit or intrinsic solar modulations. Analyses of both near earth and Pioneer Venus Orbiter spacecraft data provide a comparison at two different heliocentric distances. Several explanations for these variations are discussed.
Document ID
19900034449
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bolton, Scott J.
(JPL, Pasadena; California, University Berkeley, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Geophysical Research Letters
Volume: 17
ISSN: 0094-8276
Subject Category
Solar Physics
Accession Number
90A21504
Funding Number(s)
CONTRACT_GRANT: NAGW-776
Distribution Limits
Public
Copyright
Other

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