A comparison of different types of stress measurement
β Scribed by H. A. Panofsky
- Publisher
- John Wiley and Sons
- Year
- 1952
- Tongue
- English
- Weight
- 298 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0035-9009
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β¦ Synopsis
Abstract
Wind stresses computed from the profile of the mean wind at Brookhaven are compared with Reynolds stresses at 109m. Two methods are used to obtain the surface stress from the mean winds: one is based on three observations up to 125 m, the second on the observation at the lowest level only, as well as a roughness length determined previously.
The stresses found by both these techniques agree in order of magnitude with the Reynolds stresses, varying from about 1 to 10 dynes cm^β2^. With respect to actual numerical values, only the wind stress determined from the lowestβlevel wind agrees well with the Reynolds stress.
π SIMILAR VOLUMES
Two different types of shoreline boundary conditions which can be used in either wave-resolving or wave-averaging models of waves and currents propagation in the nearshore are compared here. The two techniques are essentially different: in the first case the velocity of the shoreline is obtained by