+ Visit NASA.gov + Contact NASA   + Home Collection > NASA  Author > Leibacher, J. W.  Author > Stein, R. F.  NASA Center > NASA (non Center Specific)  Publication Year > 1971-1980 > 1980  Subject > A-C > Astrophysics  Availability Options > Order From Other Sources  Item/Media Type > Conference Proceedings  Note: Start a new navigation search by selecting a link above     Previous Record | Next Record + Back to Results   + Printer Friendly Title: Mechanical energy transport Author(s): Stein, R. F.; Leibacher, J. W. Abstract: The properties, generation, and dissipation mechanisms of acoustic, gravity and Alfven waves are described, whose restoring forces are pressure, buoyancy, and magnetic tension, respectively. For acoustic waves, generation by turbulent convective motions and by the Eddington Valve thermal overstability is discussed, considering the 'five-minute' oscillation; dissipation is possible either by radiation or shocks. Generation of gravity waves by penetrative convective motions and by shear arising from supergranule motions is reviewed, and dissipation due to wave breaking, interaction with the mean horizontal fluid flow, and very severe radiative damping is considered. Attention is given to Alfven wave generation by convective motions and thermal overstability, and to dissipation by mode coupling, wave decay, current dissipation, and particle collisions producing Joule or viscous heating. NASA Center: NASA (non Center Specific) Publication Date: JAN 1, 1980 Document Source: Other Sources No Digital Version Available: Go to Tips On Ordering Document ID: 19800051398 Accession ID: 80A35568 Publication Information: Number of Pages = 23 Contract-Grant-Task Number: F19678-77-C-0068 Meeting Information: Stellar turbulence, August 27-30, 1979, Ontario, Canada Keywords: ATMOSPHERIC TURBULENCE; CONVECTIVE FLOW; ENERGY DISSIPATION; ENERGY TRANSFER; STELLAR ATMOSPHERES; TRANSPORT THEORY; COUPLED MODES; GRAVITY WAVES; LOW LEVEL TURBULENCE; MAGNETOHYDRODYNAMIC WAVES; PARTICLE COLLISIONS; RESISTANCE HEATING; SOUND WAVES; Notes: In: Stellar turbulence; Proceedings of the Fifty-first Colloquium, London, Ontario, Canada, August 27-30, 1979. (A80-35551 14-90) Berlin and New York, Springer-Verlag, 1980, p. 225-247. Research supported by the Lockheed Independent Research Fund Accessibility: Unclassified; Copyright; Unlimited; Publicly available; Updated/Added to NTRS: 2004-11-03 + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007