Journal of Marine Systems最新文献

Corrigendum to “Extreme underestimation of satellite-derived chlorophyll-a concentration in the northwestern Weddell Sea during a phytoplankton bloom and its reasons” [Journal of Marine Systems, Volume 252, (2025), 104159, DOI: 10.1016/j.jmarsys.2025.104159] “在浮游植物爆发期间，威德尔海西北部卫星衍生叶绿素-a浓度的极度低估及其原因”的勘误表[海洋系统杂志，252卷，（2025），104159,DOI: 10.1016/j.jmarsys.2025.104159]

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-21 DOI: 10.1016/j.jmarsys.2026.104184

Pavel A. Salyuk , Dmitry I. Glukhovets , Alexander A. Latushkin , Olga Yu. Kalinina , Elena A. Shtraikhert , Philipp V. Sapozhnikov , Sergey A. Mosharov , Igor E. Stepochkin , Nadezhda A. Lipinskaya , Maxim I. Gorbov , Svetlana K. Klimenko

引用次数: 0

Geomorphology and bait-attending hadal fauna of the Sui-shin hole (Philippine Basin, NW Pacific; 5616–6410 m) 西北太平洋菲律宾海盆，5616-6410米的Sui-shin洞的地貌和食饵潮动物群

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2026.104183

Heather A. Stewart , Denise J.B. Swanborn , Elin A. Thomas , Jennifer A. Wainwright , Melanie S. Stott , Megan E. Cundy , Alan J. Jamieson

The Sui-shin Hole, formerly referred to as the ‘Black Hole’, is a structurally complex area of the Philippine tectonic plate (NW Pacific Ocean) that attains a maximum water depth of 6410 m and is topographically isolated from all adjacent basins. Here we present new high-resolution bathymetry and geomorphological characterisation of the feature, and baited camera and trap lander data to examine patterns in bait-attending fauna, and other incidental fauna, across the abyssal-hadal transition zone in a non-subduction setting less typical of hadal ecological studies. The occurrence, depth ranges and maximum numbers of species between 5589 and 6405 m water depth are presented, along with an analysis of drivers of community composition. The dominant taxa of fish, Decapoda, and Amphipoda were mostly abyssal and cosmopolitan that are known to inhabit the upper depths of larger trenches elsewhere. Seafloor morphology itself is therefore unlikely to be a factor in controlling presence/absence or depth ranges in these species, nor was an effect of the complex and somewhat unique geomorphology of the Sui-shin Hole observed on the bait-attending faunal community. The presence of some hadal amphipod families suggests that these populations will emerge where the minimum depth they require is available, despite otherwise occupying very large depth ranges in other features. Contrastingly, snailfish (Liparidae) are entirely absent despite the availability of a compatible minimal depth, suggesting that this group requires a far deeper hadal feature with suitable inhabitable depth ranges for a population to emerge.

Sui-shin洞，以前被称为“黑洞”，是菲律宾构造板块（西北太平洋）的一个结构复杂的区域，最大水深为6410米，在地形上与所有邻近的盆地隔绝。在这里，我们提出了新的高分辨率测深和地貌特征，以及诱饵相机和陷阱着陆器数据，以研究在非俯冲环境中不太典型的深渊生态研究中穿越深渊-深渊过渡带的诱饵动物和其他附带动物的模式。在水深5589 ~ 6405 m范围内，研究了群落的分布、深度范围和最大数量，并对群落组成的驱动因素进行了分析。鱼类的主要分类群，十足类和片足类，大多是深海和世界性的，已知它们栖息在其他地方较大的海沟的上层深处。因此，海底形态本身不太可能是控制这些物种存在/不存在或深度范围的因素，也不是观察到的瑞信洞复杂而有些独特的地貌对食饵动物群落的影响。一些双足类片足类的存在表明，这些种群将出现在它们所需的最小深度可用的地方，尽管在其他特征中占据了非常大的深度范围。相比之下，尽管存在可兼容的最小深度，但完全没有蜗牛鱼（鲤科），这表明这一群体需要一个更深的hadal特征，具有适合居住的深度范围，才能出现一个种群。

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引用次数: 0

Propagation of Ensemble Kalman Filter corrections into nested ocean model domains: A Norwegian coast case study 集成卡尔曼滤波校正在嵌套海洋模型域中的传播：挪威海岸案例研究

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2025.104177

Daniel Ørnes Halvorsen , Ingrid Helene Ellingsen , Morten Omholt Alver

As ocean observational systems expand their spatiotemporal coverage and models in ocean forecasting systems grow more complex and simulate at higher resolutions, the computational cost of assimilating observations using tools such as the Ensemble Kalman Filter increases, and at the finest model grid scales suitable observations are often too sparse or too coarse for direct assimilation. Consequently, investigating optimal strategies for data assimilation becomes imperative, particularly in nested ocean model setups. These setups present an opportunity to assimilate new observations primarily in the coarser ’mother’ domains provided that one can still capitalize on the benefits of observational data in nested domains through data propagation across boundary conditions. In this study, we assimilate sea surface temperature and salinity observations into a regional domain and examine their propagation to a nested local coastal domain, analyzing 12 distinct subdomains that capture various inflow and outflow regimes. Our findings reveal considerable spatiotemporal variability across these subdomains, with areas under the influence of strong inflows, notably along the Norwegian Coastal Current, benefiting the most from observational data assimilated in the mother domain. This study contributes to efforts to balance computational cost and forecast accuracy in ocean forecasting systems, setting the stage for further advancements in efficient and accurate ocean predictions.

随着海洋观测系统时空覆盖范围的扩大和海洋预报系统模式的复杂化和模拟分辨率的提高，使用集合卡尔曼滤波等工具同化观测数据的计算成本增加，而在最精细的模型网格尺度上，合适的观测数据往往过于稀疏或过于粗糙，无法直接同化。因此，研究数据同化的最佳策略变得势在必行，特别是在嵌套的海洋模型设置中。这些设置提供了一个主要在较粗的“母”域中吸收新观测的机会，前提是人们仍然可以通过跨边界条件的数据传播利用嵌套域中观测数据的好处。在本研究中，我们将海面温度和盐度观测同化到一个区域域，并检查它们在一个嵌套的当地沿海域的传播，分析了12个不同的子域，这些子域捕获了各种流入和流出状态。我们的研究结果揭示了这些子域之间相当大的时空变化，受强流入影响的地区，特别是挪威沿海流，从母域吸收的观测数据中受益最大。本研究有助于平衡海洋预报系统的计算成本和预报精度，为进一步提高海洋预报的效率和准确性奠定基础。

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引用次数: 0

Deep sediments and foraminifera assemblages in the Tayrona Basin, Southern Caribbean 南加勒比海泰罗纳盆地的深层沉积物和有孔虫组合

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2026.104181

Gladys Bernal , Daniel Rincón-Martínez , Camila Barragán , Gabriel Martínez , Julián Naranjo-Vesga , Angélica Carreño , Jael Pacheco-Mendoza , Alejandro Gutiérrez , Milena Benavides , Julia Gottschalk , Christian Winter

This study investigates surface sediments from the seafloor of the Tayrona Basin, an understudied forearc basin in the Colombian Caribbean, offshore La Guajira. We analyzed grain size, mineralogical composition, major and minor elemental concentrations, organic carbon content, C/N ratios, and benthic foraminiferal (BF) assemblages to assess sedimentation processes and environmental conditions. Sediment and bottom-water samples were collected using a box corer and CTD during the Maria S. Merian MSM112 cruise in 2022. Multivariate statistical methods were applied to explore the relationships between environmental and ecological parameters. Despite the relative uniformity of bottom-water conditions, multivariate analyses of BF and sedimentological parameters revealed four distinct zones, each characterized by specific BF assemblages and sediment compositions. The Tayrona Basin exhibits signs of high surface productivity, yet, high oxygen levels in bottom waters promote active organic matter degradation, leading to lower total organic carbon (TOC) content in the sediments. Sedimentation is influenced by a combination of contour currents, terrigenous input from the Magdalena and Ranchería river systems, and autochthonous biogenic deposition. Benthic foraminiferal assemblages are dominated by agglutinated and epifaunal species, indicative of deep-marine environments influenced by bottom currents and organic matter flux. The study highlights the role of bottom-water oxygenation, terrigenous input, and deep-sea currents in shaping the sedimentary record of this forearc basin. This baseline dataset contributes to the understanding of sedimentary and ecological processes in deep-marine forearc settings.

这项研究调查了泰罗纳盆地海底的表层沉积物，这是哥伦比亚加勒比海的一个未被充分研究的弧前盆地，位于瓜吉拉近海。我们分析了粒度、矿物组成、主、次元素浓度、有机碳含量、碳氮比和底栖有孔虫（BF）组合，以评估沉积过程和环境条件。在2022年Maria S. Merian MSM112巡航期间，使用盒盖和CTD收集了沉积物和底水样本。采用多元统计方法探讨环境参数与生态参数之间的关系。尽管底水条件相对均匀，但对高炉和沉积参数的多元分析显示出四个不同的带，每个带都有特定的高炉组合和沉积物组成。Tayrona盆地地表生产力高，但底部水体的高氧水平促进了活性有机物降解，导致沉积物中总有机碳（TOC）含量较低。沉积受等高线流、Magdalena河和Ranchería河水系的陆源输入以及本地生物沉积的共同影响。底栖有孔虫组合以粘聚和底端物种为主，表明受底流和有机质通量影响的深海环境。研究强调了海底氧合作用、陆源输入和深海洋流在形成弧前盆地沉积记录中的作用。该基线数据有助于了解深海弧前环境下的沉积和生态过程。

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引用次数: 0

A case study on tropical cyclone Oma-induced phytoplankton bloom in eastern Australia 热带气旋奥玛在澳大利亚东部引起的浮游植物水华的个案研究

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2025.104178

Yuxia Liu , Ye Wan , Ziqiong Cheng , Rufa'i Isyaku , Haibin Lü

In February 2019, a significant phytoplankton bloom occurred in the eastern Australian waters following Tropical Cyclone (TC) Oma. This study presents a comprehensive analysis of the upper ocean's ecological response to the TC, utilizing remote sensing data, reanalysis data, and Argo float observations. The results revealed that a clockwise-rotating eddy with a vorticity of up to 0.25 s⁻¹ formed in the area impacted by the TC. At the center of the eddy, the Chl-a concentration rose significantly to 0.2 mg·m⁻³.This highlights the eddy's key role in facilitating phytoplankton growth. Observations after the cyclone showed a deepening of the mixed layer, weakening of the thermocline, and thinning of the barrier layer. These changes collectively enhance the transport of deep-layer nutrients to the surface layer for phytoplankton growth. Furthermore, photosynthetically active radiation (PAR) in the eddy's region rose significantly to 60 Einstein·m⁻²·day⁻¹ after February 21, remaining high and creating optimal light conditions for the Chl-a bloom in the study region. The study can improve our understanding of the interactions between TCs and marine ecosystems in Eastern Australia.

2019年2月，热带气旋（TC） Oma过后，澳大利亚东部水域出现了一次重大的浮游植物繁殖。本文利用遥感资料、再分析资料和Argo浮标观测资料，综合分析了上层海洋对TC的生态响应。结果表明，在受TC影响的区域形成了涡度高达0.25 s−1的顺时针旋转涡。在漩涡中心，Chl-a浓度显著上升至0.2 mg·m−3。这凸显了涡旋在促进浮游植物生长方面的关键作用。气旋后观测显示混合层加深，温跃层减弱，屏障层变薄。这些变化共同促进了深层营养物质向表层的运输，促进了浮游植物的生长。此外，涡旋区光合有效辐射（PAR）在2月21日之后显著上升至60 Einstein·m−2·day−1，保持高位，为研究区域的Chl-a华创造了最佳的光照条件。该研究可以提高我们对东澳大利亚TCs与海洋生态系统之间相互作用的理解。

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引用次数: 0

Physical cumulative pressures analysis approach to Good Environmental Status assessment at Central Cantabrian Sea 中坎塔布连海良好环境状况评估的物理累积压力分析方法

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2026.104179

Ángela María Márquez-Reyes , Ulla Fernandez-Arcaya , Antonio Punzón

One of the objectives of the Marine Strategy Framework Directive (MSFD) is to identify, assess, and reduce the cumulative physical pressures on the seafloor to achieve Good Environmental Status (GES). This study aims to characterise the human activities that physically affect seabed integrity and to provide a first integrated assessment of the pressure accumulation in the Central Cantabrian Sea. To this end, spatial data on human activities, their associated seabed pressures, areas of influence, and interactions with benthic habitats were integrated into a unified 0.01° x 0.01° grid to enable cumulative pressure analysis. The results indicate that the Central Cantabrian Sea is intensively pressured: 8.4% of the assessed grid cells are classified as physically lost, while 40.8% are physically disturbed. Activity accumulation occurred mostly along infralittoral habitats, where rocky habitats present experience a high degree of spatial overlap with multiple stressors.

The main source of pressure accumulation arises from the interaction of different bottom contact fishing gears operating along deeper continental shelf and slope (113–644 m depth). In shallower infralittoral zones additional activities such as aquaculture and dredging contribute to the cumulative impact. The Site of Community Importance (SCI) Avilés Canyon System area also showed a high accumulation with up to 3–4 activities per grid cell, mostly related to fisheries. This work provides a methodological basis for assessing cumulative seabed activities causing disturbance and supports the development of spatial management strategies aligned with the objectives of the MSFD.

《海洋战略框架指令》（MSFD）的目标之一是识别、评估和减少海底累积的物理压力，以达到良好的环境状态（GES）。本研究旨在描述对海底完整性产生物理影响的人类活动特征，并首次对坎塔布连海中部的压力积累进行综合评估。为此，关于人类活动、与之相关的海底压力、影响区域以及与底栖生物栖息地相互作用的空间数据被整合到统一的0.01°x 0.01°网格中，以便进行累积压力分析。结果表明，坎塔布连海中部受到强烈的压力：8.4%的评估网格单元被分类为物理损失，40.8%的网格单元被分类为物理扰动。活动积累主要发生在滨海下，在那里岩石生境与多个压力源存在高度的空间重叠。压力积累的主要来源是沿较深大陆架和斜坡（113-644 m深度）作业的不同底接触渔具的相互作用。在较浅的沿海地区，水产养殖和疏浚等额外活动加剧了累积影响。群落重要生境（SCI）的avil峡谷系统区域也表现出较高的积累，每个网格细胞的活动可达3-4个，主要与渔业有关。这项工作为评估造成干扰的累积海底活动提供了方法学基础，并支持制定符合MSFD目标的空间管理战略。

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引用次数: 0

Identifying potential spawning sites and factors underlying the habitat selection of Indian Scad, Decapterus russelli, in the south eastern Arabian Sea during non-summer monsoon periods 在非夏季季风期，确定阿拉伯海东南部印度鲤的潜在产卵地点和潜在的栖息地选择因素

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2026.104186

Kusum Komal Karati , G. Sreerenjima , Sonal Rajendra Kalbande , Ajit Antony

The spawning period and the environment in which the eggs are released are critical in the reproductive success of fishes, and hence studies pertaining to these aspects have garnered wide research interest. The Indian scad, (Decapterus russelli) is one major carangid species that contributes significantly to the marine capture fishery of India. However, limited knowledge of their spawning period and habitat selection constrains formulation of management policies aimed at their sustainable fishery in this region. In the northern Indian Ocean, information on spawning grounds and the peak spawning period of this important species are mostly limited to the summer monsoon period. Thus, the present study specifically aimed to identify their potential spawning sites in the southeastern Arabian Sea during three non-summer monsoon periods (fall, winter and spring seasons). Continuous Underway Fish Egg Sampler (CUFES), an instrument specifically designed for fish egg sampling, was deployed for the first time in this region for effective sampling of fish eggs. Though D. russelli were observed to spawn during all three sampling periods, egg abundance was highest in the winter monsoon period when compared to the other non-summer monsoon periods in the southeastern Arabian Sea. Seasonal variation in abiotic and biotic factors in SEAS had a prominent influence on the spawning habitat selection of D. russelli. The abiotic and biotic variables, which were found to have an important role in the spawning habitat selection, had varying effects along different seasons depending on the closeness of their existing values towards the optimal condition.

产卵期和产卵环境对鱼类的繁殖成功至关重要，因此有关这些方面的研究引起了广泛的研究兴趣。印度鲹（Decapterus russelli）是对印度海洋捕捞渔业有重要贡献的一种主要龙科鱼类。然而，对其产卵期和栖息地选择的了解有限，限制了制定旨在该地区可持续渔业的管理政策。在北印度洋，这一重要物种的产卵地点和产卵高峰期的信息大多局限于夏季季风期。因此，本研究特别旨在确定它们在阿拉伯海东南部三个非夏季季风期（秋季、冬季和春季）的潜在产卵地点。连续航行鱼卵取样器（CUFES）是一种专门为鱼卵取样设计的仪器，首次在该地区部署，以有效取样鱼卵。虽然在所有三个采样期间都观察到D. russelli产卵，但与阿拉伯海东南部的其他非夏季季风期相比，冬季季风期的卵丰度最高。海洋非生物因子和生物因子的季节变化对黄颡鱼产卵生境的选择有显著影响。在产卵生境选择中起重要作用的非生物变量和生物变量在不同季节的影响不同，取决于它们的现有值与最优条件的接近程度。

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引用次数: 0

Modelling the accumulation of 137Cs by Atlantic bluefin tuna (Thunnus thynnus) after a hypothetical nuclear accident in the Northwest Atlantic Ocean 模拟西北大西洋假想核事故后大西洋蓝鳍金枪鱼（Thunnus thynnus）对137Cs的积累

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2026.104180

Carmen Cortés , Raúl Periáñez , Barbara A. Block , Michael R. Castleton , Pablo Cermeño , Simon Dedman

The potential accumulation of radionuclides in migratory fish following nuclear accidents is a concern for marine ecology and human consumption. We developed and applied a Lagrangian numerical model coupled with a four-level food web uptake module to simulate the transport and bioaccumulation of ¹³⁷Cs in Atlantic bluefin tuna (Thunnus thynnus) in the Northwest Atlantic Ocean, following hypothetical Fukushima-like releases from three coastal nuclear power plants in eastern North America. Tuna trajectories were obtained from electronic tagging data, and ¹³⁷Cs transfers from water and prey were modelled daily at each tuna location. Simulations show that even when tuna pass through contaminated water and food patches, the resulting ¹³⁷Cs concentrations in their flesh remain low, with maximum values around 1 Bq/kg wet weight. These concentrations are well below international safety limits and often below typical background levels. The study confirms that the rapid movement of migratory species limits radionuclide uptake, suggesting that tuna consumption would remain safe even in the event of such accidents.

核事故后洄游鱼类体内放射性核素的潜在积累是海洋生态和人类消费的一个问题。我们开发并应用拉格朗日数值模型，结合四级食物网摄取模块，模拟西北大西洋蓝鳍金枪鱼（Thunnus thynnus）体内137Cs的运输和生物积累，假设北美东部三个沿海核电站发生类似福岛的泄漏。通过电子标记数据获得金枪鱼的运动轨迹，并在每个金枪鱼位置模拟每天来自水和猎物的137Cs转移。模拟结果表明，即使金枪鱼经过受污染的水和食物区，其肉中的137Cs浓度仍然很低，最大值约为每公斤湿重1 Bq。这些浓度远低于国际安全限值，而且往往低于典型的背景水平。该研究证实，洄游物种的快速迁徙限制了放射性核素的吸收，这表明即使发生此类事故，食用金枪鱼仍将是安全的。

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引用次数: 0

Water mass influence on the distribution of larval mesopelagic fish (Sternoptychidae) in the South Brazil Bight (23°S-28°S) 南巴西海域（23°S-28°S）水团对中远洋鱼类稚鱼分布的影响

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2026.104185

Gabriel Vilanova, Maria de Lourdes Zani-Teixeira, Mario Katsuragawa, Ulisses Cavalcante dos Santos, Marcelo Dottori, Danilo Augusto Silva, Ilson Carlos Almeida da Silveira, João Pedro Mancio de Amorim, Frederico Pereira Brandini, Cláudia Namiki

Sternoptychidae (hatchetfishes and relatives) are among the most abundant mesopelagic fishes, playing important ecological roles in oceanic ecosystems. Their larvae are a frequent component of ichthyoplankton assemblages, although little is known about their early life stages in the South Brazil Bight (SBB). The present study aimed to analyze the distribution patterns of Sternoptychidae larvae in relation to water mass dynamics in the SBB, a region of intense mesoscale activity. Ichthyoplankton was collected during 2019 austral winter-spring and 2021–2022 summer, using a Multi Plankton Sampler from the surface to 2300 m. Maurolicus stehmanni (pearlside) was the most abundant among the six taxa identified. Most taxa were restricted to slope waters and larvae were recorded on the shelf in association with South Atlantic Central Water (SACW) intrusion. This cross-shelf interaction enables pearlside larvae to be transported onshore and use the shelf as nursery areas. SACW intrusion also broadened Argyropelecus spp. and Valenciennellus tripunctulatus known distributions to include the shelf. Larvae displayed vertical habitat partitioning of the water column, although taxa were mostly associated with SACW. Pearlside larvae presented a preferential vertical position in the Tropical Water-South Atlantic Central Water mixture, suggesting possible feeding areas and retention processes. This study was the first to describe vertical distribution patterns of sternoptychid larvae off the SBB and showed the significance of ichthyoplankton collection in deep waters, which allowed the sampling of rare species, including the first occurrence of larval V. tripunctulatus in the SBB. Stratified sampling was of utmost importance to understand species distribution in relation to the water masses and fronts.

胸鳍鱼科（hatchay）是海洋生态系统中数量最多的中远洋鱼类之一，在海洋生态系统中起着重要的生态作用。它们的幼虫是浮游鱼群的常见组成部分，尽管人们对它们在南巴西湾（SBB）的早期生活阶段知之甚少。本研究旨在分析在中尺度活跃性较强的SBB地区，胸腹蟹科幼虫的分布格局与水质量动力学的关系。在2019年南方冬春和2021-2022年夏季，使用多浮游生物采样器从地表至2300米收集浮游鱼。在已鉴定的6个分类群中，毛竹属（Maurolicus stehmanni）的数量最多。大多数分类群局限于斜坡水域，幼虫在陆架上记录，与南大西洋中部水（SACW）入侵有关。这种跨大陆架的相互作用使珍珠贝幼虫能够被运送到岸上，并将大陆架用作苗圃。SACW的入侵还扩大了Argyropelecus spus和Valenciennellus tripunctulatus的已知分布，使其包括陆架。幼虫在水柱上表现出垂直的生境划分，但分类群多与SACW相关。珠光蛾幼虫在热带水-南大西洋中部水混合物中表现出优先的垂直位置，提示了可能的取食区域和滞留过程。本研究首次描述了SBB胸鳍鲷幼虫的垂直分布格局，揭示了深海浮游鱼类采集的重要意义，从而使珍贵物种得以采样，其中包括首次在SBB中发现的三刺鱼幼虫。分层取样对于了解物种分布与水团和锋面的关系至关重要。

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引用次数: 0

A Bayesian approach to map oceanic structures, with an application to the Gulf Stream 用贝叶斯方法绘制海洋结构图，并应用于墨西哥湾流

IF 2.5 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Marine Systems

Pub Date : 2026-01-01 DOI: 10.1016/j.jmarsys.2025.104175

Alessandro Comunian, Mauro Giudici, Arianna Panzeri

A Bayesian approach is proposed to map position and evolution of oceanic structures. In the simplest formulation, the prior probability density function (PDF), i.e., the probability that a given point at a given time belongs to the considered structure, is modulated through the Bayes theorem by the likelihood and the marginal PDF. The likelihood represents the PDF of the observed data, conditioned on the fact that the examined point belongs to the structure at the examined time. The marginal PDF represents the probability of observing the field data, independently of the fact that the point belongs or not to the structure. A procedure to model prior PDF, likelihood and marginal PDF from observed data and to obtain the posterior PDF, namely the probability that a point belongs to the structure at a given time, conditioned on observed data, is proposed. The procedure is tested to map the Gulf Stream, based on observations of physical properties at the sea surface: temperature (SST), velocity (SSV) and salinity (SSS). The results of a single-variable model, based on SST only, are compared with those obtained from double-variable (SST and SSV) and multiple-variable (SST, SSV, SSS) models. The results show the relevance of data resolution and the importance of the proper modeling of the marginal PDF.

提出了一种贝叶斯方法来绘制海洋构造的位置和演化。在最简单的表述中，先验概率密度函数（PDF），即给定时间点属于所考虑结构的概率，通过贝叶斯定理由似然和边际PDF调制。似然表示观测数据的PDF，其条件是被检测点在被检测时间属于结构。边际PDF表示观测到现场数据的概率，与该点是否属于该结构无关。提出了一种基于观测数据对先验概率分布、似然概率分布和边际概率分布进行建模并获得后验概率分布的方法，即在给定时间点在观测数据条件下属于结构的概率。根据对海洋表面物理特性的观察：温度（SST）、速度（SSV）和盐度（SSS），对该程序进行了测试，以绘制墨西哥湾流的地图。将单变量模型的结果与双变量模型（SST和SSV）和多变量模型（SST、SSV、SSS）的结果进行了比较。结果表明了数据分辨率的相关性和正确建模边缘PDF的重要性。

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引用次数: 0