Wind Speed, Stability and Eddy Viscosity over Melting Ice Surfaces
M. E. Grainger
Bok · Språk ikke angitt · 1966
| Utgitt | 1966
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| Omfang | s.101-127
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| Opplysninger | Fra: Journal of Glaciology, Vol. 6, No. 43, 1966. - The laws of wind-speed variation with height and their modification with stability are discussed and applied to observations in the first 2 m. over various cold surfaces. An exponential law is superior save in frequent, near-neutral conditions, but the logarithmic law is superior in neutral and again in really stable conditions. A power law and a logarithmic-plus-linear law give the best fit with the data only at moderate stabilities. A logarithmic-plus-cubic law of wind speed is evolved that permits suppression of linear additions to the logarithmic law at two distinct stabilities. A power form of variation of Richardson number with height is found and compared with a linear form. The former is applied with the logarithmicplus-cubic law to the observed data, though with limited success. Eddy-viscosity coefficients for the different laws are compared.
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| Emner | glasiologi geografi
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