Influence of storm sequencing on breaker bar and shoreline evolution in large-scale experiments
| العنوان: | Influence of storm sequencing on breaker bar and shoreline evolution in large-scale experiments |
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| المؤلفون: | José M. Alsina, Tom E. Baldock, Iván Cáceres, Sonja Eichentopf, Joep van der Zanden |
| المساهمون: | Marine and Fluvial Systems, Universitat Politècnica de Catalunya. Laboratori d'Enginyeria Marítima, Universitat Politècnica de Catalunya. LIM/UPC - Laboratori d'Enginyeria Marítima |
| المصدر: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Coastal engineering, 157:103659. Elsevier |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Beach equilibrium, Environmental Engineering, 010504 meteorology & atmospheric sciences, Beach evolution, Bar (music), Storm sequencing, UT-Hybrid-D, Ocean Engineering, Oceanography, 01 natural sciences, 0905 Civil Engineering, Reflective beach, Coastal sediments, 14. Life underwater, 0405 Oceanography, Geomorphology, 0105 earth and related environmental sciences, Wave power, Shore, geography, geography.geographical_feature_category, Large-scale experiments, 010505 oceanography, 22/2 OA procedure, Storm, Sediment transport, Coastal erosion, Beach recovery, Sediments marins -- Transport, 0403 Geology, 13. Climate action, Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes [Àrees temàtiques de la UPC], Erosion, Geology |
| الوصف: | New large-scale experiments on the influence of storm sequencing on beach profile evolution are presented. The experiments comprised three sequences that commenced from the same initial beach profile. Each sequence consisted of two storms of different energy, with each storm followed by a recovery phase. A specific focus of the experiments was the influence of storm chronology as well as the influence of the recovery wave energy and duration on beach evolution. The breaker bar and the shoreline are studied as indicators for the beach response. Both evolve towards an equilibrium location for each wave condition where the breaker bar reaches its equilibrium much faster than the shoreline. Overall, no enhanced beach erosion due to storm sequencing is observed. Despite a similar cumulative wave power of the three sequences, the final beach configuration of each sequence seems to be determined by the last wave condition instead of previous storms. However, storm sequencing is important when the beach profile has not yet fully recovered before being disrupted by the subsequent storm. In this case, the second storm does not necessarily cause further erosion but can result in onshore sediment transport and hence, form part of the recovery. The bulk onshore sediment transport as well as the shoreline recovery rate vary depending on the wave condition and the profile disequilibrium and show a maximum value for a recovery condition with an intermediate wave energy. The very low energy condition that was performed for a long duration (24 hours) generated a near-stationary beach profile with typical features of a reflective beach. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0378-3839 |
| DOI: | 10.1016/j.coastaleng.2020.103659 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e098197a5a84308928a6364a521445a |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....1e098197a5a84308928a6364a521445a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 03783839 |
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| DOI: | 10.1016/j.coastaleng.2020.103659 |