Numerical models of planetary dynamos

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:6991156

Glatzmaier, G A ^[1]; Roberts, P H ^[2]

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1. Los Alamos National Lab., NM (United States)
2. California Univ., Los Angeles, CA (United States). Inst. of Geophysics and Planetary Physics

We describe a nonlinear, axisymmetric, spherical-shell model of planetary dynamos. This intermediate-type dynamo model requires a prescribed helicity field (the alpha effect) and a prescribed buoyancy force or thermal wind (the omega effect) and solves for the axisymmetric time-dependent magnetic and velocity fields. Three very different time dependent solutions are obtained from different prescribed sets of alpha and omega fields.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: National Aeronautic and Space Administration (NASA); National Aeronautics and Space Administration, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6991156
• Report Number(s): LA-UR-92-3819; CONF-9207166-1; ON: DE93003848
• Resource Relation: Conference: 1992 Studies of the earth's deep interior (SEDI) symposium, Mizusawa (Japan), 5-10 Jul 1992
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GEOMAGNETIC FIELD
MATHEMATICAL MODELS
AXIAL SYMMETRY
ELECTRICITY
MAGNETOHYDRODYNAMICS
FLUID MECHANICS
HYDRODYNAMICS
MAGNETIC FIELDS
MECHANICS
SYMMETRY
661320* - Auroral
Ionospheric
& Magnetospheric Phenomena- (1992-)