Evidence of the influence of the interplanetary magnetic field azimuthal component on polar cusp configuration

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Journal of Geophysical Research; (USA)

DOI:https://doi.org/10.1029/JA094iA10p13585· OSTI ID:5915102

Candidi, M; Mastrantonio, G; Orsini, S ^[1]; Meng, C I ^[2]

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1. Istituto di Fisica dello Spazio Interplanetario, Rome (Italy)
2. John's Hopkins Univ., Laurel, MD (USA)

A study is presented of the low-altitude polar cusp regions using the precipitating electron data from DMSP F2 and F4 satellites during 54 quasi-simultaneous traversals of the polar cusp region in the same hemisphere. Electron precipitation features are used to determine the cusp morphology and behavior at different magnetic local times for varying orientations of the interplanetary magnetic field (IMF). Indication is found of a systematic shift of the equatorward boundary of the morning cusp region toward the pole (or the equator) in the southern hemisphere for positive (or negative) IMF B{sub y} with respect to its position at noon as detected nearly simultaneously by the other satellite.

• OSTI ID: 5915102
• Journal Information: Journal of Geophysical Research; (USA), Journal Name: Journal of Geophysical Research; (USA) Vol. 94:A10; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGED-PARTICLE PRECIPITATION
DYNAMICS
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
EARTH PLANET
ELECTRON PRECIPITATION
INTERPLANETARY MAGNETIC FIELDS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
MAPPING
MECHANICS
MORPHOLOGY
ORIGIN
PLANETS
PLASMA DENSITY
PLASMA DRIFT
POLAR CUSP
SATELLITES
SOUTHERN HEMISPHERE