Computer Science – Sound
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...249..349m&link_type=abstract
Astrophysical Journal, Part 1, vol. 249, Oct. 1, 1981, p. 349-371.
Computer Science
Sound
55
Adiabatic Equations, Chromosphere, Gravity Waves, Internal Waves, Solar Atmosphere, Wave Propagation, Atmospheric Models, Group Velocity, Linear Equations, Photosphere, Sound Waves
Scientific paper
The properties of adiabatic and linear internal gravity waves propagating in a solar wind model are discussed, using nonlinearity criteria unique to gravity waves to estimate wave-breaking heights. The results are used to deduce information on the possible role of gravity waves in the chromospheric energy balance. Maximum vertical velocity amplitudes for gravity waves are estimated to be on the order of 2 km/sec or less, and maximum horizontal velocity amplitudes are less than 6 km/sec, with temperature perturbations as large as 1000-2000 K. It is also estimated that gravity waves with an incident energy flux of one million ergs/sq cm-sec can propagate upward to a maximum height of 900-1000 km above the visible surface before nonlinearities lead to wave breaking, while those with an energy flux of 100,000 ergs/sq cm-sec can reach maximum heights of 1400-1600 km.
Mihalas Barbara Weibel
Toomre Juri
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