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CommentAn examination of ion concentration data from the AE-E, AE-C, and DE-2 spacecraft did not detect the small-comet influx into the upper atmosphere predicted by Frank et al. (1986). It is suggested that either the proposed cometary flux is overestimated by over an order of magnitude, or that the ionospheric signature used is not presently defined properly. In a reply, Frank et al. describe a more direct method for identifying the mechanisms participating in the interaction of the cometary water cloud with the ionosphere: examining DE-1 spacecraft images of the earth's UV afterglow for a crossing of a transient decrease, or atmospheric hole, with the DE-2 spacecraft, and verifying if the ionospheric signature identified with this crossing is noted at other times in the quiet atmosphere. A possible signature of the passage of the cometary water cloud through the ionosphere is identified, and a mode for this interaction is indicated.
Document ID
19870030594
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hanson, W. B.
(Texas, University Richardson, United States)
Date Acquired
August 13, 2013
Publication Date
September 1, 1986
Publication Information
Publication: Geophysical Research Letters
Volume: 13
ISSN: 0094-8276
Subject Category
Lunar And Planetary Exploration
Accession Number
87A17868
Funding Number(s)
CONTRACT_GRANT: NGR-44-004-120
CONTRACT_GRANT: N00014-85-K-0404
CONTRACT_GRANT: NAG5-305
CONTRACT_GRANT: NGL-16-001-002
CONTRACT_GRANT: NAG5-483
CONTRACT_GRANT: NAG5-306
Distribution Limits
Public
Copyright
Other

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