NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Solar EUV index for aeronomical studies at earth from Langmuir probe photoelectron measurements on the Pioneer Venus orbiterA solar EUV index for aeronomical studies at earth, obtained from the Langmuir probe measurement of photoelectron current on the Pioneer Venus orbiter, is presented. To examine the potential of E sub EUV as a solar EUV flux index, the behavior of ionospheric parameters f sub 0 E, f sub 0 F1, and f sub 0 F2 are studied at midlatitude stations, and their relationship with E sub EUV and with the 10.7-cm solar radio flux is compared. f sub 0 F1 and f sub 0 F2 are found to be better correlated with E sub EUV than with the 10.7-cm flux. F sub 0 E is better correlated with the 10.7-cm flux, because the 10.7-cm flux is also a proxy for soft X-rays, which are an important ionizing source in the E region. A table is also presented for the EUV index, E sub EUV, for the period February 12, 1979, through most of 1991.
Document ID
19920064833
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hoegy, W. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mahajan, K. K.
(National Physical Laboratory New Delhi, India)
Date Acquired
August 15, 2013
Publication Date
July 1, 1992
Publication Information
Publication: Journal of Geophysical Research
Volume: 97
Issue: A7, J
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
92A47457
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available