Bottom Stress Estimates and their Prediction on the Northern California Continental Shelf during CODE-1: The Importance of Wave-Current Interaction
| Autor: | Albert J. Williams, Scott M. Glenn, William D. Grant |
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| Rok vydání: | 1984 |
| Předmět: | |
| Zdroj: | Journal of Physical Oceanography. 14:506-527 |
| ISSN: | 1520-0485 0022-3670 |
| DOI: | 10.1175/1520-0485(1984)014<0506:bseatp>2.0.co;2 |
| Popis: | High quality near-bottom boundary layer measurements obtained at a midshelf location (90 m water depth) in the CODE region off Northern California are described. Bottom tripod velocity measurements and supporting data obtained during typical spring and early summer conditions (June 1981 during CODE-1) are analyzed to obtain bath velocity profiles and mean bottom stress and bottom roughness estimates. During the time period described, the mean near-bottom ( 0.997) approximately 30 percent of the time. Effects induced by unsteadiness from internal waves result in some degradation of the profiles (0.96≤R≤0.997) the rest of the time. Mean stress profiles indicate the logarithmic layer is approximately a constant-stress layer. The near-bottom flow field is Composed of mean currents and oscillatory currents due to well. Typing mean u* values estimated from measurements greater than 30 cm above the bottom have magnitudes of 0.5–1.0 cm s−1. Mean stress valu... |
| Databáze: | OpenAIRE |
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