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Relating OGO-5 H(+) Plasmapause Transitions to Mid-Latitude Topside-Ionospheric SignaturesPlasmapause transitions, as seen in the H + and He+ density gradients measured by the Orbiting Geophysical Observatory 5 (OGO 5) ion spectrometer [Sharp, IEE Trans. in Geosci. Elect., 1969], have been investigated in an attempt to relate them to their topside ionospheric signatures as seen in the Alouette-1 & 2 and ISIS-1 data. The satellite data were obtained from the National Space Science Data Center (NSSDC). A search of the OGO-5 data revealed 54 sharp plasmapause crossings as evaluated from the H+ density. The ionospheric footprints (at 1400 km altitude) of the magnetic-field lines through the locations of these plasmapause crossings were then used to search for topside ionospheric electron-density profiles from the NSSDC. No profiles corresponding to these projections were identified. A similar search of the topside-sounder 35-mm ionogram-film database, however, identified 17 cases of candidate "conjunctions" involving Alouette l & 2 and ISIS 1. We will present samples of the plasmapause OGO-5 ion transitions and the related topside ionospheric signatures and discuss the observations in relation to the recent similar study based on Explorer-45 and ISIS-2 data [Grebowsky et al., JASTP, 2009].
Document ID
20090038131
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Truhlik, Vladimir
(Academy of Sciences of the Czech Republic Prague, Czech Republic)
Benson, Robert F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bilitza, Dieter
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Grebowsky, Joseph M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wang, Yongli
(Maryland Univ. Baltimore County Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
December 13, 2009
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: American Geophysical Union 12228-10ST 2009 Fall AGU Conference
Location: San Francisco, CA
Country: United States
Start Date: December 13, 2009
End Date: December 19, 2009
Distribution Limits
Public
Copyright
Other

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