NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Geomagnetic field-line resonant harmonics measured by the Viking and AMPTE/CCE magnetic field experimentsThe first simultaneous observations of multiple harmonic, azimuthally polarized, ULF pulsations at two points along a geomagnetic flux tube in space are reported. In March 1986, the elliptically orbiting equatorial AMPTE/CCE satellite was oriented with the apogee near 0830 h MLT, and the orbital plane of the polar-orbiting Viking satellite was at 1000 MLT. The satellites were situated within approximately the same flux tube but with an effective separation of approximately 10 R(e) near L = 8 on the inbound pass of the AMPTE/CCE orbit. Structured harmonic pulsations were observed by the magnetic field experiments on both spacecraft, and they appeared to turn off and on simultaneously at both locations. Both the observations and the relative amplitudes along the magnetic field lines support recent ideas of multiple field-line resonances of Alfven waves.
Document ID
19870052599
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Zanetti, L. J.
(Johns Hopkins Univ. Laurel, MD, United States)
Potemra, T. A.
(Johns Hopkins Univ. Laurel, MD, United States)
Erlandson, R. E.
(Johns Hopkins University Laurel, MD, United States)
Engebretson, M. J.
(Augsburg College Minneapolis, MN, United States)
Acuna, M. H.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
April 1, 1987
Publication Information
Publication: Geophysical Research Letters
Volume: 14
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
87A39873
Distribution Limits
Public
Copyright
Other

Available Downloads

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