Results 261 to 270 of about 457,707 (309)

Longshore Currents, Upwelling and Bottom Topography

Journal of Physical Oceanography, 1974
Abstract The effect of shelf-like bottom topography on a steady, linear, stratified, three-dimensional model of coastal upwelling is examined. It is shown that the presence of the bottom slope 1) reduces the role of the lower Ekman layer in the upwelling mass balance, and 2) introduces a barotropic boundary layer which can, depending on a balance of ...
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Bottom Shear Stress Under Wave-Current Interaction

Journal of Hydrodynamics, 2008
Abstract The present work adopts the COHERENS-SWAN model developed by the first author through coupling three-dimensional hydrodynamic model (COHERENS) and third-generation wave model (SWAN). Inside the COHERENS-SWAN, the SWAN is regarded as a subroutine and the time- and space-varying current velocity and surface elevation are obtained from the ...
Bing-chen Liang, Hua-jun Li, Dong-yong Lee   +2 more
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Dense Bottom Currents

1986
A dense bottom current or a light roof current is the flow created by a source of mass, momentum, and buoyancy flowing into an ambient fluid in such a way that the flow is bounded by the fixed wall and the interface. The dense bottom currents and light roof currents are primarily driven by buoyancy forces.
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A retrievable bottom-mounted current meter

Ocean Engineering, 1973
Abstract The design and use of a lightweight, retrievable, bottom-mounted current meter for taking current measurements to ocean depths of 1800 m are described.
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Dense Bottom Currents in Rotating Ocean

Journal of the Hydraulics Division, 1980
A dense bottom current is the flow created by a source of mass, momentum, and buoyancy flowing into an ambient fluid in such a way that the flow is bounded by the fixed wall and the interface. The dense bottom currents are primarily driven by buoyancy forces (reduced gravity).
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Entrainment by bottom currents in Lake Erie

Limnology and Oceanography, 1982
Previous studies of the central basin of Lake Erie have indicated, on the basis lakewide budgets of heat and dissolved oxygen, that the thickness of the hypolimnion and the interaction of the hypolimnion with the overlying fluid are important factors governing the dissolved oxygen concentration in the near‐bottom water.
G. N. Ivey, F. M. Boyce
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A Bottom Current Along the Shelf Break

Journal of Physical Oceanography, 1975
Abstract The theory of Hill and Johnson for upwelling over the shelf break is modified to give agreement with the work of Killworth. It is shown that when upwelling occurs over a discontinuity in bottom slope, this upwelling does not penetrate into the surface Ekman layer.
J. A. Johnson, P. D. Killworth
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Bottom current measurements in the Tasman Sea

Journal of Geophysical Research, 1969
Bottom current velocities of 1 to 9 cm/sec were measured for periods of 0.5 to 1.2 hours at five sites in the Tasman Sea. At four sites a northerly component was present. Bottom photographs indicate stronger currents have occurred at several sites. The results in most cases support previous ideas on flow inferred from water properties.
N. P. Laird, T. V. Ryan
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Extreme Bottom Currents in the North Sea

1983
During the last ten years currents have been measured at several locations in the North Sea. Due to the offshore activity special emphasis has been placed on currents in deeper layers of the sea and near the bottom. In 1978 the Norwegian Hydrodynamic Laboratories (NHL) commenced a project for Geoteam/Phillips Petroleum Company A/S to measure current ...
S. Tryggestad, K. A. Selanger, J. P. Mathisen, Ø. Johansen   +3 more
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Ocean bottom mapping--Current status and requirements

OCEAN 75 Conference, 1975
As exploration of the world's oceans continue, our analysis and portrayal of the sea floor topography becomes increasingly important. Such knowledge is necessary not only to maintain the safety of the world's mariner, but it is also essential to conserve and exploit the natural wealth in and under the seas.
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