Journal of Geophysical Research-Oceans最新文献_第5页

Environmental Factors Associated With Fall Phytoplankton Blooms in the Northern Bering and Chukchi Seas 与白令海北部和楚科奇海浮游植物秋季繁殖有关的环境因素

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-19 DOI: 10.1029/2025JC022498

C. B. Gaffey, K. E. Frey, J. Rogan, L. Estes, L. W. Cooper, J. Clement Kinney, J. M. Grebmeier

{"title":"Environmental Factors Associated With Fall Phytoplankton Blooms in the Northern Bering and Chukchi Seas","authors":"C. B. Gaffey, K. E. Frey, J. Rogan, L. Estes, L. W. Cooper, J. Clement Kinney, J. M. Grebmeier","doi":"10.1029/2025JC022498","DOIUrl":"10.1029/2025JC022498","url":null,"abstract":"This study investigates environmental drivers of fall phytoplankton blooms in the Arctic, focusing on the northern Bering and Chukchi seas. Random Forests models were used to analyze covariates of fall phytoplankton blooms from 2013 to 2018, incorporating shipboard, remote sensing, and modeled environmental properties. Four regional models and one comprehensive all-station model considered fall as well as midsummer conditions. Midsummer properties included suspended particulate matter, chlorophyll-a, and the proportion of degraded pheophytin to chlorophyll-a used as a proxy for bloom stage. Open water duration was one of the highest ranked factors in predicting fall blooms. Open water duration also influences the stage of midsummer (July) blooms as indicated by pheophytin proportions, which in turn were the highest-ranked factor for predicting fall bloom events in the Chirikov Basin (northern Bering Sea between St. Lawrence Island and the Bering Strait) and the Chukchi Sea. Wind direction, specifically easterly winds, was an important predictor in the northern Bering Sea. Maximum wind speed ranked highly at stations located within the nutrient-poor Alaska Coastal Current in the Chukchi Sea. However, stormy days, average and maximum wind speeds generally ranked low in importance as a predictor of fall bloom events. Other parameters, including photosynthetic active radiation, modeled nutrient concentrations, mixed layer depth, and time since sea ice breakup date showed strong but regionally varying relationships with fall blooms. Altogether, results from these Random Forests models suggest that high wind events and storms in the absence of sea ice provide an incomplete narrative for initiating fall bloom events.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025JC022498","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Interannual Variability of Lower Circumpolar Deep Water Transport in the North Pacific Influenced by Surface Wind Forcing 受地面风强迫影响的北太平洋下环极深水输送的年际变化

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-19 DOI: 10.1029/2025JC022923

Chengcheng Yang, Xuhua Cheng, Jianhuang Qin

{"title":"Interannual Variability of Lower Circumpolar Deep Water Transport in the North Pacific Influenced by Surface Wind Forcing","authors":"Chengcheng Yang, Xuhua Cheng, Jianhuang Qin","doi":"10.1029/2025JC022923","DOIUrl":"10.1029/2025JC022923","url":null,"abstract":"The deep-ocean circulation in the North Pacific plays a crucial role in redistributing ocean heat and carbon storage, but understanding its low-frequency variability is hindered by the complexity of its pathways, particularly regarding the relationships between different branches and the underlying dynamics. This study investigates the interannual variability of lower circumpolar deep water (LCDW) transport on a basin-wide scale using the Estimating the Circulation and Climate of the Ocean Version 4 Release 4 (ECCO v4r4) data set. Our findings indicate that interannual variations in LCDW transport in the North Pacific are primarily governed by barotropic processes. The first empirical orthogonal function (EOF) mode of interannual variability is characterized by a cyclonic circulation in the northwestern Pacific, while the second mode exhibits a basin-wide cyclonic structure. Utilizing barotropic vorticity equation and regression analysis, it is further demonstrated that EOF1 and EOF2 modes are associated with the spatial pattern of a wind stress curl, which are linked to the El Niño-Southern Oscillation (ENSO) and the Victoria mode, respectively. Thus, despite the lack of direct atmospheric coupling with the deep ocean, the wind-driven ocean bottom pressure anomalies modulate the interannual variability of LCDW transport.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Exploring Submesoscale Processes and Internal Solitary Waves Using SWOT Data in the South China Sea 南海亚中尺度过程与内孤立波的SWOT分析

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-19 DOI: 10.1029/2025JC022700

Enzhao Zhang, Mingfang Miao, Zhiwei Zhang

{"title":"Exploring Submesoscale Processes and Internal Solitary Waves Using SWOT Data in the South China Sea","authors":"Enzhao Zhang, Mingfang Miao, Zhiwei Zhang","doi":"10.1029/2025JC022700","DOIUrl":"10.1029/2025JC022700","url":null,"abstract":"The South China Sea (SCS) is abundant with oceanic fine-scale processes (FPs) that have horizontal scales smaller than 50 km, but their spatial and seasonal characteristics remain insufficiently understood due to the scarcity of high-resolution observations covering large spatial ranges. In this study, FPs in the SCS are systematically explored based on the Surface Water and Ocean Topography (SWOT) satellite mission which provides sea surface height data with kilometer-scale resolution in wide swaths. By defining FP signals as those missed by nadir-looking altimeters but resolved by SWOT, we find that northeastern and western parts of the SCS are two hotspots of FPs. The FPs show larger root-mean-squared sea level anomalies (SLAs) in summer than winter in both regions. By combining independent ocean color remote sensing data, we identify submesoscale processes and internal solitary waves (ISWs) as two typical forms of FPs captured by SWOT. Some submesoscale processes with spatial scales of ∼20 km and SLA amplitudes of 2.0–8.0 cm are demonstrated to be submesoscale anticyclonic (cyclonic) eddies, which have positive (negative) SLAs and are accompanied by lower (higher) chlorophyll-a concentrations. With respect to the ISWs, they mainly occur in the northeastern SCS originating from the Luzon Strait, and propagate westward and southwestward. ISWs occur more frequently in summer than winter. Their SLA amplitudes range from 5 to 51 cm and generally decrease with the shallowing water depths. These results demonstrate that SWOT data have a good application prospect for studying the characteristics and dynamics of FPs in the SCS.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Global Observations of the Response of the Upper Ocean to Tropical Cyclones Based on Argo Profiles 基于Argo剖面的全球上层海洋对热带气旋响应的观测

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-16 DOI: 10.1029/2025JC022522

Chao Han, Melissa Bowen, Philip Sutton

{"title":"Global Observations of the Response of the Upper Ocean to Tropical Cyclones Based on Argo Profiles","authors":"Chao Han, Melissa Bowen, Philip Sutton","doi":"10.1029/2025JC022522","DOIUrl":"10.1029/2025JC022522","url":null,"abstract":"The upper ocean's temperature and salinity responses to Tropical Cyclones (TC) between 10˚—30° latitude on both sides of the Equator are observed with Argo float profile pairs between 2001 and 2024. The ocean response is found using across-track composites, generated by normalizing the distance between the profile and cyclone track by the 34-knot wind radius (R34) of each TC. Cooling of up to 1.2°C in the initial mixed layer (ML) extends from the TC center to about 3 R34 and is stronger on the side of the TC track with stronger winds. Subsurface warming between 40 and 80 m depth is observed between 0.5 and 3 R34 on the side of the track with stronger winds. Strong cooling is observed in a distinct core directly under the TC path (between ±0.5 R34), reaching from the surface to 1,000 m depth with upward isopycnal displacements of up to 18 m. Surface cooling and subsurface warming at the base of the ML are positively correlated with TC wind stress on the ocean, quantified by the Local Wind Power Dissipation index (PDiL), and negatively correlated with the energy required to destratify the upper ocean, defined by the Cooling Inhibition index (CI). Subsurface warming is common with low CI but is not observed with high CI. The typical cross-track thermal response between 30 and 150 m depth is heat loss, but the subsurface ocean can gain heat in low CI cases.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025JC022522","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Wave Attenuation by Restored Coral Reef Canopies: Implications for Coastal Protection 珊瑚礁冠层恢复后的波浪衰减：对海岸保护的启示

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-16 DOI: 10.1029/2025JC022854

Justin Geldard, Ryan J. Lowe, Marco Ghisalberti, Scott Draper

{"title":"Wave Attenuation by Restored Coral Reef Canopies: Implications for Coastal Protection","authors":"Justin Geldard, Ryan J. Lowe, Marco Ghisalberti, Scott Draper","doi":"10.1029/2025JC022854","DOIUrl":"10.1029/2025JC022854","url":null,"abstract":"The significant bottom roughness of coral reefs plays a vital role in mitigating wave-driven hazards along many tropical coastlines. As reef-building corals decline globally, reef restoration has been increasingly used to re-establish reef structure that influences wave dissipation. This study investigated the hydrodynamic processes that govern wave attenuation by restored reef canopies created using a common approach involving modular structures populated with coral colonies, based on the Mars Assisted Reef Restoration System. Three different coral covers were tested in a wave flume under various wave conditions and water depths typical of coral reef flats. We found that wave attenuation increased significantly with coral cover, driven by how specific attributes of the coral geometry controlled in-canopy flows and hydrodynamic forces. Two independent measures of wave energy dissipation generated by the reef were compared: (a) the rate of work done by hydrodynamic forces (calculated from force-velocity timeseries measurements), and (b) the observed wave height attenuation across the reef. These measures agreed well over the different coral covers and wave conditions studied, demonstrating that accurate quantification of in-canopy drag forces and flows enables reliable prediction of wave dissipation. The validated predictive framework was then used to evaluate the effectiveness of coral reef restoration under varying wave conditions and coral covers, showing that well-designed reef canopies can dissipate more than 50% of the incoming wave energy under typical reef flat conditions. These findings offer new insights into the hydrodynamic processes that govern wave attenuation by restored coral reef canopies, highlighting the potential of restoration to mitigate coastal hazard risk.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025JC022854","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Global Water Cycle Pattern Amplification: Contributing Factors and Mechanisms 全球水循环格局放大：影响因素和机制

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-16 DOI: 10.1029/2024JC022278

Yuxuan Lyu, Nathaniel L. Bindoff, Sandeep Mohapatra, Saurabh Rathore, Helen E. Phillips

{"title":"Global Water Cycle Pattern Amplification: Contributing Factors and Mechanisms","authors":"Yuxuan Lyu, Nathaniel L. Bindoff, Sandeep Mohapatra, Saurabh Rathore, Helen E. Phillips","doi":"10.1029/2024JC022278","DOIUrl":"10.1029/2024JC022278","url":null,"abstract":"Under climate change, both the global water cycle (evaporation minus precipitation) and mixed layer salinity exhibit a pattern amplification characterized by the “rich get richer and poor get poorer.” However, the contributions of horizontal and vertical oceanic processes to these patterns remain poorly understood. Using various ocean data products (1979–2018), this study quantifies the roles of horizontal and vertical advection, diffusion, and vertical entrainment in shaping mixed layer salinity distributions through salinity budget analysis. Our findings suggest that horizontal advection mitigates local salinity buildup in evaporation-dominated subtropical regions, whereas vertical processes transfer excess freshwater into the deeper ocean in precipitation-dominated areas. These mechanisms collectively regulate the freshwater flux imprint within the mixed layer, driving distinct salinity patterns across ocean basins and salinity classes. Furthermore, we estimate global freshwater transport within and beyond the mixed layer, advancing our understanding of the relationship between the global water cycle and ocean salinity dynamics. These findings provide insights into the physical processes underpinning salinity amplification and its evolution by human induced climate change.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JC022278","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

PIV Measurements of Turbulent Water Flows Over Fixed Low-Angle Compound Dunes Under Reversing Currents 反向流作用下固定低角复合沙丘上湍流水流的PIV测量

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-15 DOI: 10.1029/2025JC022418

Gaetano Porcile, Dominique Mouazé, Pierre Weill, Aurélien Gangloff, Anne-Claire Bennis

{"title":"PIV Measurements of Turbulent Water Flows Over Fixed Low-Angle Compound Dunes Under Reversing Currents","authors":"Gaetano Porcile, Dominique Mouazé, Pierre Weill, Aurélien Gangloff, Anne-Claire Bennis","doi":"10.1029/2025JC022418","DOIUrl":"10.1029/2025JC022418","url":null,"abstract":"This study investigates the influence of surface roughness, current intensity, and direction on tidal flows over asymmetric low-angle dunes using high-resolution particle image velocimetry in a laboratory flume. Experimental measurements reveal that, consistent with previous studies, low-angle dunes generate substantial turbulence through flow expansion and shear, despite inducing only intermittent flow separation. Enhanced surface roughness and current intensity significantly increase turbulence, leading to permanent flow separation, akin to that observed over angle-of-repose dunes. When the flow direction opposes the dune's morphological orientation, weaker turbulent stresses are observed; however, flow expansion at the crest generates sufficient turbulence that persists downstream, impacting the flow field over the next dune. Hydraulic roughness parameters estimated from single and double log-law velocity profiles offer a quantitative assessment of the variability of form roughness along the dunes during both ebb and flood tides. Ejection-sweep cycles dominate turbulent flow in both aligned and opposing flow conditions, albeit with distinct spatial distributions. This study highlights crucial aspects of the interaction between dune morphology and reversing tidal currents, demonstrating that asymmetric low-angle dunes can induce significant form roughness across the different tidal phases. These findings have important implications for flow resistance and sediment transport in tidal environments.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Tidal Modulation of Two Interacting Mid-Field Bulges of the Pearl River Plume 珠江羽流两个相互作用的中场凸起的潮汐调制

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-15 DOI: 10.1029/2025JC022588

Pengpeng Hu, Guang Zhang, Suan Hu, Heng Zhang, Wenping Gong

{"title":"Tidal Modulation of Two Interacting Mid-Field Bulges of the Pearl River Plume","authors":"Pengpeng Hu, Guang Zhang, Suan Hu, Heng Zhang, Wenping Gong","doi":"10.1029/2025JC022588","DOIUrl":"10.1029/2025JC022588","url":null,"abstract":"River plumes are important pathways for transporting terrestrial materials to coastal oceans. Utilizing the Regional Ocean Modeling System, which has been well-validated against cruise observations and satellite data, we investigated the tidal modulation of the mid-field bulge in the Pearl River Estuary (PRE). Our findings reveal that the Pearl River plume exhibits two interacting bulges, forming a distinctive indented structure (i.e., isohalines curving toward shore) with periodic spring-neap tidal variation which is related to the tidal modulation of freshwater transport at the PRE mouth. Freshwater transport at the PRE mouth is primarily through two pathways: the West Shoal and the Lantau Channel. The Modaomen Estuary (adjacent to the PRE on its western side) and the West Shoal exhibit sustained downstream freshwater transport, forming a bulge in the west side of the PRE (the western bulge), while the freshwater within the Lantau Channel undergoes periodic anticyclonic motion modulated by tides, leading to the formation of a periodic indented structure. This process is governed by barotropic pressure gradient forces, manifesting as temporal variations in surface height gradients driven by freshwater accumulation. Furthermore, tidal forcing drives the fortnightly cyclic detachment of the bulge from the Lantau Channel (the eastern bulge) through its regulation on surface salinity distribution and vertical mixing intensity. Wind forcing suppresses the formation of this periodic indented structure in the plume by modulating freshwater flux. This study enhances our understanding of the periodic spring-neap tidal variation of the combined bulge and deepens our comprehension of the river plume's mid-field dynamics.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dual Coastal Downwelling Belts Over the Northwestern South China Sea in Winter 冬季南海西北部双海岸下沉带

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-11 DOI: 10.1029/2025JC022771

Xinmei Gong, Yeqiang Shu, Zhiqiang Liu, Tingting Zu, Danian Liu, Xuekun Shang, Binbin Guo

{"title":"Dual Coastal Downwelling Belts Over the Northwestern South China Sea in Winter","authors":"Xinmei Gong, Yeqiang Shu, Zhiqiang Liu, Tingting Zu, Danian Liu, Xuekun Shang, Binbin Guo","doi":"10.1029/2025JC022771","DOIUrl":"10.1029/2025JC022771","url":null,"abstract":"This study explores a unique dual coastal downwelling belt in the northwestern South China Sea (NWSCS) during the winter northeasterly monsoon season. Employing both in situ observations and numerical simulations, we delineate how the topography of the Leizhou Peninsula and Hainan Island fundamentally shapes this phenomenon. The study reveals a westward alongshore current, propelled by downwelling-favorable winds and a buoyancy-driven river plume, which fosters seawater convergence on the western shelf. This process establishes a northeastward-directed pressure gradient force that triggers a stronger offshore flow than that driven by the northeasterly monsoon winds alone, as described by Ekman dynamics. On the inner shelf, warmer seawater driven by the northeasterly winds converges with colder, fresher coastal water near the 30-m isobath, forming a pronounced downwelling belt. In contrast, on the outer shelf, a landward reduction in the strength of the onshore current, which is counterbalanced by a landward enhancement of the eastward alongshore pressure gradient force with alongshore wind stress and the eastward Coriolis force, leads to water convergence and subsequent downwelling at the ∼60 m isobath. This dual-downwelling-belt structure, underscored by its dynamic mechanisms, not only deviates from traditional coastal downwelling theories but also highlights the dominant role of regional topography in modulating the downwelling dynamics in the NWSCS.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A Unified, Data-Informed Model for Shoreline Evolution Due To Longshore and Cross-Shore Processes 一个统一的、基于数据的滨岸和跨岸过程岸线演变模型

IF 3.4 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-09-10 DOI: 10.1029/2025JC022379

M. A. Davidson, E. Hunt, N. G. Valiente

{"title":"A Unified, Data-Informed Model for Shoreline Evolution Due To Longshore and Cross-Shore Processes","authors":"M. A. Davidson, E. Hunt, N. G. Valiente","doi":"10.1029/2025JC022379","DOIUrl":"10.1029/2025JC022379","url":null,"abstract":"Due partially to a changing global climate, there is an increasing need to develop a modeling approach capable of providing warnings of coastal evolution, including erosion at storm, interannual, and decadal timescales and in complex coastal settings. This research presents a reduced-complexity model with a common approach to predicting shoreline change due to cross-shore and longshore processes. The model architecture is designed to be flexible and data-informed, incorporating an extended Kalman filter (eKF) for the assimilation of field measurements of shoreline change. Depending on the values of the optimized model-free parameters resulting from the eKF assimilation, the longshore and cross-shore shoreline model components can resemble either new, established, or hybrid versions of previously reported models. Thus, the model also provides new insight into the dynamics of shoreline change. The model is tested and demonstrated via a series of numerical tests and applied to field data collected at a complex coastal setting, showing good performance with R.M.S. shoreline prediction errors of <6 m. The eKF data assimilation suggests that a hybrid cross-shore transport model, combining the characteristics of two established semiempirical models and a new disequilibrium longshore transport model, effectively describes the shoreline evolution at the swash-aligned field site. The computational efficiency, stability, and versatility of the ForCE-LX model provides a promising tool for the prediction of shoreline evolution on time-scales of days to decades, in widespread coastal settings.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 9","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025JC022379","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145022004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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