Control of auroral-zone dynamics and thermodynamics by the interplanetary magnetic field dawn-dusk (Y) component

Technical Report · Fri Sep 01 00:00:00 EDT 1989

OSTI ID:6850377

Sica, R J; Hernandez, G; Emery, B A; Roble, R G; Smith, R W

It is well known that ion drag momentum forcing is one of the primary drivers of the thermospheric wind at high latitudes. Previous theoretical and experimental studies have shown that the dawn-dusk component of the interplanetary magnetic field (IMF By) expands the classical symmetric two-cell convection pattern toward dusk (By negative) or toward dawn (By positive) in the northern hemisphere, altering the ion drag forcing on the neutral atmosphere. Measurements of the neutral dynamics associated with these convection patterns have been presented primarily at magnetic latitudes greater than 70 deg. in the polar cap.

• Research Organization: Washington Univ., Seattle, WA (USA)
• OSTI ID: 6850377
• Report Number(s): AD-A-222260/2/XAB; CNN: AFOSR-89-0316
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AURORAE
AURORAL ZONES
CHARGED PARTICLES
CONVECTION
DATA
DRAG
DYNAMICS
EARTH ATMOSPHERE
EARTH PLANET
ENERGY TRANSFER
EXPERIMENTAL DATA
HEAT TRANSFER
INFORMATION
INTERPLANETARY MAGNETIC FIELDS
IONS
MAGNETIC FIELDS
MASS TRANSFER
MECHANICS
NORTHERN HEMISPHERE
NUMERICAL DATA
PLANETS
THERMODYNAMICS
THERMOSPHERE
WIND