Wave-current interaction in Willapa Bay
191
Citation
60
Reference
10
Related Paper
Citation Trend
Abstract:
This paper describes the importance of wave-current interaction in an inlet-estuary system.The three-dimensional, fully coupled, Coupled Ocean-Atmosphere-Wave-Sediment Transport (COAWST) modeling system was applied in Willapa Bay (Washington State) from 22 to 29 October 1998 that included a large storm event.To represent the interaction between waves and currents, the vortex-force method was used.Model results were compared with water elevations, currents, and wave measurements obtained by the U.S. Army Corp of Engineers.In general, a good agreement between field data and computed results was achieved, although some discrepancies were also observed in regard to wave peak directions in the most upstream station.Several numerical experiments that considered different forcing terms were run in order to identify the effects of each wind, tide, and wave-current interaction process.Comparison of the horizontal momentum balances results identified that wave-breaking-induced acceleration is one of the leading terms in the inlet area.The enhancement of the apparent bed roughness caused by waves also affected the values and distribution of the bottom shear stress.The pressure gradient showed significant changes with respect to the pure tidal case.During storm conditions the momentum balance in the inlet shares the characteristics of tidal-dominated and wave-dominated surf zone environments.The changes in the momentum balance caused by waves were manifested both in water level and current variations.The most relevant effect on hydrodynamics was a wave-induced setup in the inner part of the estuary.Gulf Stream
Cite
Citations (0)
Tidal current
Clockwise
Cite
Citations (3)
A numerical simulation of the East Australian Current (EAC) has been used to investigate the nutrification of shelf waters at Jervis Bay, south-eastern Australia, prior to the massive coccolithophorid bloom that was first observed on 16 December 1992. The simulation suggests that a small cold-core eddy developed between the continental slope at Jervis Bay and the EAC jet further offshore during 7 and 14 December 1992. This unstable cold-core eddy is likely to have uplifted cold, nutrient-rich water onto the Jervis Bay shelf, and this upwelling, in combination with upwelling-favourable winds, probably transported nutrients from the deep ocean to the entrance of the bay.
Bloom
Biogeochemistry
Cite
Citations (18)
In this paper, the characteristics of tidal current distribution in Zhapu section of Hangzhou Bay are analyzed and discussed, using the synchronous observed tidal current data obtained from 8 stations of Zhapu section during September, 2000. The results show that in the section, two current cores with a greater speed occur at flood race, the current speed in the southern part is greater than that in the northern part, and the flood current speed is greater than the ebb current speed. It is useful to understand the hydrological characteristics in the Hangzhou Bay, and great value to the construction of the Hangzhou Bay Major Bridge.
Tidal current
Section (typography)
Cite
Citations (4)
Bloom
Cite
Citations (14)
Cite
Citations (0)
:The information obtained from the two investigations of May and November to December 1994 and the observations from eight observatories located in the east, middle and west channels and relevant areas are used to analyze the characteristics of tidal currents in the Qingzhou Bay. The tidal current characteristics are as follows. The velocities of ebb tidal current are larger than flood current. The current velocities in the east part are lower than those in the west part. Ebb tidal current velocities in summer are always larger than those in winter. Current velocities in Long- men Channel is largest. Residual current circulation is a cyclonic circulation. The residual current in the east part gets into the bay, and goes out of the bay in the west part. The water coming from outside the bay in the east part is cleaner than that in the west. Comparied with the water in the west, the water in the east has higher salinity, less pollutant matters and less heavy metals in the bottom mud.
Tidal current
Cite
Citations (2)
Nova scotia
Cite
Citations (43)
Circulation (fluid dynamics)
Water circulation
Cite
Citations (17)
Dongshan Bay is an excellent natural harbour in Fujian.The data obtained from 3 investigations in August 2008 with 11 observatories located in Dongshan Bay are used to analyze the type and the motion form of tidal current,the characteristics of flood current,ebb current and the residual current in Dongshan bay combining with historical survey observations.The results show that the tidal property in Dongshan Bay belongs to regular semidiurnal tide.The action of tide current is strong and the flow velocity is currently more than 100cm/s in the bay mouth area and the channel.The residual current is obviously influenced by the wind of relatively long duration and the horizontal residual current is counterclockwise in the bay during the spring tide.
Tidal current
Clockwise
Cite
Citations (2)