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Continuing long-term expansion of low-oxygen conditions in the Eastern Gulf of Finland Oceanologia (IF 2.9) Pub Date : 2024-03-02 Stella-Theresa Stoicescu, Laura Hoikkala, Vivi Fleming, Urmas Lips
To develop an oxygen indicator for the eastern part of the Gulf of Finland (EGOF), a dataset covering 1900–2021 was compiled. The analysis revealed a long-term declining trend in dissolved oxygen concentrations in the EGOF deep layer of 0.022 mg L a and multi-decadal variations associated with the observed changes in hydrographic conditions. About 27% of the decline in oxygen concentrations for 1900–2021
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Knowledge Transfer Platform FindFISH – Numerical Forecasting System for the Marine Environment of the Gulf of Gdańsk for Fisheries Oceanologia (IF 2.9) Pub Date : 2024-02-19 Lidia Dzierzbicka-Głowacka, Maciej Janecki, Dawid Dybowski, Artur Nowicki, Agata Zaborska, Piotr Pieckiel, Michał Wójcik, Tomasz Kuczyński, Jacek Wittbrodt
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Soft postglacial cliffs in Poland under climate change Oceanologia (IF 2.9) Pub Date : 2024-02-03 Grzegorz Różyński, Grzegorz Cerkowniak
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
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The use of Argo floats as virtual moorings for monitoring the South Baltic Sea Oceanologia (IF 2.9) Pub Date : 2024-02-02 Małgorzata Merchel, Waldemar Walczowski, Daniel Rak, Piotr Wieczorek
The Argo float measurement network is increasingly effectively covering internal seas and shelf areas. In this paper, a specific approach to using Argo floats as ‘virtual moorings’ within the conditions of the Baltic Sea is presented. Following a series of successful deployments with standard configurations, it was decided that the settings forcing the float to stay at the bottom between profiles should
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Submarine groundwater discharge into a semi-enclosed coastal bay of the southern Baltic Sea: A multi-method approach Oceanologia (IF 2.9) Pub Date : 2024-02-02 Cátia Milene Ehlert von Ahn, Olaf Dellwig, Beata Szymczycha, Lech Kotwicki, Jurjen Rooze, Rudolf Endler, Peter Escher, Iris Schmiedinger, Jürgen Sültenfuß, Magdalena Diak, Matthias Gehre, Ulrich Struck, Susan Vogler, Michael Ernst Böttcher
The present study aims to understand the impact of submarine groundwater discharge (SGD) on a coastal area with different lithology and degrees of SGD. Sampling campaigns took place in Puck Bay and the Gulf of Gdańsk, southern Baltic Sea encompassing years between 2009 and 2021. The methodological approach combined geophysical characterization of the surface sediments with detailed spatial and temporal
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Evaluating and enhancing the performance of the K-Means clustering algorithm for annual coastal bed evolution applications Oceanologia (IF 2.9) Pub Date : 2024-01-06 Andreas Papadimitriou, Vasiliki Tsoukala
The prediction of the coastal bed evolution at an annual scale utilizing process-based models is usually a complex task requiring significant computational resources. To compensate for this, accelerating techniques aiming at reducing the amount of input parameters are often employed. In the framework of this research, a comprehensive evaluation of the capacity of the widely-used K-Means clustering
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Coverage estimation of benthic habitat features by semantic segmentation of underwater imagery from South-eastern Baltic reefs using deep learning models Oceanologia (IF 2.9) Pub Date : 2024-01-04 Andrius Šiaulys, Evaldas Vaičiukynas, Saulė Medelytė, Kazimieras Buškus
Underwater imagery (UI) is an important and sometimes the only tool for mapping hard-bottom habitats. With the development of new camera systems, from hand-held or simple “drop-down” cameras to ROV/AUV-mounted video systems, video data collection has increased considerably. However, the processing and analysing of vast amounts of imagery can become very labour-intensive, thus making it ineffective
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Influence of wind and waves on ambient noise and bubble entrainment depth in the semi-enclosed Baltic Sea Oceanologia (IF 2.9) Pub Date : 2023-12-30 Agata Dragan-Górska, Natalia Gorska, Piotr Markuszewski, Zygmunt Klusek
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
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Rapid coastal erosion, its dynamics and cause – an erosional hot spot on the southern Baltic Sea coast Oceanologia (IF 2.9) Pub Date : 2023-12-26 Grzegorz Uścinowicz, Szymon Uścinowicz, Tomasz Szarafin, Elżbieta Maszloch, Kamila Wirkus
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
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Characterization of suspended particles at different glacial bays at Spitsbergen Oceanologia (IF 2.9) Pub Date : 2023-12-14 Katarzyna Dragańska-Deja
Particle size distribution (PSD) and concentration of mineral-suspended sediment released from melting glaciers are important factors affecting the local marine ecosystem, e.g. affecting the light availability in water columns, thus changing underwater light climate for photosynthetic organisms. We examined the characteristics of various samples of natural mineral assemblages suspended in different
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Changes in cloudiness contribute to changing seasonality in the Baltic Sea region Oceanologia (IF 2.9) Pub Date : 2023-12-08 Piia Post, Margit Aun
In the Baltic Sea region, a significant increase in solar radiation has been detected during the past half-century. Changes in shortwave irradiance are associated with atmospheric transparency and cloudiness parameters like cloud fraction and albedo. One of the most important reasons for day-to-day changes in cloudiness is the synoptic-scale atmospheric circulation; thus, we look for reasons for solar
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Low abundance and high patchiness of decapod fauna sampled with van Veen grab on the West African continental margin (Gulf of Guinea, Ghana) Oceanologia (IF 2.9) Pub Date : 2023-12-04 Krzysztof Podwysocki, Krzysztof Pabis, Ferran Palero, Magdalena Błażewicz, Bjorn Serigstadt
Sixty morphospecies of Decapoda (Malacostraca: Crustacea) representing 35 families were recorded in the material collected in 2012 from 265 van Veen grab (0.1m2) samples, from nine transects distributed along the coast of Ghana in the 25–1000 m depth range. The examined material was dominated by the Calcinidae, Panopeidae, Leucosiidae, Pilumnidae and Xanthidae families. Species accumulation curves
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Submesoscale processes in the surface layer of the central Baltic Sea: A high-resolution modelling study Oceanologia (IF 2.9) Pub Date : 2023-11-30 Germo Väli, H.E. Markus Meier, Taavi Liblik, Hagen Radtke, Knut Klingbeil, Ulf Gräwe, Urmas Lips
A high-resolution model with a horizontal resolution of 250 m was used to analyze the surface eddy fields and the distribution of kinetic energy in the Baltic Sea. The results indicate a close relationship between the wind speed and the kinetic energy at the surface and the vertically averaged kinetic energy in the sea and a lagged correlation between the kinetic energy at the surface and the eddy
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Spatiotemporal variability of wave climate in the Gulf of Riga Oceanologia (IF 2.9) Pub Date : 2023-11-24 Fatemeh Najafzadeh, Mikolaj Zbigniew Jankowski, Andrea Giudici, Rain Männikus, Ülo Suursaar, Maija Viška, Tarmo Soomere
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
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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 Oceanologia (IF 2.9) Pub Date : 2023-11-13 Artur Młodzik, Roman Cieśliński, Izabela Chlost
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
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Long-term statistics of atmospheric conditions over the Baltic Sea and meteorological features related to wind wave extremes in the Gulf of Gdańsk Oceanologia (IF 2.9) Pub Date : 2023-11-07 Witold Cieślikiewicz, Aleksandra Cupiał
The goal of this study is to describe wind wave climate and wave extremes of the Gulf of Gdańsk in the southern Baltic Sea and associated meteorological conditions over the Baltic Sea. We obtain the characteristic features of 34 severe historical storms in the Gulf of Gdańsk during the period 1958–2001 and link them with extreme significant wave heights hindcast for five grid points in this gulf. The
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Seasonal enhancement of phytoplankton biomass in the southern tropical Indian Ocean: Significance of meteorological and oceanography parameters Oceanologia (IF 2.9) Pub Date : 2023-10-31 Chinnadurai Karnan, Sreedharan Gautham
The present study focused on understanding the seasonality of the phytoplankton biomass (chlorophyll a) distribution in the oligotrophic, Equatorial, and Southern Tropical Indian Ocean (ESTIO; 0–30°S and 60–90°E). The long-term satellite data analyses (2003–2020) showed a strong seasonality in sea surface temperature (SST), wind, currents, mean sea level anomaly (MSLA), photosynthetically available
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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 Oceanologia (IF 2.9) Pub Date : 2023-10-21 Pieckiel Piotr, Diana Dziaduch, Dzierzbicka-Głowacka Lidia, Kalarus Marcin
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 (Clupea harengus) and sprat (Sprattus sprattus). These species are currently the main target of commercial fishing in the Baltic Sea. Research was carried out throughout the years 2018-2022
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Seawater temperature changes in the southern Baltic Sea (1959–2019) forced by climate change Oceanologia (IF 2.9) Pub Date : 2023-09-19 Tamara Zalewska, Bartłomiej Wilman, Bożena Łapeta, Michał Marosz, Dawid Biernacik, Agnieszka Wochna, Michał Saniewski, Agnieszka Grajewska, Michał Iwaniak
The study included the analysis of changes in sea surface and water column temperature and air temperature in the years 1959–2019 in the southern Baltic Sea based on in situ measurement (CTD probe), satellite data, and model data (ERA5). SST increased on average by 0.6°C per decade. Analyses at different depths showed that the highest temperature increase per decade at 0.60–0.65°C characterised the
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Compound drought and heatwave events in the eastern part of the Baltic Sea region Oceanologia (IF 2.9) Pub Date : 2023-07-11
Droughts and heatwaves are natural phenomena that can cause severe damage to the economy, infrastructure, human health, and agriculture, among others. However, in recent years, it has been noted that their combined effect, known as compound drought and heatwave events (CDHE), often results in even greater harm. The main aim of this study was to identify CDHEs in this region during summers from 1950
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First survey of metallic distribution in zooplankton from a south Moroccan area Oceanologia (IF 2.9) Pub Date : 2023-07-11 Fatima Zohra Bouthir, Imane Afandi, Sophia Talba, Maylis Labonne, Hicham Masski, Mathieu Waeles, Raymond Lae
The Moroccan Southern Atlantic coast is mainly influenced by upwelling, Saharan dust and anthropogenic micropollutant input. These factors contribute to increasing the availability of metal elements in waters. To differentiate human impact from natural variability, knowledge of background concentrations of metals and their fluctuations in bioindicator organisms such as zooplankton is important. This
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Assessment of human interventions presence and their impact on shoreline changes along Nile delta, Egypt Oceanologia (IF 2.9) Pub Date : 2023-07-08 May R. ElKotby, Tharwat A. Sarhan, Mahmoud El-Gamal
Coastal erosion is a natural process, that contributed to shaping the Nile Delta shoreline in Egypt over history. The objective of this research is to investigate shoreline changes, accretion, and erosion and to detect particularly vulnerable locations that require immediate attention. Another goal is to assess the efficiency of coastal installations that have been recently implemented along the study
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Dinoflagellate cysts and benthic foraminifera from surface sediments of Svalbard fjords and shelves as paleoenvironmental indicators Oceanologia (IF 2.9) Pub Date : 2023-06-28 Maciej M. Telesiński, Vera Pospelova, Kenneth Neil Mertens, Małgorzata Kucharska, Marek Zajączkowski
Due to the Arctic amplification effect, the Svalbard archipelago is an important area for studying ongoing environmental changes. However, its marine ecosystem is extremely complex. In this study, we analyze modern assemblages of dinoflagellate cysts (dinocysts) and benthic foraminifera from surface sediment samples around Svalbard. We use multivariate statistical analyses to examine relationships
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Projections of wind climate and wave energy resources in Lithuanian territorial waters of the Baltic Sea in the 21st century Oceanologia (IF 2.9) Pub Date : 2023-06-24 Darius Jakimavičius, Vytautas Akstinas
Wave energy is still insufficiently explored and exploited as a future energy source. Climate change is an additional force that affects energy potential changes. Therefore, this study aims to evaluate the wave energy under climate change and to project it for the near (2025–2044) and far (2081–2100) future by applying the wave energy flux (WEF) approach and statistical relations between wind speeds
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Stripe segmentation of oceanic internal waves in SAR images based on Gabor transform and K-means clustering Oceanologia (IF 2.9) Pub Date : 2023-06-24 Kai-Tuo Qi, Hong-Sheng Zhang, Ying-Gang Zheng, Yu Zhang, Long-Yu Ding
Oceanic internal waves are an active ocean phenomenon that can be observed, and their relevant characteristics can be acquired using synthetic aperture radar (SAR). The locations of oceanic internal waves must be determined first to obtain the important parameters of oceanic internal waves from SAR images. An oceanic internal wave segmentation method with integrated light and dark stripes was described
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Excitation of an extreme wave by standing current Oceanologia (IF 2.9) Pub Date : 2023-06-23 Pavlo Anakhov
The statistics suggest that extreme waves cause more damage in shallow waters and at the coast than in the deep sea. In the linear theory of the formation of extreme waves, their existence is interpreted as a local superposition of surface monochromatic waves. The event of excitation of extreme waves can be understood as an increase in natural oscillations of the water basin. The conditions for the
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Environmental impact of water exchange blocking in a strait – a multidisciplinary study in the Baltic Sea Oceanologia (IF 2.9) Pub Date : 2023-06-22 Taavi Liblik, Fred Buschmann, Enriko Siht, Ivan Kuprijanov, Germo Väli, Maarja Lipp, Ants Erm, Jaan Laanemets, Redik Eschbaum, Aare Verliin, Lauri Saks, Ivar Zekker
In this study, we report the environmental impact of water exchange blocking by a 3 km road dam built in 1896 in the shallow Väike Strait, north-eastern Baltic Sea. Using a multidisciplinary measurement campaign and numerical simulations, we show ecological conditions in the strait have considerably altered; the previously free-flowing strait now comprises two bays with separate circulation systems
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The BALTEX/Baltic Earth program: Excursions and returns Oceanologia (IF 2.9) Pub Date : 2023-06-20 Anders Omstedt, Hans von Storch
The Baltic Sea Experiment (BALTEX) started in 1993 as part of the Global Energy and Water Cycle Experiment (GEWEX). It was later organized into three programs: BALTEX I, BALTEX II, and Baltic Earth. Here, we examine in a brief overview the overall BALTEX achievements, including program goals, risks encountered during the research journey, and knowledge development when finalizing the programs. During
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Modified logarithmic distribution of wind-driven flow velocity in remote foreshore of the non-tidal sea Oceanologia (IF 2.9) Pub Date : 2023-06-20 Rafał Ostrowski, Magdalena Stella-Bogusz
The paper presents the results of the novel modelling of the wind-driven current in the southern Baltic Sea. The steady current is accompanied by wave-induced orbital velocities. The bed boundary layer related to wave-induced oscillatory flow gives rise to the appearance of additional shear stresses affecting the wind-driven current. This impact included in the wind-driven current model yields a modified
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The influence of biochemical parameters on primary production in the Gulf of Gdańsk region: A model study Oceanologia (IF 2.9) Pub Date : 2023-06-07 Maciej Janecki, Dawid Dybowski, Lidia Dzierzbicka-Głowacka
Understanding the changing levels of biochemical parameters and the factors that influence them throughout the seasons is crucial for comprehending the dynamics of marine ecosystems. It also helps us identify potential threats that could harm their condition, aiding decision-making processes related to their protection. This study focuses on examining the variations in nutrients (such as nitrates,
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General characteristics of tidal currents in the entrance of Khor Abdullah, northwest of Arabian Gulf Oceanologia (IF 2.9) Pub Date : 2023-04-18 Ali Abdulridha Lafta
The general characteristics of tidal currents in the entrance of the Khor Abdullah at Iraq marine water, located at the northwest tip of the Arabian Gulf, were studied based on realistic current measurements. The velocity measurements used in this study extended to about one year, which was never previously available in this vital region of the Arabian Gulf. The results illustrated that this area is
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Remotely induced storm effects on the coastal flooding along the southwest coast of India Oceanologia (IF 2.9) Pub Date : 2023-04-18 P.S. Swathy Krishna, Valliyil Mohammed Aboobacker, Madipally Ramesh, L. Sheela Nair
The southwest coast of India is exposed to long-period swells propagated from the South Indian Ocean during pre- and post-monsoon seasons. Although swells from the Southern Ocean and Atlantic Ocean were identified in the North Indian Ocean, their existence and impact along the southwest coast of India were not well investigated. On 19 March 2019, the Valiyathura-Shangumukham coastal stretch along the
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Bed forms under the combined action of waves and wind-driven currents in the remote foreshore of the non-tidal sea Oceanologia (IF 2.9) Pub Date : 2023-04-18 Magdalena Stella-Bogusz
The paper presents a prediction of bed form parameters (length and height) in the remote foreshore of the non-tidal sea. The study site is located in the south Baltic region, near the Coastal Research Station (CRS) in Lubiatowo, Poland (ca. 1–2 Nm off the shoreline at depths of around 16–20 m). The study site is an area with hydrodynamics and lithodynamics typical of the south Baltic coast, built of
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Variations of temperature, salinity and oxygen of the Baltic Sea for the period 1950 to 2020 Oceanologia (IF 2.9) Pub Date : 2023-03-04 Vera Stockmayer, Andreas Lehmann
Variations of temperature, salinity and oxygen of the Baltic Sea on interannual to decadal timescales were studied for the period from 1950 to 2020. Both observational data and the output of a numerical circulation model of the Baltic Sea were analyzed. In addition, we investigated the influence of atmospheric parameters and river runoff on the observed hydrographic variations. Variability of sea surface
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Effects of Eulerian current, Stokes drift and wind while simulating surface drifter trajectories in the Baltic Sea Oceanologia (IF 2.9) Pub Date : 2023-02-16 Ove Pärn, Lina Davulienė, Diego Macias Moy, Kaimo Vahter, Adolf Stips, Tomas Torsvik
The simulation of Lagrangian drift is an important task in applications such as dispersion of pollutants, larvae and search and rescue activities. In this study, the Eulerian current, Stokes drift and wind effect on the simulation of observed drifters were analysed. The Lagrangian OceanParcels model was used, and the surface trajectories were assessed by comparison with 9 GPS drifter trajectories in
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A study of the seasonal and interannual variability of phytoplankton and zooplankton assemblages in a significant marine ecosystem Oceanologia (IF 2.9) Pub Date : 2023-01-06 Jochen Kämpf, Michelle Newman, Mark Doubell, Luciana Möller, Ryan Baring, Alex Shute, Ana Redondo Rodriguez
The eastern Great Australian Bight (GAB) is a significant marine ecosystem, featuring a range of marine mammals and large pelagic fish including blue whales, sharks and tuna. Previous research has classified the region as generally oligotrophic, apart from late austral summer months when seasonal upwelling triggers phytoplankton blooms in the region. Based on multi-year field observations, this study
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Earth system changes in marginal seas Oceanologia (IF 2.9) Pub Date : 2023-01-06 Marcus Reckermann, Jan Harff, H.E. Markus Meier, Karol Kuliński, Hans von Storch
Abstract not available
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Spatial distribution of arsenic in surface sediments of the southern Baltic Sea Oceanologia (IF 2.9) Pub Date : 2023-01-04 Marta Szubska, Jacek Bełdowski
Arsenic is a ubiquitous chemical element, occurring naturally worldwide. Yet due to its global cycle, its concentrations in the marine environment are manifold higher than the terrestrial background and may pose harm to biota. This is especially relevant for the Baltic Sea, which is very susceptible to any kind of pollution. Arsenic transported to the sea is adsorbed on iron oxides or precipitating
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Analysis of the impact of nutrients deposited from the land side on the waters of Puck Lagoon (Gdańsk Basin, Southern Baltic): A model study Oceanologia (IF 2.9) Pub Date : 2022-12-16 Dawid Dybowski, Lidia Dzierzbicka-Głowacka
The article analyzes the impact of nutrients (nitrates and phosphates) supplied from the land on the waters of the Puck Lagoon (Gdańsk Basin, southern Baltic). The study is based on the numerical modelling. The model data was verified by comparison with the in situ measurement data. The spatial and temporal variability of the concentrations of nitrate, phosphate, and chlorophyll a were analyzed. We
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Biogeochemistry-ecosystem-social interactions on the Chinese continental margins Oceanologia (IF 2.9) Pub Date : 2022-12-15 Su Mei Liu, Wen Liang, Xinyu Guo, Nian Wu, Wuchang Zhang, Xiujuan Shan, Hua-De Zhao, Juying Wang, Jin Huang
Chinese continental margins are experiencing remarkable environmental changes driven by anthropogenic activities and climate change. As an important habitat and sea-based fish farming resource in China, the Bohai was selected as a case study to understand how ecosystems and social interactions are influenced by multi-stressors. The Bohai ecosystem has been considerably modified. The Bohai coastline
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Extreme separations of bottle posts in the southern Baltic Sea – tentative interpretation of an experiment-of-opportunity Oceanologia (IF 2.9) Pub Date : 2022-12-14 Ulrich Callies, Hans von Storch
During an experiment-of-opportunity in July 2019, 27 drift bottles were released in the southern Baltic Sea. Ten of these bottles were found and reported at locations that were surprisingly widespread. In this study, we explore the chances to reproduce these findings with a numerical drift model. While trajectories may be considered as completely deterministic, in practice their prediction as well
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Seasonal variation in size structure and production of autotrophic plankton community in eutrophied, low-light environment: A focus on Mesodinium rubrum Oceanologia (IF 2.9) Pub Date : 2022-12-11 Atis Labucis, Astra Labuce, Iveta Jurgensone, Ieva Barda, Ingrida Andersone, Anda Ikauniece
Temporal variations in the primary production of the size-fractionated autotrophic plankton community were studied in coastal-estuarine waters of the eutrophic Gulf of Riga, Baltic Sea. The community was net-autotrophic during spring and summer and net-heterotrophic during autumn. The results of the present study clearly demonstrate strong covariation between net primary production (NPP) and <56 µm
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A Marine Spatial Data Infrastructure to manage multidisciplinary, inhomogeneous and fragmented geodata in a FAIR perspective ... the Adriatic Sea experience Oceanologia (IF 2.9) Pub Date : 2022-12-02 Federica Foglini, Valentina Grande
The Institute of Marine Sciences (ISMAR) and the Institute of Polar Sciences (ISP) of the Italian National Research Council (CNR) have gathered a substantial amount of heterogeneous geodata through the years in the Adriatic Sea, with different methodologies and for multiple scopes regarding geological, oceanographic, biological, anthropogenic aspects, and their interactions. To overcome challenges
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Latitudinal and archipelago effect on the composition, distribution, and abundance of zooplanktonic organisms in the Gulf of California Oceanologia (IF 2.9) Pub Date : 2022-11-25 Benjamín Quiroz-Martínez, David Alberto Salas-de-León, Antonio Gil-Zurita, María Adela Monreal-Gómez, Erik Coria-Monter, Elizabeth Durán-Campos
The upper Gulf of California is one of the most energetic regions owing to its tidal range and strong tidal currents, making the upper gulf and the archipelago zone highly turbulent regions; the abundance of zooplankton should be associated with mixing phenomena. We aimed to determine the latitudinal distribution of zooplanktonic organisms in this region and the influence of the islands on their distribution
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Above- and belowground habitat complexity created by emergent and submerged vegetation drives the structure of benthic assemblages Oceanologia (IF 2.9) Pub Date : 2022-10-31 Krzysztof Pawlikowski, Ryszard Kornijów
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Corrigendum to “Sea spray volume flux estimation using joint statistics of wind and waves” [Oceanologia 64(4)/(2022), 789–793] Oceanologia (IF 2.9) Pub Date : 2022-10-22 Dag Myrhaug, Bernt J. Leira, Gowtham Radhakrishnan, Håvard Holm
Abstract not available
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Relative sea-level changes induced by glacial isostatic adjustment and sediment loads in the Beibu Gulf, South China Sea Oceanologia (IF 2.9) Pub Date : 2022-09-22 Andreas Groh, Jan Harff
We modelled changes in relative sea level (RSL) in the Beibu Gulf region, South China Sea, caused by the melting of the Pleistocene ice sheets, i.e., glacial isostatic adjustment (GIA). Both the temporal evolution of RSL between the last glacial maximum and present day as well as present-day rates were derived. The interplay of changing ocean water volume, gravitational induced water redistribution
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Generation and Assessment of ARGO Sea Surface Temperature Climatology for the Indian Ocean Region Oceanologia (IF 2.9) Pub Date : 2022-09-11 Ravi Kumar Jha, T.V.S. Udaya Bhaskar
ARGO program was conceived with an aim to generate near real-time ocean observations as the primary in-situ sources for use in operational oceanography studies. Two decades-long ARGO near-surface temperature data set was used for generating monthly gridded ARGO sea surface temperature (ASST) product on a climatological scale. Data interpolating variational analysis (DIVA) method was employed for generating
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Characteristics of internal solitary waves in the Maluku Sea, Indonesia Oceanologia (IF 2.9) Pub Date : 2022-08-14 Adi Purwandana, Yannis Cuypers
The appearance of internal solitary waves (ISWs) in the Maluku Sea is often captured by satellite imagery. However, no study has revealed details on this phenomenon to date. Here, the characteristics of such ISWs were investigated based on their appearance in synthetic aperture radar (SAR) imagery on 20 February 2015. Two different sources of ISW packets were observed: one packet propagating from the
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Predicting sea surface salinity in a tidal estuary with machine learning Oceanologia (IF 2.9) Pub Date : 2022-08-10 Nicolas Guillou, Georges Chapalain, Sébastien Petton
As an indicator of exchanges between watersheds, rivers and coastal seas, salinity may provide valuable information about the exposure, ecological health and robustness of marine ecosystems, including especially estuaries. The temporal variations of salinity are traditionally approached with numerical models based on a physical description of hydrodynamic and hydrological processes. However, as these
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On the non-parametric changepoint detection of flow regimes in cyclone Amphan Oceanologia (IF 2.9) Pub Date : 2022-08-08 Venkat Shesu Reddem, Venkata Jampana, Ravichandran Muthalagu, Venkateswara Rao Bekkam, Pattabhi Rama Rao Eluri, Srinivasa Kumar Tummala
The Bay of Bengal was witness to a severe cyclone named Amphan during the summer of the year 2020. The National Institute of Ocean Technology (NIOT), INDIA moorings BD08 and BD09 happened to be in the vicinity of the cyclone. The highly instrumented mooring recorded near-surface meteorological parameters like wind speed, sea surface temperature, and near-surface pressure. This article explores the
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Sea spray volume flux estimation using joint statistics of wind and waves Oceanologia (IF 2.9) Pub Date : 2022-08-06 Dag Myrhaug, Bernt J. Leira, Gowtham Radhakrishnan, Håvard Holm
This article provides estimates of the sea spray volume flux using joint statistics of wind and waves. This is achieved by combining the sea spray volume flux parameterization proposed by Xu et al. (2021) with the joint statistics of wind and waves provided by Bitner-Gregersen (2015). Both the sea spray volume flux formula and the joint statistics of wind and waves represent conditions for wind waves
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Seasonal assessment of the trophic status in the coastal waters adjoining Tuticorin harbor in relation to water quality and plankton community in the Gulf of Mannar, India Oceanologia (IF 2.9) Pub Date : 2022-08-05 Rengasamy Subramaniyan Sathishkumar, Arumugam Sundaramanickam, Ajit Kumar Mohanty, Gouri Sahu, Thangavelu Ramesh, Kumar Balachandar, Ajith Nithin, Parthasarathy Surya, Krishnan Silambarasan
Seasonal variations in hydrography, trophic status, and plankton community structure were studied along the Tuticorin coastal waters (TCWs) in the Gulf of Mannar (GoM). Samples were collected in 2015 and 2016 to analyze physico-chemical (temperature, pH, salinity, suspended particulate matter (SPM), dissolved oxygen (DO), nutrients, etc.) and biological parameters (chlorophyll-a, phytoplankton, and
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Plastic contamination of sandy beaches along the southern Baltic – a one season field survey results Oceanologia (IF 2.9) Pub Date : 2022-08-05 Mikołaj Mazurkiewicz, Paula Sancho Martinez, Weronika Konwent, Kajetan Deja, Lech Kotwicki, Jan Marcin Węsławski
The subject of this study was microplastics (>32 µm), large micro-/macroplastics (>2 mm) and plastic litter (visible by naked eye) contamination on sandy beaches and in coastal waters along the Polish coast of the Baltic Sea. Microplastics were studied with particular attention, with simultaneous observations in the water and across the beach. Other data was intended to serve as a background and as
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Complementing ERA5 and E-OBS with high-resolution river discharge over Europe Oceanologia (IF 2.9) Pub Date : 2022-08-05 Stefan Hagemann, Tobias Stacke
The 0.5° resolution of many global observational or quasi-observational datasets is not sufficient for the evaluation of current state-of-the-art regional climate models or the forcing of ocean model simulations over Europe. While higher resolved products are available for meteorological data, e.g. ERA5 reanalysis and the E-OBS vs 22 (EOBS22) datasets, they lack crucial information at the land-ocean