Some observations of turbulent flow in a tidal estuary
| Autor: | C. M. Gordon, C. F. Dohne |
|---|---|
| Rok vydání: | 1973 |
| Předmět: |
Atmospheric Science
Phase (waves) Soil Science Reynolds stress Aquatic Science Oceanography Physics::Fluid Dynamics Current meter Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Shear stress Geotechnical engineering Earth-Surface Processes Water Science and Technology Physics geography geography.geographical_feature_category Ecology Turbulence Paleontology Forestry Estuary Mechanics Tidal current Geophysics Space and Planetary Science Turbulence kinetic energy |
| Zdroj: | Journal of Geophysical Research. 78:1971-1978 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/jc078i012p01971 |
| Popis: | Times series of tidal current velocities were measured at various depths in an estuary with a pivoted vane current meter. The velocity data were analyzed to obtain mean longitudinal (U) and vertical (W) currents along with their respective turbulent fluctuations (u and w). Correlation of the fluctuating components allowed direct measurements of Reynolds stresses, τ = -ρ〈uw〉, which ranged from near zero at the surface to about 5 dynes/cm2 close to the bottom (7-meter depth). Variation of the turbulent kinetic energy q2 with shear stress was found to be approximately linear in cases where comparison was possible. The longitudinal 〈u2〉 and vertical 〈w2〉 components of the turbulent kinetic energy changed differently with depth and were related to tidal phase. |
| Databáze: | OpenAIRE |
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