Sediments and water fluxes in a muddy coastline : interplay between waves and tidal channel hydrodynamics
Coastal dynamics ; Coastal environment ; Intertidal zone ; Louisiana ; Sediment transport ; Storm wave ; Tidal creek ; United States of America ; Wave ; Wind
measurements were integrated with measurements of wave activity in the bay at the mouth of the channel, thus allowing the quantification of feedbacks between waves and sediment fluxes. Results indicate that the sediment concentration in the channel is directly
related to the wave height in the adjacent bay during flood and high slack water, whereas the concentration during ebb depends on local channel velocity.
Backshore coarsening processes triggered by wave-induced sand transport : the critical role of storm events
Aeolian features ; Coastal dynamics ; Coastal environment ; Honshu ; Ibaraki ; Japan ; Sand ; Sediment transport ; Spatial distribution ; Storm ; Wave
This study aims to demonstrate that backshore processes at a sandy beach facing the Pacific Ocean in Japan are a result of both wave and wind actions. This is achieved through a field analysis of the beach topography and sand grain size
Australia ; Coastal environment ; Earth surface processes ; Hydrodynamics ; Model ; New South Wales ; Numerical model ; Sand bar ; Sediment transport ; Self-organizing behaviour ; Wave
Here the AA. use a nonlinear morphodynamic model to show that alongshore variability in outer-bar depth, and the relative importance of wave breaking versus wave focussing by refraction across the outer bar, is crucial to the inner-bar rip channel
Coastal environment ; Coastal erosion ; Delta ; Erosion control ; Land use ; Monsoon ; Numerical model ; Thailand ; Tropical zone ; Wave
Seasonal variation in seabed elevation in the muddy intertidal zone of the Chao Phraya River delta was assessed using information on waves and tides predicted by numerical simulations. Observations, aimed at evaluating the effectiveness
of a prototype breakwater on mitigating coastal erosion, indicated that the seasonal variation in the seabed elevation was caused primarily by seasonal changes in wave direction and height. The breakwater seems to have contributed to a net rise in the seabed
, the causes, occurrences and warnings of freak waves, the worldwide trends in ocean cruising tourism, the question of control the fabled Northwest Passage, the background for overfishing and options for better fishery management. - (IfL)
al. (2009) and the empirical dune roughness predictor of Van Rijn (1984). The approach is illustrated by applying it to a river of simple geometry in the 1-D hydraulic model SOBEK for two different flood wave shapes. The new approach helps to reduce
be considered as a key to understanding how this coarse material is transported across the tidal flat, and finally accumulated as cheniers. Further flume experiments including wave activity and tidal fluctuations are necessary to better quantify these complex
Double sandbar systems are common morphological features along sandy, wave-dominated, micro- to meso-tidal coastlines. Here the AA. use a numerical model to show that the relative importance of self-organization and morphological coupling changes
internal in-phase waves develop over each of the larger dunes, with water from the salt-wedge reaching the surface of the estuary. It is showed that bed friction is more important in interfacial mixing over the dunes than over the flat-bed
of this paper is to highlight this finding. It is suggested that the observed changes in rainfall might result from the redistribution of energy (associated with upper-level changes to Rossby waves) or, of more concern, model error, and therefore the paper
Five diagnostic experiments with a 3D baroclinic hydrodynamic and sediment transport model ECOMSED in couple with the third generation wave model SWAN and the Grant-Madsen bottom boundary layer model driven by the monthly sediment load of the Yellow
. The historical capital has received several successive waves of Chinese migrants, who eventually “colonized” the center and transformed centrally located neighborhood districts. The phenomenon apparently met with little resistance, given the open collusion
circulation structure in vertical direction in both the high and lower temperature years are barotropic. It is found that the emergence and maintenance of these anomalous circulations are related to three kinds of wave train teleconnection patterns.