Journal of Marine Systems最新文献

{"title":"Recent decline of sea ice area in the Bohai Sea over the period 2001 to 2023","authors":"Zhikun Lin ,&nbsp;Yu Yan ,&nbsp;Yingjun Xu ,&nbsp;Qingkang Hou ,&nbsp;Jialin Zhang ,&nbsp;Jiayu Ding","doi":"10.1016/j.jmarsys.2025.104089","DOIUrl":"10.1016/j.jmarsys.2025.104089","url":null,"abstract":"<div><div>The Bohai Sea, China's northernmost sea, experiences sea ice during winter that impacts shipping, ports, mariculture, and infrastructure, while also serving as vital habitat for the spotted seal. Monitoring sea ice variability is crucial for both marine economic and ecological sustainability. This study utilizes MODIS satellite images with minimal or no cloud cover and employs a sample-based object-oriented feature extraction method, along with visual interpretation corrections, to construct a daily (though discontinuous) time series of sea ice area in the Bohai Sea from 2001 to 2023. The average sea ice area decreased by 0.15 × 10⁴ km² (16.36 %) from 2001–2010 to 2011–2023. The longer initial freezing period (∼5 weeks) and shorter melting period (∼3 weeks) show an asymmetric unimodal pattern in daily average sea ice area variation. The severe freezing phase lasts nearly 6 weeks, typically reaching its peak in late January or early February. Spatially, sea ice freezing frequency decreases from north to south and nearshore to offshore, with frequencies above 40 % concentrated along the northern and eastern coasts of Liaodong Bay. The overall trend of sea ice freezing frequency per pixel shows a decline in 56.98 % of the entire sea area, with an average rate of −0.16 %. The trend of freezing frequency is declining in Liaodong Bay (−0.25 %) and Bohai Bay (−0.10 %) but slightly increasing in Laizhou Bay (0.02 %). Local climate factors, including air temperature, northward wind, and surface sensible heat flux, play a crucial role in sea ice variation in the Bohai Sea, while the AO (<em>r</em> = −0.71, <em>p</em> &lt; 0.01) and NAO (<em>r</em> = −0.61, <em>p</em> &lt; 0.01) indices serve as important large-scale climatic factors.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104089"},"PeriodicalIF":2.7,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of wave-current interaction on sea ice modelling of the Bohai Sea","authors":"Sheng Wang ,&nbsp;Xueen Chen ,&nbsp;Peng Zheng ,&nbsp;Bin Jia","doi":"10.1016/j.jmarsys.2025.104090","DOIUrl":"10.1016/j.jmarsys.2025.104090","url":null,"abstract":"<div><div>A sea ice model considering wave-current interaction (WCI) was constructed on the basis of the FVCOM, CICE, and Un-SWAN models for the Bohai Sea. The influence of WCI on sea ice formation and melting in the Bohai Sea during the winter of 2015/2016 was investigated. The results show that the WCI mainly affect the concentration and thickness of sea ice in the Bohai Sea. During the ice melting period, the WCI significantly increased the surface water velocity and sea ice melting rate of the Bohai Sea. The mechanism by which WCI affect the ice melting process is as follows: The non–conservative force(<strong><em>F</em></strong>^{<strong><em>w</em></strong>}) induced by WCI changes the amplitude and direction of the water velocity. During the ice melting period, the direction of <strong><em>F</em></strong>^{<strong><em>w</em></strong>} is nearly the same as the direction of the sea surface current in the marginal ice zone of Liaodong Bay, which consequently enhances the surface water current as well as its drag force on the sea ice, such processes accelerate sea ice advection and sea ice melting, and the white-capping breaking term plays a dominant role in the <strong><em>F</em></strong>^{<strong><em>w</em></strong>}. In the sea ice-covered areas, the presence of sea ice affects the propagation of waves, resulting in different degrees of wave height reduction. When the sea ice concentration is lower, the influence of sea ice on the structure and velocity of the current is more significant. From a thermodynamic perspective, when WCI are considered, the mixed layer depth (MLD) can increase by up to 15 m during the growth period, and the HC of the mixed layer can increase by up to 5000 GJ/m².</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104090"},"PeriodicalIF":2.7,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of the Iokanga River plume according to SAR and optical satellite data","authors":"Aleksandr Konik ,&nbsp;Alexander Osadchiev","doi":"10.1016/j.jmarsys.2025.104093","DOIUrl":"10.1016/j.jmarsys.2025.104093","url":null,"abstract":"<div><div>The Iokanga River is one of the largest rivers of the Kola Peninsula, discharging into the southwestern part of the Barents Sea and the northern part of the White Sea. The outflows from the Iokanga River and other regional rivers form a freshened coastal water mass, which extends eastward as the Coastal Murmansk Current. However, the dynamics and variability of small river plumes, which represent a transitional form between river discharge and the coastal water mass, remain practically unexplored in this region. In this study, based on high-resolution synthetic aperture radar (SAR) and optical images, the spatial characteristics of the Iokanga plume were examined and its dynamics were analyzed during the ice-free period. The study provides an assessment of external hydrometeorological factors and their contribution to the variability of the plume positions on various time scales. Notably, a key contribution of tidal currents to the formation of the intra-daily variability of the plume was established, which is nontypical for the majority of river plumes in the Arctic Ocean. The current work also describes the main characteristics of submesoscale eddies in the Iokanga plume and analyzes the mechanisms of their formation. The obtained results are crucial for understanding the process of coastal water mass formation in the southwestern Barents Sea and for identifying potential pathways for river-borne contaminant spread. From a methodological perspective, this work may be valuable for studying the characteristics of small river plumes using SAR and optical satellite data in coastal regions, which are poorly covered by in situ measurements.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104093"},"PeriodicalIF":2.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal and spatial variability and mechanisms of suspended sediment concentration in the Yellow River mouth and adjacent waters","authors":"Mengyuan Tao ,&nbsp;Tao Wang ,&nbsp;Zhixing Chen ,&nbsp;Gaibo Zhao ,&nbsp;Chenzhuo Song ,&nbsp;Changwei Bian ,&nbsp;Wensheng Jiang","doi":"10.1016/j.jmarsys.2025.104092","DOIUrl":"10.1016/j.jmarsys.2025.104092","url":null,"abstract":"<div><div>Suspended sediment concentration (SSC) plays a critical role in the ecological and geomorphological dynamics of coastal environments, particularly in river mouths where sediment fluxes are substantial. This study focuses on the Yellow River (YR) mouth and its adjacent waters, which is one of the coastal areas with the highest SSC in the world. Although some efforts have been made to understand the seasonal and spatial variability and mechanisms of SSC in this region, gaps remain, particularly in understanding the spatial disparity in high SSC distributions and its dynamic mechanisms. To address these gaps, observations based on four research cruises and numerical model simulations based on the Regional Oceanic Modeling System (ROMS) are conducted to study the variability and mechanisms of SSC. The findings reveal that SSC in the YR mouth and adjacent waters exhibits significant seasonal variability, with higher concentrations during winter due to stronger wind-induced resuspension. Two key hot-spots are identified: the YR mouth and the southern Bohai Strait. The high SSC is attributed to horizontal transport of riverine input and resuspension of bottom sediments in the YR mouth, and is mainly induced by bottom resuspension in the southern Bohai Strait. Additionally, tidal velocity is identified as a primary driver of SSC variations throughout the tidal cycle, with tidal phases of the observation time significantly influencing observed SSC and introducing uncertainty in spatial distribution analyses based on cruise observations. The current- and wave- induced bottom shear stresses (BSSs) both play primary roles in sediment resuspension, while the wave-induced BSS dominates the seasonal variability of SSC. The results are expected to contribute to advancing the understanding of sediment dynamics in river mouth and its adjacent waters.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104092"},"PeriodicalIF":2.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Progress in nutrient dynamics of green tide in the Yellow Sea of China","authors":"Tingting Wu ,&nbsp;Jingyi Sun ,&nbsp;Hongtao Liu ,&nbsp;Fangling Bi ,&nbsp;Jianheng Zhang ,&nbsp;Peimin He","doi":"10.1016/j.jmarsys.2025.104091","DOIUrl":"10.1016/j.jmarsys.2025.104091","url":null,"abstract":"<div><div>The green tide outbreak of <em>Ulva prolifera (U. prolifera)</em> in the Yellow Sea of China is one of the most significant green tide disasters worldwide. The abundant nutrients in the Yellow Sea provide the essential material basis for these outbreaks, as <em>U. prolifera</em> rapidly absorbs and stores these nutrients. Recent studies have identified genes in the <em>U. prolifera</em> genome that encode inorganic nitrogen transport proteins, and the nitrogen metabolism pathway of <em>U. prolifera</em> has been elucidated. This paper reviews the sources of nutrients in the Yellow Sea, analyzes their impact on the physiology of <em>U. prolifera</em>, and explores their influence on <em>U. prolifera</em> gene expression. Additionally, the study utilizes CiteSpace software to summarize research hotspots and trends related to nutrient. Based on these insights, the paper offers suggestions and prospects for future research directions, aiming to contribute new ideas for predicting, preventing, and controlling green tide outbreaks.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104091"},"PeriodicalIF":2.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth potential of Ulva prolifera in the South Yellow Sea and effectiveness of countermeasures","authors":"Changyou Wang ,&nbsp;Yuxing Tang ,&nbsp;Yiwen Xu ,&nbsp;Jie Xiao ,&nbsp;Shiliang Fan ,&nbsp;Yu Zang ,&nbsp;Zongling Wang ,&nbsp;Rongguo Su","doi":"10.1016/j.jmarsys.2025.104094","DOIUrl":"10.1016/j.jmarsys.2025.104094","url":null,"abstract":"<div><div>The effectiveness of green tide countermeasures was assessed using a model of <em>Ulva prolifera</em> growth factors and drift patterns in the South Yellow Sea. The reliability of the model was confirmed using satellite data showing the green tides in 2018, 2019, and 2021. The point of zero growth (biological zero) was determined to be 5.2 °C. The highest growth potential occurred successively in the sea area near 33.0°N and 123.5°E, Subei Shoal, and the north of Subei Shoal, from April to June, in the same chronological order with ascending order of surface sea temperature. Differences in growth potential were attributed to differences in dissolved inorganic nitrogen. Among the different countermeasures assessed, salvaging floating <em>U. prolifera</em> in open waters and early recycling of <em>Neopyropia</em> rafts were found to be the most effective in reducing the biomass of <em>U. prolifera</em> and the extent of green tides. In comparison, chemical treatment contributed only minimally to the reduction in <em>U. prolifera</em> biomass.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104094"},"PeriodicalIF":2.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mesoscale assemblages of fish and megainvertebrates as evidence of benthiscapes on continental shelves","authors":"Thomas Outrequin ,&nbsp;Hervé Le Bris ,&nbsp;Jacques Grall ,&nbsp;Pascal Laffargue","doi":"10.1016/j.jmarsys.2025.104088","DOIUrl":"10.1016/j.jmarsys.2025.104088","url":null,"abstract":"<div><div>Despite the relatively small proportion of ocean surface they represent, continental shelf ecosystems are among the most productive in the world. Located at the interface between terrestrial and marine environments, these habitats are structured by strong environmental forcings, especially on the sea bottom. A clear understanding of the spatial distribution of these habitats, along with knowledge on the composition and functioning of their associated communities, is essential for fisheries management and ecosystem conservation. Here, we used data from yearly EVHOE otter trawl surveys (2008–2020) to characterize the spatial structuration of benthic communities of the entire continental shelf of the Bay of Biscay (France), and to investigate the potential environmental drivers of these patterns. Two separate biological components were studied: epibenthic megainvertebrates and bentho-demersal fish. Clustering analyses identified seven assemblages from species composition of stations. Each assemblage was denominated according to its geographical location. We detected a strong correlation between the spatial organization of the different assemblages identified for fish and megainvertebrates, providing evidence for broad-scale spatial structuration of benthic habitats—benthiscapes—in this shelf ecosystem. The most influential environmental variables were identified as bottom temperature, sediment type, and primary production. Patterns in certain structural parameters, such as biomass, revealed possible spatial differences in ecological functioning. For example, we observed a drop in biomass from the coast to the central part of the shelf, followed by an increase in biomass near the edge of the Armorican shelf. These patterns reflect major large-scale processes (river inputs versus shelf-break upwelling) structuring the entire Bay of Biscay ecosystem. A comparative analysis revealed that the biological features and functioning observed in this study are shared with other European continental shelves. In addition to improving our knowledge of benthic environments, studies such as this one can promote improvements in ecosystem-based management and marine spatial planning of a fast-changing ecosystem under multiple anthropogenic stresses.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104088"},"PeriodicalIF":2.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distribution and abundance of fish larvae in the Patagonian Shelf-break Front","authors":"Martín D. Ehrlich ,&nbsp;Eduardo M. Acha ,&nbsp;Paola Betti ,&nbsp;Marina Do Souto ,&nbsp;Mariana Cadaveira ,&nbsp;Laura Machinandiarena","doi":"10.1016/j.jmarsys.2025.104087","DOIUrl":"10.1016/j.jmarsys.2025.104087","url":null,"abstract":"<div><div>The distribution and abundance of fish larvae were investigated in three sections across the Patagonian Shelf-break Front, in the Southwest Atlantic, between 44° and 47° S during springtime. Hydrographic sampling covered the shelf edge, slope and oceanic waters down to 3160 m depth. Larvae were collected with a Hydro-Bios Multi-net of 0.25 m² mouth size at 48 stations. Sampling covered the outer shelf, slope and oceanic waters. Each station was sampled during day and night at five depth levels from the surface to 200 m. At each station, temperature, salinity and fluorescence profiles were obtained to characterize water masses and detect the front. The variation in salinity between shelf and Malvinas Current waters was the most obvious sign of the frontal area. Twenty-two different species belonging to 10 orders and 16 families were found. On the outer shelf, were detected larvae of Perciformes and Scorpaeniformes, in low relative abundances. The slope was characterized by the presence of larvae of Myctophiformes and Gadiformes, while in the open ocean area, larvae of mesopelagic fishes such as Myctophiformes, Argentiniformes and Stomiiformes predominated. The highest abundance of larvae was found at the levels closest to the surface in the night stations. This study is the first one to obtain information on the ichthyoplankton composition of the Patagonian Shelf-break Front ecosystem for the austral spring period.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104087"},"PeriodicalIF":2.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dissolved organic matter (DOM) and barium in James Bay: Distribution, sources, and climate change implications","authors":"Justin Forget ,&nbsp;Zou Zou Kuzyk ,&nbsp;C.J. Mundy ,&nbsp;Céline Guéguen","doi":"10.1016/j.jmarsys.2025.104084","DOIUrl":"10.1016/j.jmarsys.2025.104084","url":null,"abstract":"<div><div>The properties of dissolved organic matter (DOM) were examined in a dataset representative of the James Bay (Canada) marine system following two summer expeditions in 2021 and 2022. The absorption coefficients at 275 nm (a₂₇₅) and 295 nm (a₂₉₅) of the chromophoric DOM (CDOM) were used to establish a region-specific, usable in-depth, predictive model of dissolved organic carbon (DOC) concentration in summer, with a mean absolute percentage error of only 11 %, comparable to other models in polar environments. The DOC concentration, a₃₅₀, the spectral slope between 275 and 295 nm (S₂₇₅_–₂₉₅), the dissolved barium concentration, and four PARAFAC components (three humic-like and one protein-like) were employed as freshwater tracers. At the surface, we observed a very low DOM region in the north-west of the bay associated with the inflow of marine waters from Hudson Bay, a highly DOM-rich region in the south and east in James Bay caused by strong riverine inputs and, in the north-east, a very fresh region, but with lower DOM concentrations than to the south, induced by the discharge of the La Grande River. At depth, a homogeneous, low DOM distribution is observed in the north of James Bay, extending from east to west. In contrast, the deep water to the south is much richer in DOM and appears to circulate along the east coast. The lack of exchange at depth between the northern and southern regions is attributed to the presence of a sill that creates a physical barrier. The analysis of lignin-phenols in surface samples revealed a more “woody gymnosperm” vegetation compared to the Hudson Bay Rivers further north, which is in line with the known vegetation surrounding the Bay. The portrait of the DOM in offshore James Bay in summer thus provides a benchmark for studying the evolution of the carbon pool under climate change in this region, which is likely to undergo significant upheaval due to permafrost thaw, increased riverine inputs, and alteration of the vegetal ecosystem.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104084"},"PeriodicalIF":2.7,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Subtidal variability of near-surface salinity in the Cochin estuary, southwest coast of India: Insights from year-long continuous observation","authors":"I.P. Safin ,&nbsp;V. Vijith ,&nbsp;R. Sajeev ,&nbsp;N. Anup ,&nbsp;S. Vasudevan ,&nbsp;N.M.I. Shehsin ,&nbsp;P.K. Saji ,&nbsp;K.A. Anoop ,&nbsp;K. Shameem ,&nbsp;N.T. Manoj","doi":"10.1016/j.jmarsys.2025.104086","DOIUrl":"10.1016/j.jmarsys.2025.104086","url":null,"abstract":"<div><div>A significant knowledge gap exists about the subtidal variations in salinity in Indian monsoonal estuaries due to a lack of continuous data. To address this, we collected high-resolution, long-term near-surface measurements from the Cochin estuary in southwestern India. A wavelet spectral analysis of this data reveals notable subtidal variability in the estuary, with periods ranging from 10 to 90 days. This indicates the presence of intraseasonal oscillations throughout the year, from December 2019 to May 2021. During the wet monsoon season (June–September), subtidal variations in near-surface salinity show amplitudes typically oscillating between 5 and 10 with an average salinity of 6.5, occasionally matching the dominant tidal amplitudes. In the dry season (December to April), the average surface salinity is around 30, and the subtidal oscillation amplitude typically ranges from 3 to 5. We compared the observed subtidal salinity variability with other environmental data, such as rainfall, residual sea-level variability near the estuary's mouth, and water-level variability upstream in the riverine channels. This comparison is used to speculate on the processes controlling the observed subtidal variability. We explored two possible processes that could cause subtidal salinity variability. The first process is the influence of 30–60 day oscillations associated with Monsoon Intraseasonal Oscillations (MISO). MISO involves the northward movement of cloud bands from the equatorial Indian Ocean towards the Himalayan foothills. We present evidence suggesting that coherent oscillations exist in the estuary within the MISO band. The second process relates to the influence of shelf wave propagation along the coast. During the dry season, we observed coherent oscillations in both surface salinity and sea level within a quasi-biweekly (10–20 days) period. The presence of shelf wave propagation along the coast during this season may explain the quasi-biweekly subtidal salinity variations in the estuary. Our findings have broader implications for understanding subtidal estuarine dynamics in monsoonal regimes of the Indian Ocean and other similar regions.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"250 ","pages":"Article 104086"},"PeriodicalIF":2.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}