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Soft postglacial cliffs in Poland under climate change 气候变化下的波兰冰川后软质悬崖
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-04-01 DOI: 10.1016/j.oceano.2024.01.003
Grzegorz Różyński, Grzegorz Cerkowniak
{"title":"Soft postglacial cliffs in Poland under climate change","authors":"Grzegorz Różyński,&nbsp;Grzegorz Cerkowniak","doi":"10.1016/j.oceano.2024.01.003","DOIUrl":"10.1016/j.oceano.2024.01.003","url":null,"abstract":"<div><p>The paper presents the results of the simulations of soft cliff erosion in Poland under future sea level rise. Two locations were investigated: one situated on the Wolin island, and the second near the town of Ustka. The cliffs will be suffering enhanced erosion for a number of reasons. First, the adopted sea level rise of 0.7 m results in a direct attack on cliff foot, leading to enhanced erosion with rates being roughly twice as high as that occurring without the rise. A high rate of erosion can persist because the cliff cannot reconfigure itself by moving landward and will permanently remain exposed to wave attack even under milder regimes. Second, the wave climates in the Baltic Sea release most energy in close shoreline proximity. Third, longer storm event durations can lead to ‘erosion saturation’, but this result requires further investigations, which will include alongshore effects induced by local bathymetry and longshore currents, ignored in 1-D simulations. Finally, the granulometry was found less important; finer grains offer less resistance to depletion, leading to greater erosion. The results demonstrate the need for vast follow-up research: (1) detailed mapping of the bathymetry near cliffs in order to properly reproduce alongshore redistribution of sediment during storms and achieve better estimates of cliff erosion, (2) detailed mapping of cliff lithology in order to properly reproduce their sediment composition and thus achieve better estimates of built-in susceptibility to erosion, (3) preparation of 2-D modeling suites for improved assessment of the rates of erosion of cliffs subjected to sea level rise.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0078323424000046/pdfft?md5=e51c46abac576b895a78e6b7c35466f7&pid=1-s2.0-S0078323424000046-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139759430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of wind and waves on ambient noise and bubble entrainment depth in the semi-enclosed Baltic Sea 风浪对半封闭波罗的海环境噪声和气泡夹带深度的影响
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-04-01 DOI: 10.1016/j.oceano.2023.12.003
Agata Dragan-Górska , Natalia Gorska , Piotr Markuszewski , Zygmunt Klusek
{"title":"Influence of wind and waves on ambient noise and bubble entrainment depth in the semi-enclosed Baltic Sea","authors":"Agata Dragan-Górska ,&nbsp;Natalia Gorska ,&nbsp;Piotr Markuszewski ,&nbsp;Zygmunt Klusek","doi":"10.1016/j.oceano.2023.12.003","DOIUrl":"10.1016/j.oceano.2023.12.003","url":null,"abstract":"<div><p>Semi-enclosed, fetch-limited waters create unique conditions for wind wave development and breaking. Parameters of breaking waves influence bubble entrainment depth and associated noise, which is why they differ in semi-enclosed sea compared to open waters. While the established noise-wind speed relationship holds in oceanic conditions, it differs in land-constrained basins like the Baltic Sea. To explore noise level, bubble entrainment depth and wind speed relationships, we conducted noise and sub-surface bubble measurements, coupled with wind observations, in the selected area of the Baltic Sea during two consecutive summers. A novel method was employed to estimate bubble entrainment depth under conditions of strong backscatter. Model data of wave field parameters were employed to assess their influence on noise level and bubble entrainment depth. Results suggest stronger connections between noise level and wind speed, as well as wave height, compared to wave age and wind sea steepness. The same patterns hold true for the correlation between bubble entrainment depth and both wind speed and wave field parameters. The parameterized noise level-wind speed relationship differs from that obtained for oceanic conditions and also varies across measurement periods. Observed differences were shaped by varying wind-wave conditions, notably differences in wind speed, direction, wave height, and the presence of swell. The noise level-bubble entrainment depth relation is reported for the first time for Baltic Sea conditions. For a thorough analysis of the influence of these factors on noise and bubbles, longer measurements under diverse wind-wave conditions are required to account for site-specific wave field characteristics.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0078323423000921/pdfft?md5=a3169e1ff76b8c04a6f1b08a12e96836&pid=1-s2.0-S0078323423000921-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139072385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fluctuations of ice in a lake due to the impact of the North Atlantic Oscillation (1960/61–2009/10) – a case study of Łebsko Lake 北大西洋涛动(1960/61-2009/10)影响下的湖冰波动 - Łebsko 湖案例研究
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-04-01 DOI: 10.1016/j.oceano.2023.10.004
Artur Młodzik, Roman Cieśliński, Izabela Chlost
{"title":"Fluctuations of ice in a lake due to the impact of the North Atlantic Oscillation (1960/61–2009/10) – a case study of Łebsko Lake","authors":"Artur Młodzik,&nbsp;Roman Cieśliński,&nbsp;Izabela Chlost","doi":"10.1016/j.oceano.2023.10.004","DOIUrl":"10.1016/j.oceano.2023.10.004","url":null,"abstract":"<div><p>The paper represents an attempt to understand the impacts produced by the North Atlantic Oscillation on the ice cover regime of the largest coastal lake in Poland situated in the northern part of the country. The purpose of the study was to estimate the impact of the North Atlantic Oscillation on selected ice cover parameters. The study also attempts to examine other factors that may affect its significant impact on observed changes in the climate. Water temperature data are used to assess temperature conditions in aqueous ecosystems as well as determine the heat absorption capacity of these systems. This allows one to then determine cooling rates in the event of ice cover formation. The data analysis provided in the paper focuses on selected characteristics of ice cover conditions (i.e. dependent variables) including the number of days with ice and maximum ice thickness in relation to NAO index changes (i.e. independent variables) for the reference period 1960/61–2009/10. In addition, the paper divides the studied period into 10-year subperiods in order to capture the weakest and strongest phases of NAO and assess the extent to which they affect the duration of ice cover. A large increase in the mean air temperature (1.8<sup>°</sup>C) occurred in the years 1960–2010. Trendline analysis indicates that the number of days with ice cover declined by about 60 days and the maximum thickness of ice cover decreased by about 10 cm. Oceanographic research employs satellite image data in order to accurately assess human impact. Therefore, ice cover forecasts generated for consecutive winter seasons may become an important tool in this type of assessment.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0078323423000830/pdfft?md5=5db4a586957da74a238d4e1835ef9c49&pid=1-s2.0-S0078323423000830-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135715314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Variability of chlorophyll a concentration in surface waters of the open Baltic Sea 波罗的海开阔海域表层水域叶绿素 a 浓度的变化情况
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-04-01 DOI: 10.1016/j.oceano.2024.02.003
Malgorzata Stramska, Jaromir Jakacki
{"title":"Variability of chlorophyll a concentration in surface waters of the open Baltic Sea","authors":"Malgorzata Stramska,&nbsp;Jaromir Jakacki","doi":"10.1016/j.oceano.2024.02.003","DOIUrl":"10.1016/j.oceano.2024.02.003","url":null,"abstract":"<div><p>In situ, satellite and reanalysis data from numerical models were used to study the characteristic features of Chl variability in the Baltic Sea. The analysis is focused on the years 2003–2020 when regular observations of ocean color with the MODIS AQUA are available. In the Baltic Sea, there is a pronounced annual cycle in physical conditions in the water column, driven by seasonal cycles in atmospheric forcing. The seasonal cycle of Chl concentration does not conform to the picture known from classical models, with low phytoplankton concentration when nutrients are low. In contrast, in the Baltic Sea, the concentration of Chl is high even during the summer months when nutrients are depleted. This can be explained by a continuous supply of nutrients by runoff from land, as well as by a significant contribution to primary production by phytoplankton able to survive in environment poor in dissolved nutrients. There is also a considerable interannual variability in Chl. There are many possible cause/effect interactions involved, but the data series are still too short to make clear which of them are the most important. The most striking event was a spring bloom in 2008.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0078323424000162/pdfft?md5=ee8d5ef8fce66f26cac31c170f55e1a9&pid=1-s2.0-S0078323424000162-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140167262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Knowledge Transfer Platform FindFISH – Numerical Forecasting System for the Marine Environment of the Gulf of Gdańsk for Fisheries 知识转让平台 FindFISH - 格但斯克湾渔业海洋环境数值预报系统
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-04-01 DOI: 10.1016/j.oceano.2024.01.004
Lidia Dzierzbicka-Głowacka , Maciej Janecki , Dawid Dybowski , Artur Nowicki , Agata Zaborska , Piotr Pieckiel , Michał Wójcik , Tomasz Kuczyński , Jacek Wittbrodt
{"title":"Knowledge Transfer Platform FindFISH – Numerical Forecasting System for the Marine Environment of the Gulf of Gdańsk for Fisheries","authors":"Lidia Dzierzbicka-Głowacka ,&nbsp;Maciej Janecki ,&nbsp;Dawid Dybowski ,&nbsp;Artur Nowicki ,&nbsp;Agata Zaborska ,&nbsp;Piotr Pieckiel ,&nbsp;Michał Wójcik ,&nbsp;Tomasz Kuczyński ,&nbsp;Jacek Wittbrodt","doi":"10.1016/j.oceano.2024.01.004","DOIUrl":"10.1016/j.oceano.2024.01.004","url":null,"abstract":"<div><p>Fast access to expert knowledge is very valuable, especially in the context of decision-making. Fishermen can use this knowledge to diagnose hydrological and hydrochemical conditions in which fish stocks should be the most abundant. In response to this need, a digital service has been developed. It is a service created within the FindFISH project, which provides the results of all developed models: hydrodynamic, biochemical, and <em>Fish</em> – for selected commercially caught fish species (herring, sprats, cod, and flounder). Our research revealed that the FindFISH service can enhance fishing efficiency and quality by approximately 40%, significantly increasing expected profits. In practical applications, we observed a 50% to 70% concordance between the fishing grounds recorded by fishermen and those identified by the FindFISH Platform. The website runs dynamically in operational mode, allowing visualization of forecasts in the form of maps, time series, spatial data, and tables.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0078323424000058/pdfft?md5=d7bde2b8677dbee4dab9ad5c90e91011&pid=1-s2.0-S0078323424000058-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139921201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rapid coastal erosion, its dynamics and cause – an erosional hot spot on the southern Baltic Sea coast 快速海岸侵蚀及其动态和原因--波罗的海南部海岸的侵蚀热点
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-04-01 DOI: 10.1016/j.oceano.2023.12.002
Grzegorz Uścinowicz , Szymon Uścinowicz , Tomasz Szarafin , Elżbieta Maszloch , Kamila Wirkus
{"title":"Rapid coastal erosion, its dynamics and cause – an erosional hot spot on the southern Baltic Sea coast","authors":"Grzegorz Uścinowicz ,&nbsp;Szymon Uścinowicz ,&nbsp;Tomasz Szarafin ,&nbsp;Elżbieta Maszloch ,&nbsp;Kamila Wirkus","doi":"10.1016/j.oceano.2023.12.002","DOIUrl":"10.1016/j.oceano.2023.12.002","url":null,"abstract":"<div><p>Coastal erosion is one of the major problems in coastal management. To adapt to it, and prevent it where possible and needed, it is important to recognize the temporal and spatial scale of the phenomenon as well as its causes. This paper describes the rapid erosion rate along an approximately 2.25 km stretch of the southern Baltic coast. The erosion occurs within a nature reserve, which is not subject to direct anthropogenic impact. Historical maps and modern remote sensing were used to trace changes in the shoreline position from 1875 to the present, and detailed DTMs derived from airborne LiDAR were used to trace elevation changes of the beach and dunes over the past years. The weighted maximum annual erosion rate since 1875 averages 2.3 m. An increase in this annual erosion rate has been observed since the turn of the millennium. The maximum average erosion rate from 2001 to 2005 was 15 m/year. The erosion has caused serious changes in elevation within the inland part of the coastal zone, manifested by a reduction in the width of the beach and a decrease in the height of the beach and dunes.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S007832342300091X/pdfft?md5=3b9cdf0040335dcaa793be28d17c6c67&pid=1-s2.0-S007832342300091X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cooperation between the fishery sector and science: CTD probe measurements during fishing catches on the feeding grounds of herring (Culpea harengus) and sprat (Sprattus sprattus) in the south-eastern part of the Baltic Sea 渔业部门与科学界之间的合作:在波罗的海东南部鲱鱼(Culpea harengus)和鲱鱼(Sprattus sprattus)觅食地捕鱼期间进行 CTD 探针测量
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-04-01 DOI: 10.1016/j.oceano.2023.10.001
Piotr Pieckiel , Diana Dziaduch , Lidia Dzierzbicka-Głowacka , Marcin Kalarus
{"title":"Cooperation between the fishery sector and science: CTD probe measurements during fishing catches on the feeding grounds of herring (Culpea harengus) and sprat (Sprattus sprattus) in the south-eastern part of the Baltic Sea","authors":"Piotr Pieckiel ,&nbsp;Diana Dziaduch ,&nbsp;Lidia Dzierzbicka-Głowacka ,&nbsp;Marcin Kalarus","doi":"10.1016/j.oceano.2023.10.001","DOIUrl":"10.1016/j.oceano.2023.10.001","url":null,"abstract":"<div><p>282 CTD probe measurements were analysed for the parameters of temperature, salinity, depth and oxygen saturation of the water column. These measurements were taken during commercial pelagic fishing for herring (<em>Clupea harengus</em>) and sprat (<em>Sprattus sprattus</em>). These species are currently the main target of commercial fishing in the Baltic Sea. Research was carried out throughout the years 2018–2022 in the south-eastern Baltic Sea, mainly in the Gdańsk Deep, mostly during the daytime. The main factor that influenced both, fishing strategy and the increase in catch per unit effort throughout each year, was temperature. Regardless of the season, the most frequent temperature measured was around 5.8°C during fishing, and 5°C in the most abundant winter season. This is the value occurring within the boundaries of the formation of the thermocline and the hypolimnion layer in the Baltic Sea. The formed shoals of fish moved dynamically with this layer in the daytime and occurred throughout the year at various depths in a range of up to 65.7 m. A stronger reaction to temperature changes was also observed for sprat, which is the most exploited fish in the Baltic Sea. This species was observed to be more numerous in the deeper layers of the water column and at lower temperatures than herring. In the winter, shoals of fish were observed at the level of the halocline, which may be strongly related to the presence of a preferred optimal food base in this season.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0078323423000829/pdfft?md5=cd990c865c71836ba9f9172f565efc42&pid=1-s2.0-S0078323423000829-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136010205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Apparent return of free-living Fucus vesiculosus to the Polish Baltic waters 自由生活的 Fucus vesiculosus 明显回归波兰波罗的海水域
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-04-01 DOI: 10.1016/j.oceano.2024.02.004
Piotr Balazy, Józef Wiktor, Agnieszka Tatarek, Jan Marcin Węsławski
{"title":"Apparent return of free-living Fucus vesiculosus to the Polish Baltic waters","authors":"Piotr Balazy,&nbsp;Józef Wiktor,&nbsp;Agnieszka Tatarek,&nbsp;Jan Marcin Węsławski","doi":"10.1016/j.oceano.2024.02.004","DOIUrl":"10.1016/j.oceano.2024.02.004","url":null,"abstract":"<div><p>The underwater meadows of the Puck Bay, once thriving with eelgrass <em>Zostera marina</em>, bladderwrack <em>Fucus vesiculosus</em> and black carrageen <em>Furcellaria lumbricalis</em>, experienced a decline in water quality during the 1960s and 1970s due to untreated sewage pollution. This, together with commercial exploitation, led to the disappearance of bladderwrack in 1977, with unsuccessful attempts at reintroduction in the early 2000s. In December 2023, a SCUBA survey near Rzucewo revealed a numerous bladderwrack in a benthic free-living form after 46 years of absence. The algae were found between 1.7 and 2.7 m depth, loosely positioned on the seabed, often within <em>Z. marina</em> beds, and with blue mussels <em>Mytilus edulis</em> attached. This reappearance suggests a positive trend in seawater quality and overall state of the Puck Bay, especially when combined with recent recovery of other algae species. The apparent return of bladderwrack could enhance ecosystem functionality, benefiting fish recruitment, grazer and algal biomass. Further investigations on bladderwrack's reappearance are needed in order to verify whether this is the only ecotype currently present in the Puck Bay.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0078323424000150/pdfft?md5=b1118a01e9faf8374a221ca18c9577e1&pid=1-s2.0-S0078323424000150-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140275969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatiotemporal variability of wave climate in the Gulf of Riga 里加湾波浪气候的时空变异
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-01-01 DOI: 10.1016/j.oceano.2023.11.001
Fatemeh Najafzadeh , Mikolaj Z. Jankowski , Andrea Giudici , Rain Männikus , Ülo Suursaar , Maija Viška , Tarmo Soomere
{"title":"Spatiotemporal variability of wave climate in the Gulf of Riga","authors":"Fatemeh Najafzadeh ,&nbsp;Mikolaj Z. Jankowski ,&nbsp;Andrea Giudici ,&nbsp;Rain Männikus ,&nbsp;Ülo Suursaar ,&nbsp;Maija Viška ,&nbsp;Tarmo Soomere","doi":"10.1016/j.oceano.2023.11.001","DOIUrl":"10.1016/j.oceano.2023.11.001","url":null,"abstract":"<div><p>Basic properties of wind wave climate in the Gulf of Riga, the Baltic Sea, are evaluated based on modelled wave fields, instrumentally measured and historical visually observed wave properties. Third-generation spectral wave model SWAN is applied to the entire Baltic Sea for 1990–2021 with a spatial resolution of 3 nautical miles (nmi, about 5.5 km) forced by the wind field of ERA5, to the Gulf of Riga and its entrance area with a resolution of 1 nmi (about 1.85 km), and to nearshore areas of this gulf with a resolution of 0.32 nmi (about 600 m). The calculations are performed for an idealised ice-free climate. Wave properties are represented by 36 directional and 32 frequency bins. The simulations are complemented by five sessions of instrumental measurements in the 2000s and two sets of historical visual wave observations from the island of Ruhnu and the Sõrve Peninsula for 1954–2011. Predominantly representing fetch-limited windseas, the wave climate in the gulf is milder and more intermittent than in the open Baltic Sea. The average significant wave height is mostly in the range of 0.6–0.8 m and peaks at 0.82 m inside the gulf. Typical wave periods are shorter than in the Baltic proper. The spatial pattern of wave heights, with higher wave intensity in the northern and eastern parts of the basin, follows anisotropy in wind conditions. Interannual variations are highly synchronised in different parts of the gulf. Their magnitude is less than 10% of the long-term average wave height. No long-term trend has been found in significant wave height and no distinct decadal variation exists inside the gulf.</p></div>","PeriodicalId":54694,"journal":{"name":"Oceanologia","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0078323423000866/pdfft?md5=ed3df92f5affefc4cb6037f6d4eef2c0&pid=1-s2.0-S0078323423000866-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138532043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The BALTEX/Baltic Earth program: Excursions and returns BALTEX/波罗的海地球计划:游览和返回
IF 2.9 3区 地球科学
Oceanologia Pub Date : 2024-01-01 DOI: 10.1016/j.oceano.2023.06.001
Anders Omstedt , Hans von Storch
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