Early MITHRAS results: the electric field response to substorms

Technical Report · Thu Dec 01 04:00:00 EST 1983

OSTI ID:5728072

Beaujardiere, O; Holt, J; Nielsen, E

The MITHRAS data base offers a unique opportunity to observe simultaneously the auroral-zone ion-convection pattern with three radars, widely separated in longitude. The authors attempt to separate local-time versus universal-time effects in a study of the electric field signature associated with substorms. Preliminary results indicate that this signature is similar at a given local time, regardless of the longitude of the station. In the dawn and dusk sectors the electric field is intensified, whereas around noon and midnight the electric field appears to reverse during a substorm. The potential drop across the polar cap can be estimated from the potential across the auroral oval. The radar agree well with the relationship found by Reiff and co-workers between the solar wind energy parameter epsilon and the cross-tail potential.

• Research Organization: SRI International, Menlo Park, CA (USA)
• OSTI ID: 5728072
• Report Number(s): AD-A-164222/2/XAB
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AURORAL ZONES
EARTH ATMOSPHERE
ELECTRIC FIELDS
ENERGY
ENERGY SOURCES
GRAVITY WAVES
INCOHERENT SCATTERING
IONOSPHERE
MAGNETIC STORMS
MEASURING INSTRUMENTS
PLANETARY IONOSPHERES
RADAR
RANGE FINDERS
RENEWABLE ENERGY SOURCES
SCATTERING
SOLAR ACTIVITY
SOLAR ENERGY
SOLAR WIND