Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, France
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 gl...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-09-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/9/9/1009 |
| _version_ | 1797518613153841152 |
|---|---|
| author | Pushpa Dissanayake Marissa L. Yates Serge Suanez France Floc’h Knut Krämer |
| author_facet | Pushpa Dissanayake Marissa L. Yates Serge Suanez France Floc’h Knut Krämer |
| author_sort | Pushpa Dissanayake |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T07:32:12Z |
| format | Article |
| id | doaj.art-b2d9b0261ac3484aab0bcc27447ae4c9 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T07:32:12Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-b2d9b0261ac3484aab0bcc27447ae4c92023-11-22T13:46:43ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-09-0199100910.3390/jmse9091009Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, FrancePushpa Dissanayake0Marissa L. Yates1Serge Suanez2France Floc’h3Knut Krämer4Coastal Geology and Sedimentology, Institute of Geosciences, 24118 Kiel, GermanySaint-Venant Hydraulics Laboratory, University Paris-Est and Cerema, 49-78401 Chatou, FranceUniversité de Bretagne Occidentale, CNRS, LETG UMR 6554, Institut Universitaire Européen de la Mer, 29280 Plouzané, FranceUniversité de Bretagne Occidentale, CNRS, LGO UMR 6538, Institut Universitaire Européen de la Mer, 29280 Plouzané, FranceCoastal Geology and Sedimentology, Institute of Geosciences, 24118 Kiel, GermanyWave 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.https://www.mdpi.com/2077-1312/9/9/1009wave impactssea level risemacro-tidal coastDelft3DSWANnumerical modelling |
| spellingShingle | Pushpa Dissanayake Marissa L. Yates Serge Suanez France Floc’h Knut Krämer Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, France Journal of Marine Science and Engineering wave impacts sea level rise macro-tidal coast Delft3D SWAN numerical modelling |
| title | Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, France |
| title_full | Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, France |
| title_fullStr | Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, France |
| title_full_unstemmed | Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, France |
| title_short | Climate Change Impacts on Coastal Wave Dynamics at Vougot Beach, France |
| title_sort | climate change impacts on coastal wave dynamics at vougot beach france |
| topic | wave impacts sea level rise macro-tidal coast Delft3D SWAN numerical modelling |
| url | https://www.mdpi.com/2077-1312/9/9/1009 |
| work_keys_str_mv | AT pushpadissanayake climatechangeimpactsoncoastalwavedynamicsatvougotbeachfrance AT marissalyates climatechangeimpactsoncoastalwavedynamicsatvougotbeachfrance AT sergesuanez climatechangeimpactsoncoastalwavedynamicsatvougotbeachfrance AT francefloch climatechangeimpactsoncoastalwavedynamicsatvougotbeachfrance AT knutkramer climatechangeimpactsoncoastalwavedynamicsatvougotbeachfrance |