Cosmic noise absorption and ionospheric currents at the South Pole and Frobisher Bay: Initial results

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Antarctic Journal of the United States; (United States)

OSTI ID:5370647

Rosenberg, T J ^[1]; Wolfe, A ^[2]; Lanzerotti, L J ^[3]

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1. Univ. of Maryland, College Park (USA)
2. City Univ. of New York, Brooklyn (USA) AT T Bell Laboratories, Murray Hill, NJ (USA)
3. AT T Bell Laboratories, Murray Hill, NJ (USA)

Studies of the conjugacy of auroral and ionospheric phenomena at very high latitudes are an important aspect of magnetospheric physics research. The extent to which auroral phenomena in opposite hemispheres are similar in occurrence and in the details of their temporal, spatial, and spectral characteristics can be used to infer the commonality of the source(s) of the disturbances. At one extreme in this consideration is the questions of whether sources lie on open or closed magnetic field lines. The University of Maryland and AT T Bell Laboratories have operated riometers and fluxgate magnetometers, respectively, at South Pole since 1982. Corresponding measurements at Frobisher Bay were begun in mid-1985. Riometers record the absorption of cosmic radio noise in the ionosphere produced by the enhances precipitation of energetic charged particles. The studies of the riometer data relate mainly to the effects of the influx of magnetospheric electrons, which give rise to auroral absorption of the cosmic signals. Intense currents (electrojets) that often flow in the ionosphere in association with auroral absorption events produce magnetic field changes that can be recorded on the ground by appropriately sited magnetometers. This report presents some initial results of the comparison of the two data sets.

• OSTI ID: 5370647
• Journal Information: Antarctic Journal of the United States; (United States), Journal Name: Antarctic Journal of the United States; (United States) Vol. 22:5; ISSN 0003-5335; ISSN AJUSA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ANTARCTIC REGIONS
ANTARCTICA
AURORAE
CHARGED-PARTICLE PRECIPITATION
COMPARATIVE EVALUATIONS
CURRENTS
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
ELECTRIC CURRENTS
ELECTROJETS
ELECTRONS
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
GEOMAGNETIC FIELD
IONOSPHERE
LEPTONS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
MAGNETIC STORMS
ORIGIN
PLANETARY IONOSPHERES
POLAR REGIONS