Influence of Wave Climate on Intra and Inter-Annual Nearshore Bar Dynamics for a Sandy Beach
| العنوان: | Influence of Wave Climate on Intra and Inter-Annual Nearshore Bar Dynamics for a Sandy Beach |
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| المؤلفون: | Nikolay Valchev, Petya Eftimova, Sergey V. Kuznetsov, Yana Saprykina, Nataliya Andreeva |
| المصدر: | Geosciences, Vol 11, Iss 206, p 206 (2021) Geosciences Volume 11 Issue 5 |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 010504 meteorology & atmospheric sciences, field data, Forcing (mathematics), 010502 geochemistry & geophysics, Atmospheric sciences, 01 natural sciences, Physics::Geophysics, Wave height, storms, wave climate, wave conditions, Physics::Atmospheric and Oceanic Physics, cross-shore bar migration, 0105 earth and related environmental sciences, QE1-996.5, geography, geography.geographical_feature_category, Oscillation, Shoal, Geology, Storm, Wave climate, nearshore bars, Black Sea, North Atlantic oscillation, wave non-linearity, General Earth and Planetary Sciences, teleconnection patterns, Bar (unit) |
| الوصف: | The study investigates cross-shore outer sand bar dynamics in an open-coast non-tidal beach at the Bulgarian Black Sea due to wave climate. On seasonal to short-term (1–2 years) time scale, monthly field measurements of the outer bar profiles were related to respective modeled nearshore wave data. Hereby, seaward-shoreward bar migration was examined depending on the wave forcing, wave non-linearity, wave transformation scenarios, storms and direction of wave incidence. Analysis revealed that intra-annually highly non-linear waves were responsible for outer bar displacement, while the direction of migration depended on wave period, duration of conditions with wave steepness > 0.04, angle of approach and total duration of storms. Short-term bar evolution was mainly governed by wave height and storms’ parameters as the angle of approach and duration. The correlation between the outer bar location and wave height annual variations initiated the first for the explored Black Sea region examination of possible connection between wave height’s temporal fluctuations and the variability of climatic indices the North Atlantic Oscillation (NAO), the Atlantic Multi-decadal Oscillation (AMO), the East Atlantic Oscillation (EA), the Arctic Oscillation (AO), the East Atlantic-Western Russia (EA/WR)and the Scandinavian (SCAND) patterns. According to the results the inter-annual outer bar location may vary depending on periods of maximum annual wave fluctuations, which in turn predominantly depend on indices the EA (4–5, 10–11, 20–30 years), the EA/WR (2–4, 9–13 years) and the NAO (15 years). |
| وصف الملف: | application/pdf |
| تدمد: | 2076-3263 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93383b80741793a0942ae6df90a848ba https://doi.org/10.3390/geosciences11050206 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....93383b80741793a0942ae6df90a848ba |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20763263 |
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