scholarly journals Coastal Erosion Due to Decreased Ice Coverage, Associated Increased Wave Action, and Permafrost Melting

2019 ◽  
Author(s):  
Dimitrios Kostopoulos ◽  
Efrat Yitzhak ◽  
Ove T. Gudmestad
Keyword(s):  
Coastal Erosion ◽  
Wave Action ◽  
Ice Coverage

scholarly journals The influence of wave action on coastal erosion along Monwabisi Beach, Cape Town

2015 ◽  
Vol 4 (2) ◽  
pp. 96 ◽  
Author(s):  
JP Fourie ◽  
I Ansorge ◽  
B Backeberg ◽  
HC Cawthra ◽  
MR MacHutchon ◽  
...  
Keyword(s):  
Coastal Erosion ◽  
Cape Town ◽  
Wave Action

Numerical Analysis of the Turbulent Flow Characteristics Around Submerged Permeable Breakwaters

2018 ◽  
Author(s):  
William Foltz ◽  
Ning Zhang
Keyword(s):  
Coastal Erosion ◽  
Flow Characteristics ◽  
Wave Action ◽  
Water Bodies ◽  
Numerical Comparison ◽  
Ansys Fluent ◽  
Wave Patterns ◽  
Pass Through ◽  
Coastal Louisiana ◽  
Good Agreement

A breakwater is a structure used to reduce the energy of waves. When used properly, they can protect coasts from being affected by waves. One such application is to lessen erosion along Louisiana’s coastlines, where wave action is strong and is the main source of the erosion. Additionally, the breakwater can change how sediments are transported, and allow for the deposition and accumulation of sediment at target areas. This research aims to give a numerical comparison of the effectiveness of three different breakwater designs, and reveal the turbulence characteristics downstream of the breakwaters. Three breakwaters are examined: a solid panel without any holes, another panel with one hole, and a third panel with three holes. These breakwaters are expected to be placed on the banks of various water bodies in coastal Louisiana, to protect the surrounding wetlands from coastal erosion and land losses. The designs aim to reduce the wave action from the water bodies, while the holes on them allow the sediments to pass through and deposit on the wetlands downstream. To run the simulations, the CFD software ANSYS FLUENT was used. The numerical results were compared to experimental data, and the good agreement proves the accuracy of the results. The effects of different wave patterns on the downstream turbulence were also analyzed and discussed in this study.

scholarly journals Potential effects of climate change on northwest Portuguese coastal zones

2009 ◽  
Vol 66 (7) ◽  
pp. 1497-1507 ◽  
Author(s):  
Carlos Coelho ◽  
Raquel Silva ◽  
Fernando Veloso-Gomes ◽  
Francisco Taveira-Pinto
Keyword(s):  
Climate Change ◽  
Numerical Model ◽  
Coastal Erosion ◽  
Wave Action ◽  
Coastal Zones ◽  
Negative Effects ◽  
Coastal Evolution ◽  
Shoreline Evolution ◽  
Environmental Actions ◽  
Anthropogenic Intervention

Abstract Coelho, C., Silva, R., Veloso-Gomes, F., and Taveira-Pinto, F. 2009. Potential effects of climate change on northwest Portuguese coastal zones. – ICES Journal of Marine Science, 66: 1497–1507. Coastal erosion is a common problem in Europe; a result of the dynamic nature of its coastal zones, of anthropogenic influences, such as coastal interventions and littoral occupation, and of the effects of climate change. The increase in the occurrence of extreme events, the weakening of river-sediment supplies, and the general acceleration of sea level rise (SLR) probably tends to aggravate coastal erosion on decadal time-scales. Describing vulnerability and risk patterns for energetic environmental actions is important for coastal planning and management to rationalize the decision-making process. To minimize negative effects, the various processes causing erosion must be understood to assess the possible prediction scenarios for coastal evolution in the medium to long term. This paper describes the application of a coastal (shoreline evolution) numerical model to a stretch of the Portuguese coast to determine the effects of various scenarios of wave action and SLR that might result from climate change over the next 25 years. We conclude that the effects of SLR are less important than changes in wave action. The numerical model was also applied in a generic situation to compare shoreline evolution with and without anthropogenic intervention.

Development and Application of a Mathematical Model of Wave Action on Steep Slopes

1989 ◽  
Author(s):  
N. W. H. Allsop ◽  
J. V. Smallman ◽  
R. V. Stephens
Keyword(s):  
Mathematical Model ◽  
Wave Action ◽  
Steep Slopes

Magnitude of the β-Factor Under Wave Action

1987 ◽  
Author(s):  
J. van de Graaff ◽  
R. C. Steijn
Keyword(s):  
Wave Action

Field and Model Study on the Protection of Recreational Beach against Wave Action

1974 ◽  
Author(s):  
Shoji Sato ◽  
Norio Tanaka
Keyword(s):  
Wave Action ◽  
Model Study ◽  
Recreational Beach

SIGIEC application: an integrated system for management of coastal erosion

2016 ◽  
Vol 38 ◽  
pp. 51-54 ◽  
Author(s):  
Alessandro Greco ◽  
Davide Furci ◽  
Federica Sbrana ◽  
Rocco Dominici
Keyword(s):  
Coastal Erosion ◽  
Integrated System

Patterns in diversity and composition of the microbenthos of subarctic intertidal beaches with different morphodynamics

2020 ◽  
Vol 648 ◽  
pp. 19-38
Author(s):  
AI Azovsky ◽  
YA Mazei ◽  
MA Saburova ◽  
PV Sapozhnikov
Keyword(s):  
Species Abundance ◽  
Abundance Ratio ◽  
Wave Action ◽  
Coarse Grained ◽  
Sediment Properties ◽  
Β Diversity ◽  
Α Diversity ◽  
Wide Range ◽  
Similar Mode ◽  
Abundance And Diversity

Diversity and composition of benthic diatom algae and ciliates were studied at several beaches along the White and Barents seas: from highly exposed, reflective beaches with coarse-grained sands to sheltered, dissipative silty-sandy flats. For diatoms, the epipelic to epipsammic species abundance ratio was significantly correlated with the beach index and mean particle size, while neither α-diversity measures nor mean cell length were related to beach properties. In contrast, most of the characteristics of ciliate assemblages (diversity, total abundance and biomass, mean individual weight and percentage of karyorelictids) demonstrated a strong correlation to beach properties, remaining low at exposed beaches but increasing sharply in more sheltered conditions. β-diversity did not correlate with beach properties for either diatoms or ciliates. We suggest that wave action and sediment properties are the main drivers controlling the diversity and composition of the intertidal microbenthos. Diatoms and ciliates, however, demonstrated divergent response to these factors. Epipelic and epipsammic diatoms exhibited 2 different strategies to adapt to their environments and therefore were complementarily distributed along the environmental gradient and compensated for each other in diversity. Most ciliates demonstrated a similar mode of habitat selection but differed in their degree of tolerance. Euryporal (including mesoporal) species were relatively tolerant to wave action and therefore occurred under a wide range of beach conditions, though their abundance and diversity were highest in fine, relatively stable sediments on sheltered beaches, whereas the specific interstitial (i.e. genuine microporal) species were mostly restricted to only these habitats.

South Carolina Coastal Erosion Study, Data Report for Observations, October 2003 - April 2004

2006 ◽  
Author(s):  
Charlene M. Sullivan ◽  
John C. Warner ◽  
Marinna A. Martini ◽  
George Voulgaris ◽  
Paul Work ◽  
...  
Keyword(s):  
South Carolina ◽  
Coastal Erosion ◽  
Study Data
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