Dynamics of advection-driven upwelling over a shelf break submarine canyon
نویسندگان
چکیده
منابع مشابه
Flow Near Submarine Canyons Driven by Constant Winds
Circulation over coastal submarine canyons driven by constant upwelling or downwelling wind stress is simulated and analyzed with a primitive equation ocean model. Astoria Canyon, on the west coast of North America, is the focus of this study, and model results are consistent with most major features of mean canyon circulation observed in Astoria Canyon. Near-surface flow crosses over the canyo...
متن کاملGlider observations of enhanced deep water upwelling at a shelf break canyon: A mechanism for crossslope carbon and nutrient exchange
Using underwater gliders we have identified canyon driven upwelling across the Celtic Sea shelf-break, in the vicinity of Whittard Canyon. The presence of this upwelling appears to be tied to the direction and strength of the local slope current, which is in itself highly variable. During typical summer time equatorward flow, an unbalanced pressure gradient force and the resulting disruption of...
متن کاملTITLE AND SUBTITLE Water Mass Distribution on the Shelf and Shelf - Break Upwelling in the Southeast
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متن کاملThe Inner Shelf Response to Wind-Driven Upwelling and Downwelling*
A two-dimensional numerical model is used to study the response to upwellingand downwelling-favorable winds on a shelf with a strong pycnocline. During upwelling or downwelling, the pycnocline intersects the surface or bottom, forming a front that moves offshore. The characteristics of the front and of the inner shelf inshore of the front are quite different for upwelling and downwelling. For a...
متن کاملCirculation Near Submarine Canyons: A Modeling Study
Circulation near a submarine canyon is analyzed with a numerical model. Previous theoretical work indicated that stratification controlled the interaction of coastal flow with canyons, specifically, the ratio of canyon width to the internal radius of deformation. A wide canyon was thought to merely steer the flow, while a narrow canyon would create substantia• cross-shelf exchange. Four cases a...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2010
ISSN: 0148-0227
DOI: 10.1029/2009jc005731