Current trends of coastal research in the Netherlands
Recent Dutch coastal research has also emphasized several other areas of study, including the geologic history of the coastal belt, coastal ecology, and coastal processes. In the latter area, the complex interaction between tidal currents, waves
This study presents results on sedimentation fluxes obtained during deployments of a tripod equipped with sediment traps and instruments for measuring wave and current parameters in each of two environments (Løgstør Broad and Amstrup Bay), dominated
A simple model for current speed in tidal channels
Coastal environment ; Denmark ; Hydrodynamics ; Model ; Sea level ; Storm ; Tidal creek ; Tidal current ; Wind
This paper presents a simple non-distributed, PC-based model describing current speed in a tidal channel based on the continuity equation with tide gauge water level as the only time dependent input parameter. This model is tested in a tidal channel
in the Danish Wadden Sea. This type of model can be used to extend and/or complete time series of current speed in a particular tidal channel and to make quick estimates of the current speed, with a minimum of information and CPU consumption.
Coastal environment ; Indian Ocean ; METEOSAT ; Marine hydrology ; Meander ; NOAA ; Ocean atmosphere interaction ; Remote sensing ; Sea current ; South Africa
The role played by large solitary meanders on the flow of the Agulhas Current is reviewed and a tentative classification of meander types is proposed. - (AJC)
Acoustic Doppler current profiler measurments in coastal and estuarine environments : examples from the Tay Estuary, Scotland
Coastal environment ; Current ; Estuary ; Geophysics ; Model ; Scotland ; Suspended load ; United Kingdom ; Water circulation
Acoustic Doppler current profilers (ADCPs) provide a means to measure the components of water current velocities in three dimensions. Using examples of ADCP datasets acquired from the macrotidal Tay Estuary, eastern Scotland, the principles of field
deployment, data acquisition and forms of output are critically summarised. It is shown for the first time in the Tay Estuary, that vertical current velocities are significant and are particularly so in downwelling zones associated with the development
Data collected in the nearshore region between Point Lay and Icy Cape, Alaska, support the thesis that a well-developed coastal jet is present during the summer. The temporal variability of the current is as predicted by theory. The physical
characteristics of the region suggest a strong signal-to-noise ratio for the baroclinic coastal jet. It is probably the dominant mode of summer coastal circulation for the entire Chukchi Sea coast of the Alaskan North Slope.
Coastalcurrent ; Coastal environment ; European part of Russia ; Kaliningrad ; Marine sedimentation ; Sediment transport
At the northern coast of the Sambian Peninsula longshore sediment drift proceeds in the form of short (up to 3-4 km) oppositely directed flows; zones of their divergence are located at the coastal protrusions (cusps), while the convergence takes
place in heads of bights. Several stable lithodynamic cells have been identified; exchange of energy and sediments between them is hampered. The sediment transport within each cell is effected by longshore energetic currents, rip currents developing
within convergence zones of the energetic currents, and by longshore gradient currents resulting from the water surface denivelations due to wave transformations over the sea floor elevations. - (L'Ed.).
Questions of coastal protection and the human response to sea-level rise in Ireland and Britain
Coastal environment ; Coastal management ; Coastal protection ; Concept ; England ; Environment ; Global change ; Ireland ; Sea level ; United Kingdom
coasts into the next century. In particular, the current approaches to coastal management and the lack of coherent national policies in this field are evaluated.
This discussion aims at placing the problems and prospects for effective coastal management in Ireland, and more widely in the British Isles as a whole, in the context of the likely physical environmental changes that might be expected around our
Waves and sandbar erosion in the Grand Canyon: applying coastal theory to a fluvial system
Arizona ; Canyon ; Coastal dynamics ; Current ; Erosion ; Fluvial processes ; Hydraulic works ; Hydrodynamics ; Model ; Sediment transport ; United States
The purpose of this paper is to evaluate the relative importance of surface-gravity waves on sandbar stability in Grand Canyon, in contrast to unidirectional currents that are the primary focus of most fluvial studies. A second objective
is to evaluate the utility of coastal theory and methodology in the investigation of river sandbar stability. Such information may be useful in the development of management strategies for the Colorado River below Grand Canyon Dam and other regulated rivers where
Direct measurements of seabed stress are difficult, especially in field conditions. Several methods for estimating these stresses using current meter data are available. Two of these methods, the Inertial Dissipation Method and the Turbulent Kinetic
Energy Method, are described, and a Matlab program is used to analyse data from a wave-current environment.
Temporal and spatial evolution of the coastal profiles along the Yellow River Delta over last three decades
China ; Coastalcurrent ; Coastal dynamics ; Coastal environment ; Coastal erosion ; Delta ; Huang He ; Principal components analysis ; Spatial analysis ; Suspended load
This paper presents a data-based study of waves, currents, sediments and subaqueous bedforms including the application of Principal Component Analysis (PCA) to the measured coastal profiles in order to understand qualitative and quantitative