Physics
Scientific paper
Apr 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975phfl...18..490t&link_type=abstract
Physics of Fluids, vol. 18, Apr. 1975, p. 490, 491. Navy-USAF-supported research.
Physics
34
Atmospheric Physics, Convective Flow, Gravitational Effects, Magnetic Effects, Magnetic Field Configurations, Vertical Distribution, Adiabatic Conditions, Atmospheric Turbulence, Buoyancy, Critical Temperature, Gas Pressure, Geomagnetism, Inviscid Flow, Schwarzschild Metric, Temperature Gradients
Scientific paper
Newcomb's criterion for convective stability in the presence of a horizontal magnetic field is derived as an equation which explicitly shows the effect of vertical variations in the magnetic field strength. For a uniform magnetic field, the equation is reduced to a form which is identical to the Schwarzschild criterion in the absence of a magnetic field, demonstrating that such a field has no effect on the condition for the onset of convective instability. For a nonuniform magnetic field, it is shown that convective instability will result if the magnetic pressure decreases more rapidly than the critical temperature rate.
Nye Alan H.
Thomas Jordan H.
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