scholarly journals EVALUATION OF SEAGRASS AS A WAVE ENERGY DISSIPATION ELEMENT

2012 ◽  
Vol 1 (33) ◽  
pp. 17
Author(s):  
Edgar Mendoza ◽  
Jose Hoil ◽  
Rodolfo Silva ◽  
Cecilia Enriquez
Keyword(s):  
Energy Dissipation ◽  
Shallow Water ◽  
Wave Energy ◽  
Bottom Friction ◽  
Coastal Protection ◽  
Sediment Stability ◽  
Sea Floor ◽  
Wave Energy Dissipation ◽  
Disturbed Areas ◽  
Depth Reduction

In shallow water, particularly near the coast, the hydrodynamics are influenced by bottom friction which, increases with depth reduction and the complexity of the sea floor, mostly in the presence of vegetation. Although little is still known about the seagrass capability to reduce wave energy, it is known to increase the sediment stability in anthropogenically disturbed areas; hence the interest of evaluating their efficiency as a means for coastal protection.

MORPHODYNAMICS OF COASTAL TIDAL SUBARCTIC SEAS AFTER A STABLE TRANSITION OF AVERAGE DAILY TEMPERATURE THROUGH 0 AND COASTAL PROTECTION

2018 ◽  
Author(s):  
В. Афанасьев ◽  
V. Afanas'ev
Keyword(s):  
Energy Dissipation ◽  
Wave Energy ◽  
Basic Structure ◽  
Long Waves ◽  
Coastal Protection ◽  
Average Daily Temperature ◽  
Wave Energy Dissipation ◽  
Beach Sediments ◽  
Coastal Profile ◽  
Hydrodynamic Effects

It was noted that in a homogeneous coastal bluffs, the beach at comparable settings (the basic structure of the wave energy dissipation), and hydrodynamic effects (tides, surges, long waves and wind), the most intense erosion occurs in November–January. During this period, at the upper levels of the coastal profile, which are equilibrium for storm conditions with maximum tides, beach sediments are freezing and the consequent deterioration of their dissipation properties. Loss of redistribution of snow and blizzard in the profile essentially simulates morphodynamics beach properties at this time.

Assessment of random wave energy dissipation due to submerged aquatic plants in shallow water using deep water wave conditions

2021 ◽  
pp. 147509022110399
Author(s):  
Dag Myrhaug ◽  
Pierre-Yves Henry
Keyword(s):  
Energy Dissipation ◽  
Shallow Water ◽  
Deep Water ◽  
Aquatic Plants ◽  
Wave Energy ◽  
Water Wave ◽  
Random Wave ◽  
Wave Energy Dissipation ◽  
Submerged Aquatic Plants ◽  
Deep Water Wave

This article addresses the random wave energy dissipation due to submerged aquatic plants in shallow water based on deep water wave conditions including estimation of wave damping. The motivation is to provide a simple engineering tool suitable to use when assessing random wave damping due to small patches of plants in shallow water. Examples of application for typical field conditions are provided. The present method versus common practice is discussed. A possible application of the outcome of this study is that it can be used as a parameterization of wave energy dissipation due to vegetation patches of limited size in operational estuarine and coastal circulation models.

scholarly journals ARPEC: A NOVEL STAGGERED PERFORATED CAISSON FOR WAVE ABSORPTION AND TIDAL FLUSHING

2020 ◽  
pp. 26
Author(s):  
Paolo Sammarco ◽  
Leopoldo Franco ◽  
Giorgio Bellotti ◽  
Claudia Cecioni ◽  
Stefano DeFinis
Keyword(s):  
Energy Dissipation ◽  
Water Flow ◽  
Wave Energy ◽  
Reflection And Transmission ◽  
Wave Energy Dissipation ◽  
Wave Absorption ◽  
Transmission Coefficients ◽  
Open Sea ◽  
Caisson Breakwater ◽  
Perforated Caisson

An innovative caisson breakwater geometry (patent pending) named "ARPEC" (Anti Reflective PErmeable Caisson) includes openings at all external and internal walls and at lateral (cross) ones, yet in a staggered pattern, to provide a labyrinthian hydraulic communication between the open sea and the internal waters. The complex sinuous water-flow within the consecutive permeable chambers thus favors wave energy dissipation as well as port water flushing and quality, with very low reflection and transmission coefficients. 2D lab model tests demonstrate the system effectiveness.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/PaUsinYO-Zo

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