Effect of wave climate change on longshore sediment transport in Southwestern Black Sea

2021 ◽  
pp. 107415
Author(s):  
Büşra Başaran ◽  
H. Anıl Arı Güner
Keyword(s):  
Climate Change ◽  
Sediment Transport ◽  
Black Sea ◽  
Wave Climate ◽  
Longshore Sediment Transport

scholarly journals LONG-TERM PREDICTION OF LONGSHORE SEDIMENT TRANSPORT IN THE CONTEXT OF CLIMATE CHANGE

2020 ◽  
pp. 15
Author(s):  
Amin Reza Zarifsanayei ◽  
Amir Etemad-Shahidi ◽  
Nick Cartwright ◽  
Darrell Strauss
Keyword(s):  
Climate Change ◽  
Sediment Transport ◽  
Climate Change Impacts ◽  
Baseline Period ◽  
Wave Climate ◽  
Total Uncertainty ◽  
Longshore Sediment Transport ◽  
Coastal Sediment Transport ◽  
Wave Energy Flux

Due to climate change impacts on atmospheric circulation, global and regional wave climate in many coastal regions around the world might change. Any changes in wave parameters could result in significant changes in wave energy flux, the patterns of coastal sediment transport, and coastal evolution. Although some studies have tried to address the potential impacts of climate change on longshore sediment transport (LST) patterns, they did not sufficiently consider the uncertainties arising from different sources in the projections. In this study, the uncertainty associated with the choice of model used for the estimation of LST is examined. The models were applied to a short stretch of coastline located in Northern Gold Coast, Australia, where a huge volume of sediment is transported along the coast annually. The ensemble of results shows that the future mean annual and monthly LST rate might decrease by about 11 percent, compared to the baseline period. The results also show that uncertainty associated with LST estimation is significant. Hence, it is proposed that this uncertainty, in addition to that from other sources, should be considered to quantify the contribution of each source in total uncertainty. In this way, a probabilistic-based framework can be developed to provide more meaningful output applicable to long-term coastal planningRecorded Presentation from the vICCE (YouTube Link): https://youtu.be/3CGU9RcGYjE

scholarly journals Future wave-climate driven longshore sediment transport along the Indian coast

2020 ◽  
Vol 162 (2) ◽  
pp. 405-424
Author(s):  
Piyali Chowdhury ◽  
Manasa Ranjan Behera ◽  
Dominic E. Reeve
Keyword(s):  
Sediment Transport ◽  
Wave Climate ◽  
Indian Coast ◽  
Longshore Sediment Transport

scholarly journals Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, France

2021 ◽  
Vol 9 (9) ◽  
pp. 1009
Author(s):  
Pushpa Dissanayake ◽  
Marissa L. Yates ◽  
Serge Suanez ◽  
France Floc’h ◽  
Knut Krämer
Keyword(s):  
Climate Change ◽  
Shear Stress ◽  
Sediment Transport ◽  
Climate Change Impacts ◽  
Wave Climate ◽  
Bed Shear Stress ◽  
Storm Events ◽  
Climate Scenarios ◽  
Wave Dynamics ◽  
Waves And Currents

Wave dynamics contribute significantly to coastal hazards and were thus investigated at Vougot Beach by simulating both historical and projected future waves considering climate change impacts. The historical period included a major storm event. This period was projected to the future using three globally averaged sea level rise (SLR) scenarios for 2100, and combined SLR and wave climate scenarios for A1B, A2, and B1 emissions paths of the IPCC. The B1 wave climate predicts an increase in the occurrence of storm events. The simulated waves in all scenarios showed larger relative changes at the beach than in the nearshore area. The maximum increase of wave energy for the combined SLR and wave scenarios was 95%, while only 50% for the SLR-only scenarios. The effective bed shear stress from waves and currents showed different spatial variability than that of the wave height, emphasizing the importance of interactions between nearshore waves and currents. Increases in the effective bed shear stress (combined scenarios: up to 190%, and SLR-only scenarios: 35%) indicate that the changes in waves and currents will likely have significant impacts on the nearshore sediment transport. This work emphasizes that combined SLR and future wave climate scenarios need to be used to evaluate future changes in local hydrodynamics and their impacts. These results provide preliminary insights into potential future wave dynamics at Vougot Beach under different climate change scenarios. Further studies are necessary to generalize the results by investigating the wave dynamics during storm events with different hydrodynamical conditions and to evaluate potential changes in sediment transport and morphological evolution due to climate change.

Longshore Sediment Transport Estimation at Areão Beach (NW Portugal) under Climate Change Scenario

2020 ◽  
Vol 95 (sp1) ◽  
pp. 479
Author(s):  
Sandra Fernández-Fernández ◽  
Paulo A. Silva ◽  
Caroline C. Ferreira ◽  
Pablo E. Carracedo-García
Keyword(s):  
Climate Change ◽  
Sediment Transport ◽  
Climate Change Scenario ◽  
Change Scenario ◽  
Nw Portugal ◽  
Longshore Sediment Transport

Sediment transport and shoreline shifts in response to climate change at the tidal inlets of Chilika, India

2018 ◽  
Vol 233 (1) ◽  
pp. 372-387 ◽  
Author(s):  
B Gopikrishna ◽  
MC Deo
Keyword(s):  
Climate Change ◽  
Sediment Transport ◽  
Climate Model ◽  
Regional Climate ◽  
Shoreline Change ◽  
Tidal Inlets ◽  
Littoral Drift ◽  
The Past ◽  
Longshore Sediment Transport ◽  
Other Information

The shoreline adjoining Chilika Lake, situated along India’s east coast, has multiple tidal inlets which connect the lake with Bay of Bengal. The shoreline behavior near such inlets is generally studied with the help of a suitable numerical model. Such models are run on the basis of historical data of waves and other information. However, the waves in future may show different strength and pattern than the past as a result of the climate change induced by global warming. It is thus necessary that the model input should correspond to future or projected data of wind and waves. In this work, we have used the wind information from a state-of-the-art regional climate model, CORDEX RegCM-4, of future 25 years in order to run a shoreline evolution model and have derived the longshore sediment transport rate as well as the shoreline change rate around Chilika inlets. These future values are compared with corresponding ones of the past 25 years. It is found that at the given location, mean wind might go up by 20%, and this could raise the mean significant wave height strongly by 32%. The direction and frequency of occurrence of waves would also change, and this in turn will cause an increase in the net littoral drift by 41% and net accumulated drift over the entire cross-shore width by 84%. Interestingly, the present site where accretion was prevalent in the past may see erosion in future at the rate of about 1 m per year.

scholarly journals LONGHORE SEDIMENT TRANSPORT ASSESSMENT BASED ON WAVE SYSTEMS

2020 ◽  
pp. 43
Author(s):  
Rodrigo Alonso ◽  
Sebastian Solari
Keyword(s):  
Sediment Transport ◽  
Coastal Management ◽  
Atlantic Coast ◽  
Wave Climate ◽  
Comprehensive Assessment ◽  
Coastal Morphology ◽  
Factors Influencing ◽  
Longshore Sediment Transport ◽  
Main Factors

Longshore sediment transport (LST) is one of the main factors influencing coastal morphology and its comprehensive assessment constitutes a valuable input for coastal management. In this work, the concept of long-term wave systems is used to analyze the wave climate of the Uruguayan Atlantic coast with focus on its impact on LST. It is shown how LST rate estimation changes by consider wave spectral partitions, identifies which wave systems contributes most to LST and provides a more detailed insight on its intra- and inter- annual variability and its correlation with climatic indexes.Recorded Presentation from the vICCE (YouTube Link):

Sea wave propagation from offshore to Maputo's coast. Application to longshore sediment transport assessment

2014 ◽  
Vol 69 (12) ◽  
pp. 2438-2445
Author(s):  
Cristina N. A. Viola ◽  
Manel Grifoll ◽  
Jaime Palalane ◽  
Tiago C. A. Oliveira
Keyword(s):  
Wave Propagation ◽  
Sediment Transport ◽  
Coastal Region ◽  
Wave Theory ◽  
Wave Climate ◽  
Linear Wave ◽  
Engineering Research ◽  
Longshore Sediment Transport ◽  
Mesh Resolution ◽  
Offshore Wave

This study aims to characterize the wave climate near the coastal region of Maputo (Mozambique), and to provide a first assessment of the sediment transport load in this area. A time-series of 13 years' worth of offshore wave data, obtained from reanalysis products, was propagated to the coast. Wave propagation was performed using Linear Wave theory and the numerical model, Simulating WAves Nearshore (SWAN). Propagations with SWAN were carried out considering different scenarios in order to evaluate the influence of parameters such as wind, tidal level, frequency spectrum and numerical mesh resolution on wave characteristics along the coast. The prevalent waves propagated came from between east and southwest directions. Results from linear propagation were used to estimate the potential longshore sediment transport. The Coastal Engineering Research Center formula was applied for a stretch of beach in the Machangulo Peninsula. A net potential rate of longitudinal sediment transport (of the order of 105 m3/year, along an extension of the coast of 21 km) was directed northwards, and was consistent with the frequent wave directions.

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