Journal of Marine Systems最新文献

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Seasonal patterns of microbial plankton and periodicity of climatic and hydrographic conditions in a semi-desert macrotidal wetland 半荒漠潮间带湿地微生物浮游生物的季节模式与气候和水文条件的周期性
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2025-01-01 DOI: 10.1016/j.jmarsys.2024.104023
Juan F. Saad , Giuliana M. Burgueño , Gabriela N. Williams , Marianela Gastaldi , Patricio J. Pereyra , Raúl A. Gonzalez , Maite A. Narvarte , Viviana A. Alder
{"title":"Seasonal patterns of microbial plankton and periodicity of climatic and hydrographic conditions in a semi-desert macrotidal wetland","authors":"Juan F. Saad ,&nbsp;Giuliana M. Burgueño ,&nbsp;Gabriela N. Williams ,&nbsp;Marianela Gastaldi ,&nbsp;Patricio J. Pereyra ,&nbsp;Raúl A. Gonzalez ,&nbsp;Maite A. Narvarte ,&nbsp;Viviana A. Alder","doi":"10.1016/j.jmarsys.2024.104023","DOIUrl":"10.1016/j.jmarsys.2024.104023","url":null,"abstract":"<div><div>Macrotidal wetlands of temperate areas are highly productive systems where interactions between land and water are particularly dynamic. Typically, these systems display temporal shifts in their water properties not only because of annual fluctuations in the photoperiod and air temperature but also due to strong tidal regimes and climatic events. In contrast with the well-studied microtidal systems, the temporal fluctuations in structure and biomass of microbial communities of semi-desert, enclosed temperate macrotidal wetlands are scarcely known, and thus the coupling between primary producers and the bacterial community occurring within them remains poorly understood. In this study we analyze the fluctuations of unicellular plankton and hydrographic conditions on a fixed station located in San Antonio Bay (SAB, Northern Argentine Patagonia) from spring 2016 to early summer 2018 with the aim of detecting possible associations with the periodicity of some climatological variables and local meteorological events. Density and biomass of microbial size fractions (pico-, nano- and microplankton) along with their nutrition modes (autotrophic, potentially mixotrophic and heterotrophic) were assessed based on bi-weekly samplings. In addition, the study also examines the relationships of autotrophs and bacterioplankton with the frequency, duration, and magnitude of phytoplanktonic blooms, as well as the biomass contribution of dominant diatom species. We found a microbial-dominated planktonic system with increased densities of both autotrophic and heterotrophic picoplankton and flagellated protists. The biomass of potentially mixotrophs dominated over that of autotrophs and heterotrophs along the entire period. Autotrophic biomass showed a single annual maximum in summer, while chlorophyll-<em>a</em> displayed a biannual cycle. Neither chlorophyll-<em>a</em> nor autotrophic biomass reached high values as compared to other coastal systems with no clear dominant phytoplanktonic taxa. The annual phytoplanktonic biomass cycle in SAB appears not to be related to those of other coastal environments from North Patagonia. We infer that the strong macrotidal dynamics limits primary production and turns this system into a high nutrient/low chlorophyll one that exports surplus nutrients in tide-driven pulses to neighboring areas.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"247 ","pages":"Article 104023"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180865","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}
引用次数: 0
An Informer-based prediction model for extensive spatiotemporal prediction of sea surface temperature and marine heatwave in Bohai Sea 基于informer的渤海海温与海洋热浪大范围时空预报模型
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2025-01-01 DOI: 10.1016/j.jmarsys.2024.104037
Jingjing He , Songlin Yin , Xianyao Chen , Bo Yin , Xianqing Huang
{"title":"An Informer-based prediction model for extensive spatiotemporal prediction of sea surface temperature and marine heatwave in Bohai Sea","authors":"Jingjing He ,&nbsp;Songlin Yin ,&nbsp;Xianyao Chen ,&nbsp;Bo Yin ,&nbsp;Xianqing Huang","doi":"10.1016/j.jmarsys.2024.104037","DOIUrl":"10.1016/j.jmarsys.2024.104037","url":null,"abstract":"<div><div>Marine heatwaves (MHWs) are prolonged events of extreme sea surface temperature (SST) that have adverse effects on marine ecosystems and socio-economic aspects. Therefore, accurately and effectively predicting SST and MHW events in advance is crucial for mitigating their adverse effects. However, prediction of extreme events over the long term remains a significant challenge. In this study, we apply a deep-learning technique based on Informer, combined with the Empirical Orthogonal Function (EOF) and Empirical Mode Decomposition (EMD), named EOF-EMD-Informer, to improve the prediction of MHWs' occurrence on spatiotemporal scales. Extensive experiments in the Bohai Sea, based on daily satellite-observed SST, shows that the proposed Informer-based model outperforms recurrent neural networks and their variants in medium-term prediction of SST and MHWs' occurrence. The model performs well in predictions up to 30 days ahead, with a root mean square error of about 0.96 °C and an F1 score of about 0.93. About 51 % of the spatial grids have a root mean square error smaller than 0.55 °C with EOF-EMD-Informer model, representing an improvement of approximately 5 % and 27 % compared to the EMD-Informer and Informer models, respectively. This study serves as a proof of concept, demonstrating the potential applications of Informer-based methods in medium-term (up to at least 30 days) predictions of daily SST and MHWs and highlighting their effectiveness in extensive spatiotemporal predictions.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"247 ","pages":"Article 104037"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179980","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}
引用次数: 0
Multi-month prediction of summertime hypoxia occurrence in the bottom of Funka Bay, Japan, with a focus on the wintertime surface heat flux 日本丰卡湾底部夏季缺氧发生的多月预测,重点关注冬季地表热通量
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2025-01-01 DOI: 10.1016/j.jmarsys.2024.104035
Chihiro Miki , Hiroto Abe , Hiroji Onishi , Atsushi Ooki , Tetsuya Takatsu
{"title":"Multi-month prediction of summertime hypoxia occurrence in the bottom of Funka Bay, Japan, with a focus on the wintertime surface heat flux","authors":"Chihiro Miki ,&nbsp;Hiroto Abe ,&nbsp;Hiroji Onishi ,&nbsp;Atsushi Ooki ,&nbsp;Tetsuya Takatsu","doi":"10.1016/j.jmarsys.2024.104035","DOIUrl":"10.1016/j.jmarsys.2024.104035","url":null,"abstract":"<div><div>Hypoxic water (&lt; 2 mL of O<sub>2</sub> per L), which can cause mass mortality of demersal fishes, is reported to occur in the enclosed coastal area around the world. Funka Bay, a semi-enclosed and cone-shaped bay with a maximum depth of 107 m, located in the southern part of Hokkaido, Japan, also suffers summertime bottom hypoxic water. Long-term monitoring reveals that the occurrence is greatly variable year by year, yet the controlling factor is still unknown. The present study examined the interannual variability of summertime bottom dissolved oxygen (DO) with the focus on the wintertime heat loss of the water and subsequent convection overturning using year-round moored/ship-board DO observation for the period of 2012–2019. A common feature found in the 8 years was the continuous recovery of bottom DO in winter from the previous summer, which peaked February or March. The first half of the analysis period ceased the DO recovery until February, while one month extension of the DO recovery by March in the second half. The latter tended to show less hypoxia in the following summer as its peak is higher and its DO reduction phase starts later. Wintertime surface heat flux in February created the difference; more heat was lost in the second half because of warmer water temperature under the winter atmosphere. We were successful to predict summertime bottom DO with the accuracy of 0.26 mL/L considering the wintertime heat flux and stratification. This multi-month prediction will be of great help for future fishery activity in Funka Bay.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"247 ","pages":"Article 104035"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180545","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
Comments on “Distributions, sea-to-air fluxes, and biological consumption of carbon monoxide in the Bohai and Yellow Seas during winter” by Lin Yang et al., J. Mar. Syst. 2024, 245, 103994 林洋等,《冬季渤海、黄海一氧化碳的分布、海气通量和生物消耗》[j] .海洋科学学报,2024,245,103994
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2025-01-01 DOI: 10.1016/j.jmarsys.2024.104025
Dag Myrhaug
{"title":"Comments on “Distributions, sea-to-air fluxes, and biological consumption of carbon monoxide in the Bohai and Yellow Seas during winter” by Lin Yang et al., J. Mar. Syst. 2024, 245, 103994","authors":"Dag Myrhaug","doi":"10.1016/j.jmarsys.2024.104025","DOIUrl":"10.1016/j.jmarsys.2024.104025","url":null,"abstract":"","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"247 ","pages":"Article 104025"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179981","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}
引用次数: 0
Different response of hydrodynamics and near-bottom sediment transport to a cold front in the Changjiang Estuary and its submerged delta 长江口及其水下三角洲冷锋对水动力和近底输沙的不同响应
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2025-01-01 DOI: 10.1016/j.jmarsys.2024.104022
Xuefeng Wu, Weiming Xie, Naiyu Zhang, Leicheng Guo, Qing He
{"title":"Different response of hydrodynamics and near-bottom sediment transport to a cold front in the Changjiang Estuary and its submerged delta","authors":"Xuefeng Wu,&nbsp;Weiming Xie,&nbsp;Naiyu Zhang,&nbsp;Leicheng Guo,&nbsp;Qing He","doi":"10.1016/j.jmarsys.2024.104022","DOIUrl":"10.1016/j.jmarsys.2024.104022","url":null,"abstract":"<div><div>Cold fronts are expected to exert a significant impact on hydrodynamics and sediment dynamics in estuaries, but the exact influence remains insufficiently understood. In this study, we provided an in-depth examination of cold front impact based on a 13-day in-situ observation in the South Passage of the Changjiang Estuary. We deployed two bottom-mounted tripod systems and several buoy stations to collect current velocities, wave heights, wind speeds, near-bottom suspended sediment concentrations (SSC), and bed level changes. Data analyses indicated that the maximum wind speed reached over 20 m/s, with significant wave heights of 1.38 m and 2.66 m inside and outside the South Passage, respectively. Wave-induced bed shear stress predominantly contributed to the total shear stress, and reached up to 0.81 N/m<sup>2</sup> outside the South Passage. Near-bottom SSC increased by 31 % and 20 % inside and outside the South Passage, respectively, during the post-frontal period, compared to the frontal passage period. The cold front event intensified both the longitudinal circulation in the South Passage and the transverse transport intensity outside the South Passage, leading to a shift in sediment transport direction and landward sediment transport towards the South Passage during the post-frontal period. The cold-front-induced bed shear stress resulted in sediment resuspension in the submerged delta, thereby facilitating a more homogeneous vertical distribution of suspended sediment in the bottom boundary layer. These findings provide insights into the impact of episodic events on water-sediment exchanges at the estuary-ocean interface.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"247 ","pages":"Article 104022"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179982","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}
引用次数: 0
The instabilities of the Antarctic slope current in an idealized model 理想模式下南极坡流的不稳定性
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2025-01-01 DOI: 10.1016/j.jmarsys.2024.104034
Chengyan Liu , Zhaomin Wang , Xi Liang , Xiang Li , Xianxian Han , Wenjin Sun , Yang Wu , Xichen Li , Chen Cheng
{"title":"The instabilities of the Antarctic slope current in an idealized model","authors":"Chengyan Liu ,&nbsp;Zhaomin Wang ,&nbsp;Xi Liang ,&nbsp;Xiang Li ,&nbsp;Xianxian Han ,&nbsp;Wenjin Sun ,&nbsp;Yang Wu ,&nbsp;Xichen Li ,&nbsp;Chen Cheng","doi":"10.1016/j.jmarsys.2024.104034","DOIUrl":"10.1016/j.jmarsys.2024.104034","url":null,"abstract":"<div><div>The Antarctic Slope Current (ASC), coupled with the Antarctic Slope Front (ASF), encircles Antarctica and is a roughly alongshore flow. Yet, the instabilities of the ASC/ASF can induce cross-slope exchanges. The ASC/ASF instabilities have been studied extensively in previous literature. However, the corresponding responsible mechanisms and influences still need to be further clarified. Based on an idealized eddy-resolving model, this study focuses on the instabilities of the ASC/ASF with constant open boundary forcing. The ASC/ASF is classified into three types: Fresh Shelf, Warm Shelf, and Dense Shelf. Focused on the Fresh Shelf and Dense Shelf cases, two high-resolution process-oriented numerical experiments are conducted to reveal the typical characteristics, the dynamic mechanisms, and the influences of instabilities. In the Fresh Shelf case, the instabilities are characterized by a submesoscale vortex train over the middle-lower slope, associated with the Topographic Rossby waves. In the Dense Shelf case, a mesoscale vortex train is present over the lower slope, and abundant filaments and jets can flow across the shelf break. The baroclinic instability greatly contributes to the generation of instabilities in the two cases, yet the barotropic instability contributes less to the instabilities in the Fresh Shelf case. Coherent eddies have been identified and significantly favor the hydrographic anomalies by the advection of water boluses retaining source water rather than the polarities of coherent eddies. Instabilities only contribute to exchanges across the continental rise in the Fresh Shelf case but effectively result in cross-slope exchanges in the Dense Shelf case.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"247 ","pages":"Article 104034"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179978","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}
引用次数: 0
Internal tidal dynamics and associated processes at highly supercritical slopes in Banda Sea: Lessons from the oceanic island of Ambon, eastern Indonesia 班达海高度超临界斜坡的内部潮汐动力学及相关过程:印度尼西亚东部安汶海洋岛的经验教训
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2024-11-01 DOI: 10.1016/j.jmarsys.2024.104020
Gerry Giliant Salamena , Jacobo Martín , Sem Likumahua , Ferdimon Kainama , Daniel Deonisius Pelasula , Intan Suci Nurhati
{"title":"Internal tidal dynamics and associated processes at highly supercritical slopes in Banda Sea: Lessons from the oceanic island of Ambon, eastern Indonesia","authors":"Gerry Giliant Salamena ,&nbsp;Jacobo Martín ,&nbsp;Sem Likumahua ,&nbsp;Ferdimon Kainama ,&nbsp;Daniel Deonisius Pelasula ,&nbsp;Intan Suci Nurhati","doi":"10.1016/j.jmarsys.2024.104020","DOIUrl":"10.1016/j.jmarsys.2024.104020","url":null,"abstract":"<div><div>Interactions between the deep sea and steep-sloping oceanic islands generate physical processes with potential impacts on sediment resuspension and ocean productivity. While studies have been conducted in the open oceans, those focusing on oceanic islands of the deep Banda Sea in eastern Indonesia are lacking. Here, we present the first observational evidence of vertical mechanisms (i.e. internal tidal reflection, internal hydraulic jumps) at the highly supercritical slope in outer Ambon Bay (OAB) in Ambon Island – an oceanic island in the Banda Sea. A 23-h CTD yoyo experiment combined with ADCP measurements conducted during spring flood and ebb tides demonstrated tidally-varying vertical temperature, salinity and density profiles. During spring flood tide, incoming internal tides were reflected by OAB's highly supercritical slope back to the deep sea with isopycnals and isotherms showing sharp downward plunges (downward vertical velocity = 6.5–8.3 × 10<sup>−3</sup> m/s), and the internal tidal amplitude reaching 90–110 m. The reflection during flood tide caused seaward overturning flow at deeper depths despite the prevailing landward flow at the upper layers. During spring ebb tide, internal hydraulic jumps (upward vertical velocity = 6.1–6.48 × 10<sup>−3</sup> m/s) occurred to rebound the downward plunges of isopycnals and isotherms as flood tide relaxed with the observed amplitude of internal tides of 90 m. We also observed weakened seaward ebb flow during the isothermal uplifting (when hydraulic jumps occurred), and subsequent intensified landward flow at the end of spring ebb tide indicating strong upslope flow when isotherms reached the maximum shoaling depths. Taken together, the observed vertical mechanisms indicate the conservation of energy at the highly supercritical slope of OAB evident by the comparable vertical velocities. An embedded turbidity-chlorophyll profiler in the CTD reveals that internal tidal activities at the highly supercritical slopes OAB may induce bottom nepheloid layers, and influence ocean productivity by regulating the vertical distribution of phytoplankton biomass.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"246 ","pages":"Article 104020"},"PeriodicalIF":2.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578571","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}
引用次数: 0
Fine-scale phytoplankton community transitions in the oligotrophic ocean: A Mediterranean Sea case study 寡营养海洋中细尺度浮游植物群落过渡:地中海案例研究
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2024-11-01 DOI: 10.1016/j.jmarsys.2024.104021
Laurina Oms , Monique Messié , Jean-Christophe Poggiale , Gérald Grégori , Andrea Doglioli
{"title":"Fine-scale phytoplankton community transitions in the oligotrophic ocean: A Mediterranean Sea case study","authors":"Laurina Oms ,&nbsp;Monique Messié ,&nbsp;Jean-Christophe Poggiale ,&nbsp;Gérald Grégori ,&nbsp;Andrea Doglioli","doi":"10.1016/j.jmarsys.2024.104021","DOIUrl":"10.1016/j.jmarsys.2024.104021","url":null,"abstract":"<div><div>The vast diversity of marine phytoplankton, shaped by intricate water dynamics, remains poorly understood in the oligotrophic ocean. <em>In situ</em> studies reveal fine-scale dynamics affecting phytoplankton distribution, leading to abrupt shifts in abundance and biomass referred here as “phytoplankton community transitions” (PCTs). Using a simple nutrient–phytoplankton–zooplankton (NPZ) numerical model, our study proposes a theoretical framework to explain PCTs observed during an oceanographic cruise in the Mediterranean Sea. We consider both a homogeneous and a variable environment, respectively corresponding to the waters on both sides of a front and to the frontal area itself. In the model, PCTs between one community of smaller phytoplankton and one community of bigger phytoplankton are controlled by nutrient supply, but not directly: nutrient supply affects all compartments of the model and creates PCTs by combining bottom-up and top-down controls. This mechanism is observed for both constant (i.e., within a water mass) and pulsed (i.e., in the front) nutrient supply. These results are consistent with <em>in situ</em> observations of biomass proportion across a front. This theoretical framework helps to better understand and plan <em>in situ</em> observations in oceanic regions characterized by fine-scale dynamics and oligotrophic conditions.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"246 ","pages":"Article 104021"},"PeriodicalIF":2.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704490","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
Summertime nutrient transports in the coastal areas of the Western Northern Yellow Sea 北黄海西部沿岸地区夏季营养盐迁移量
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2024-10-10 DOI: 10.1016/j.jmarsys.2024.104018
Chuanxi Xing, Xuefeng Cao, Qian Zhao
{"title":"Summertime nutrient transports in the coastal areas of the Western Northern Yellow Sea","authors":"Chuanxi Xing,&nbsp;Xuefeng Cao,&nbsp;Qian Zhao","doi":"10.1016/j.jmarsys.2024.104018","DOIUrl":"10.1016/j.jmarsys.2024.104018","url":null,"abstract":"<div><div>The summertime nutrient transports in the western Northern Yellow Sea (NYS) have not been well understood due to regional complex physical-biological processes. A coupled model was developed to investigate the summertime nutrient transports in the western NYS. Based on a suite of quantitative skill metrics, the model performance was comprehensively evaluated by comparing the simulated results to a collection of observational data in 2019. The model results were capable of reproducing the observed hydrographical conditions and nutrient distributions in different seasons. In the summer, the coastal areas in the east of Liaodong Peninsula (Zone1) and north of Shandong Peninsula (Zone2) both lost nutrients through cross-boundary nutrient transports for Dissolved Inorganic Nitrogen (DIN) and Dissolved Inorganic Phosphate (DIP). Changes in the surface wind altered the regional circulation and consequently caused variations in nutrient transports for the two zones. Increase in the velocities of southerly wind led to more nutrient losses in Zone1 and less nutrient losses in Zone2. Further sensitivity analysis suggested that the Yalu River was not the dominating factor influencing the nutrient budget of Zone1, and oceanic nutrients contributed around 70 % of the DIN and 99 % of the DIP transported into Zone1. The outflow from Bohai Sea (BS) to NYS dominated the nutrient budget of Zone2. Among the nutrients from the BS, 94.76 % of the DIP were from internal nutrient pool and 3.03 % were from newly input riverine nutrients, those ratios for DIN were 78.79 % and 19.30 %. The Yellow River and Yalu River discharges modulated the regional circulations introducing moderate variations to the nutrient budgets of Zone1 and Zone2.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"246 ","pages":"Article 104018"},"PeriodicalIF":2.7,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442331","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}
引用次数: 0
Variability of inherent optical properties of seawater in relation to the concentration and composition of suspended particulate matter in the coastal Arctic waters of western Spitsbergen 海水固有光学特性的变化与斯匹次卑尔根西部沿岸北极水域悬浮颗粒物的浓度和组成的关系
IF 2.7 3区 地球科学
Journal of Marine Systems Pub Date : 2024-10-10 DOI: 10.1016/j.jmarsys.2024.104019
Sławomir B. Woźniak , Dagmara Litwicka , Joanna Stoń-Egiert , Dariusz Stramski
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