Journal of Geophysical Research-Oceans最新文献_第7页

Extensive and Prolonged Cooling Effects of Tropical Storm Pabuk on the Southern South China Sea 热带风暴帕布对南海南部的大范围和长时间降温效应

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-13 DOI: 10.1029/2024JC022109

Tana, Yue Fang, Bin Xiao, Baochao Liu, Yanliang Liu, Huiwu Wang, Azizan Abu Samah, Mohd Fadzil Mohd Akhir, Wee Cheah, Qinglei Su, Chao Li, Chunlin Ning

{"title":"Extensive and Prolonged Cooling Effects of Tropical Storm Pabuk on the Southern South China Sea","authors":"Tana, Yue Fang, Bin Xiao, Baochao Liu, Yanliang Liu, Huiwu Wang, Azizan Abu Samah, Mohd Fadzil Mohd Akhir, Wee Cheah, Qinglei Su, Chao Li, Chunlin Ning","doi":"10.1029/2024JC022109","DOIUrl":"https://doi.org/10.1029/2024JC022109","url":null,"abstract":"In January 2019, Tropical Storm Pabuk traversed the southern South China Sea, inducing significant upper-ocean cooling with a maximum temperature drop of 3.8°C lasting over three weeks. As the storm passed directly over the Bailong marine meteorological buoy (5.843°N, 104.208°E), high-frequency oceanic and atmospheric observations captured its immediate impact, providing valuable insights into air-sea interactions during extreme weather events. Analysis of buoy data and FIO-COM simulations reveals that Pabuk triggered a rapid sea surface temperature (SST) decline, initially driven by wind-driven vertical mixing and heat flux loss, followed by prolonged cooling sustained by cold advection. The latter was primarily controlled by changes in the Vietnam Coastal Current (VCC), whose intensity and structure were significantly altered by the storm. Additionally, near-inertial oscillations (NIOs) enhanced subsurface mixing contributing to the persistence of cooling, whereas winter monsoon winds further influenced post-storm SST evolution. The cooling response exhibited strong spatial variability: in deep offshore regions, vertical mixing dominated, entraining colder subsurface waters into the mixed layer; along the Vietnam coastal shelf, cold advection played a leading role; in shallow waters, heat flux loss initiated cooling with residual cold advection and NIO-driven subsurface mixing extending SST anomalies. These findings underscore the heightened sensitivity of shelf seas to tropical storms, where coastal currents, wind-driven mixing, and bathymetric constraints critically influence SST evolution. A more accurate representation of these localized processes in oceanographic and climate models is essential for improving storm impact assessments and upper-ocean thermal predictions.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JC022109","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273511","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

Observations of Breaking Wave Dissipation and Their Relationship to Atmosphere-Ocean Energy Transfer 破碎波耗散观测及其与大气-海洋能量传递的关系

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-12 DOI: 10.1029/2024JC022130

L. Hogan, C. J. Zappa, A. Cifuentes-Lorenzen, J. B. Edson, J. O’Donnell, D. S. Ullman

{"title":"Observations of Breaking Wave Dissipation and Their Relationship to Atmosphere-Ocean Energy Transfer","authors":"L. Hogan, C. J. Zappa, A. Cifuentes-Lorenzen, J. B. Edson, J. O’Donnell, D. S. Ullman","doi":"10.1029/2024JC022130","DOIUrl":"https://doi.org/10.1029/2024JC022130","url":null,"abstract":"Energy is transferred from the atmosphere to the ocean primarily through ocean surface waves, and the majority is dissipated locally in the near-surface ocean. Observations of turbulent kinetic energy (TKE) in the upper ocean have shown dissipation rates exceeding law-of-the-wall theory by an order of magnitude. The excess near-surface ocean TKE dissipation rate is thought to be driven primarily by wave breaking, which limits wave growth and transfers energy from the surface wave field to the wave-affected layer of the ocean. Here, the statistical properties of breaking wave dynamics in a coastal area are extracted from visible imagery and used to estimate TKE dissipation rates due to breaking waves. The statistical properties of whitecap dynamics are quantified with Λ(c), a distribution of total whitecap crest length per unit area as a function of crest speed, and used to compute energy dissipation by breaking waves, Sds. Sds approximately balances elevated subsurface dissipation in young seas but accounts for only a fraction of subsurface dissipation in older seas. The wind energy input is estimated from wave spectra from polarimetric imagery and laser altimetry. Sds balances the wind energy input except under high winds. Λ(c)-derived estimates of TKE dissipation rates by breaking waves compare well with the atmospheric deficit in TKE dissipation, a measure of energy input to the wave field (Cifuentes-Lorenzen et al., 2024). These results tie the observed atmospheric dissipation deficit and enhancement in subsurface TKE dissipation to wave driven energy transport, constraining the TKE dissipation budget near the air-sea interface.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JC022130","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264628","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

Role of the Indian Ocean Wind-Driven Dynamics in the Indonesian Throughflow Variability 印度洋风动力在印尼通流变异性中的作用

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-12 DOI: 10.1029/2025JC022503

Rui Li, Yuanlong Li, Yilong Lyu, Janet Sprintall, Fan Wang

{"title":"Role of the Indian Ocean Wind-Driven Dynamics in the Indonesian Throughflow Variability","authors":"Rui Li, Yuanlong Li, Yilong Lyu, Janet Sprintall, Fan Wang","doi":"10.1029/2025JC022503","DOIUrl":"https://doi.org/10.1029/2025JC022503","url":null,"abstract":"The Indonesian Throughflow (ITF) regulates heat and freshwater distributions over the Indo-Pacific Oceans and fundamentally affects the climate. The past decade has witnessed acute interannual variations in the volume transport within the Makassar Strait—the main ITF inflow passage—such as a decrease of ∼4 Sv (1 Sv ≡ 106 m3 s−1) in 2015–2016 boreal winter and an enhancement of ∼3 Sv in 2017 autumn, relative to a mean transport of ∼12 Sv. The Pacific Ocean dynamics, dictated largely by El Niño-Southern Oscillation (ENSO), cannot fully explain these variations, and a quantitative understanding of the Indian Ocean (IO) dynamics involved in the ITF transport variability remains lacking. Here, by performing regional forcing experiments with a 0.1° ocean general circulation model, we reveal that the wind-driven IO dynamics have operated as a buffering effect for ∼56% of the time and a reinforcing effect for ∼44% of the time during the past decade. Notably, the IO dynamics buffered the weakened ITF by ∼2 Sv in 2015–2016 winter and contributed to the enhanced ITF by ∼0.5 Sv in 2017 autumn. The buffering effect of IO winds is commonly seen during strong ENSO events, while the reinforcing effect arises from Indian Ocean Dipole (IOD) events independent of ENSO. Our study aids in the prediction of the ITF strength under the amplifying ENSO and IOD variabilities expected in a warming climate.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264626","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

Diagnosing Regional Sea Level Change Over the Altimeter Era 诊断高度计时代的区域海平面变化

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-10 DOI: 10.1029/2024JC022100

Kristopher B. Karnauskas, R. Steven Nerem, John T. Fasullo, Ashley Bellas-Manley, Philip R. Thompson, Sloan Coats, Don P. Chambers, Benjamin D. Hamlington

{"title":"Diagnosing Regional Sea Level Change Over the Altimeter Era","authors":"Kristopher B. Karnauskas, R. Steven Nerem, John T. Fasullo, Ashley Bellas-Manley, Philip R. Thompson, Sloan Coats, Don P. Chambers, Benjamin D. Hamlington","doi":"10.1029/2024JC022100","DOIUrl":"https://doi.org/10.1029/2024JC022100","url":null,"abstract":"Since 1993, satellite altimeters have been mapping sea level changes globally, revealing both the global mean rate and detailed patterns of regional variations. The global mean rate is well studied, closely linked to global energy and water cycles, while regional patterns are influenced by a complex mix of internal climate dynamics and external factors like greenhouse gases and aerosols. Yet, a synthesis of these regional patterns using a comprehensive diagnostic approach has been lacking. Our research addresses this gap by integrating oceanic and atmospheric observations with large ensembles of state-of-the-art global climate models. This approach sheds new light upon the mechanisms behind basin-scale sea level patterns worldwide. A key finding is the dominant influence of wind forcing, particularly Ekman and Sverdrup dynamics, in shaping sea level changes from the tropics to higher latitudes. We find that the pattern of sea level rise since 1993 is primarily driven by wind-induced changes in ocean circulation, which can affect sea surface height through ocean mass and heat distribution. Interestingly, these wind-driven changes are not just products of internal climate variability; most of the observed patterns are recovered by global climate model projections driven by historical anthropogenic forcings, and single-forcing experiments provide further insight into which forcings are responsible for various features in the satellite altimetry record. Understanding the drivers of regional sea level rise, including differentiating anthropogenic signals from natural variability, is essential for effectively adapting to climate change impacts on global infrastructure and society.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244716","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

Diagnosis of Ocean Near-Surface Horizontal Momentum Balance From Pre-SWOT Altimetric Data, Drifter Trajectories, and Wind Reanalysis 从swot前测高数据、漂移轨迹和风再分析诊断海洋近地表水平动量平衡

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-10 DOI: 10.1029/2024JC021637

Margot Demol, Aurélien L. Ponte, Pierre Garreau, Jean-François Piollé, Clément Ubelmann, Nicolas Rascle

{"title":"Diagnosis of Ocean Near-Surface Horizontal Momentum Balance From Pre-SWOT Altimetric Data, Drifter Trajectories, and Wind Reanalysis","authors":"Margot Demol, Aurélien L. Ponte, Pierre Garreau, Jean-François Piollé, Clément Ubelmann, Nicolas Rascle","doi":"10.1029/2024JC021637","DOIUrl":"https://doi.org/10.1029/2024JC021637","url":null,"abstract":"Along-track and gridded altimetric observations of sea level are colocated and combined with data from drifter observations and wind reanalysis to reconstruct global instantaneous near-surface horizontal momentum balance. This reconstruction includes not only geostrophic terms but also Lagrangian accelerative terms and turbulent stress terms. The methodology developed quantifies the degree of closure, distinguishes statistically balanced components from errors and estimates compensation between pairs of terms. The links between statistically derived closure diagnoses and dynamical ones are established. Overall, the variance of the residual acceleration is about 20% of the sum of individual acceleration variances. We carry out a detailed exploration of the misclosure, which is dominated by unbalanced variance in drifter observations (resolution mismatch accounts for 41% of the total error) followed by instrumental and spatial colocation errors. Except for the turbulent stress term, errors are sufficiently small to ensure safe interpretation of statistically derived balanced contributions as dynamical ones. Although geostrophy is the leading order equilibrium, ageostrophic contributions associated with nonlinear balanced motions, internal tides, and near-inertial waves account for one third of the global balanced acceleration variance. Momentum balance reconstructions and the methodology developed here for that purpose hold promise for validating Surface Water Ocean Topography sea level observations, for quantifying our ability to estimate the ocean circulation from these observations, and for improving our understanding of ocean near-surface dynamics.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JC021637","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244826","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

Impact of El Niño-Southern Oscillation on the Alkalinity and Salinity of a Coral Reef Lagoon in the Equatorial Pacific—Observations and a Model El Niño-Southern振荡对赤道太平洋珊瑚礁泻湖碱度和盐度的影响——观测和模式

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-10 DOI: 10.1029/2024JC021843

Steven J. Lentz, Anne L. Cohen, Nathaniel R. Mollica, Michael Fox, Weifeng (Gordon) Zhang, Phadtaya Poemnamthip, Daniel C. McCorkle

{"title":"Impact of El Niño-Southern Oscillation on the Alkalinity and Salinity of a Coral Reef Lagoon in the Equatorial Pacific—Observations and a Model","authors":"Steven J. Lentz, Anne L. Cohen, Nathaniel R. Mollica, Michael Fox, Weifeng (Gordon) Zhang, Phadtaya Poemnamthip, Daniel C. McCorkle","doi":"10.1029/2024JC021843","DOIUrl":"https://doi.org/10.1029/2024JC021843","url":null,"abstract":"The impacts of El Niño-Southern Oscillation (ENSO) on salinity and alkalinity in an equatorial coral reef lagoon (Kanton) are investigated using water samples collected in three non-El Niño years (1973, 2012, and 2018) and one El Niño year (2015). A one-dimensional, advective-diffusive model is developed to aid in the interpretation of the sparse observations and make estimates of net ecosystem calcification (NEC) rates. The Kanton lagoon experiences extreme salinity and alkalinity variations driven by ENSO variations in precipitation. During the non-El Niño years, salinity increases from the ocean (35.5 psu) to the back of the lagoon (38 psu) because evaporation exceeds precipitation, and water resides in the back of the lagoon for ∼180 days. Early in the 2015–2016 El Niño, the back of the lagoon is only ∼1 psu saltier than the ocean because precipitation had begun to exceed evaporation. The model suggests that during El Niño events, when precipitation substantially exceeds evaporation, the back of the lagoon is less salty than the ocean (30–32 psu). Alkalinity variations in the lagoon are primarily due to dilution or concentration driven by the ENSO variations in precipitation and NEC that causes an alkalinity deficit of ∼250 μmol/kg in the back of the lagoon. The estimated NEC rate in 2015 is ∼25% lower (4.1 mmol/day) than in the non-El Niño years (5.3–5. 7 mmol/day). The NEC rates and coral cover measurements indicate that the Kanton lagoon has recovered from the complete loss of coral cover during the 2002–2003 El Niño.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244827","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

Salt Intrusion Affected by Large-Scale Human Interventions and Sea Level Rise: A 3D Modeling Study of an Engineered Estuary 大规模人为干预和海平面上升对盐入侵的影响：工程河口的三维模型研究

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-07 DOI: 10.1029/2025JC022504

Rutger W. A. Siemes, Trang Minh Duong, Bas W. Borsje, Suzanne J. M. H. Hulscher

{"title":"Salt Intrusion Affected by Large-Scale Human Interventions and Sea Level Rise: A 3D Modeling Study of an Engineered Estuary","authors":"Rutger W. A. Siemes, Trang Minh Duong, Bas W. Borsje, Suzanne J. M. H. Hulscher","doi":"10.1029/2025JC022504","DOIUrl":"https://doi.org/10.1029/2025JC022504","url":null,"abstract":"Estuaries are heavily modified for human use while also being susceptible to sea level rise (SLR), changing estuarine geometries worldwide. In these estuaries, salt water intrudes inland, limiting freshwater availability, particularly during storms or low discharge periods. This paper studies how salt intrusion is influenced by three geometric changes that are prominent in estuaries worldwide in isolation and in combination: (a) channel depth, as channels are often dredged to improve port navigability, (b) intertidal wetland width, representing intertidal reclamation or restoration, and (c) lowering of the intertidal area due to SLR. A 3D schematized process-based model was employed (Delft3D-FM), reflecting conditions in the Rotterdam Waterway, the Netherlands. Salt intrusion lengths increased with channel depth, and the stratification generally increased with channel depth and intertidal area. However, results show that the latter dependency diminishes with larger intertidal areas, a novel finding. The salt intrusion length responds ambiguously to increasing intertidal wetland area, attributed to the balance between tidal flow and estuarine circulation flow: increasing intertidal areas, or lowering their elevation due to SLR, increases the tidal flow velocity amplitude as the tidal prism increases. This in turn suppresses the estuarine circulation flow. Consequently, the salt intrusion length decreases in strongly stratified estuaries while the salt intrusion length increases in well-mixed estuaries. In between these extremes, processes balance out and intertidal area do not influence the salt intrusion length. The findings how increases in tidal flow velocities, caused by intertidal areas, influences salt intrusion processes is novel.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2025JC022504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237302","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

Distinguishing the Isotopic Signals of Nitrate Assimilation and Denitrification Along the GEOTRACES GP15 Pacific Meridional Transect GEOTRACES GP15太平洋经向样带硝酸盐同化和反硝化的同位素信号识别

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-05 DOI: 10.1029/2024JC022084

Dario Marconi, Daniel M. Sigman, Karen L. Casciotti, Rian M. Lawrence, Wentao Wang, Sergey Oleynik, Alfredo Martínez-García

{"title":"Distinguishing the Isotopic Signals of Nitrate Assimilation and Denitrification Along the GEOTRACES GP15 Pacific Meridional Transect","authors":"Dario Marconi, Daniel M. Sigman, Karen L. Casciotti, Rian M. Lawrence, Wentao Wang, Sergey Oleynik, Alfredo Martínez-García","doi":"10.1029/2024JC022084","DOIUrl":"https://doi.org/10.1029/2024JC022084","url":null,"abstract":"The biogeochemical processes shaping the fluxes of nitrogen (N) in the tropical to subarctic Pacific are illuminated by nitrate isotope ratios (δ15N and δ18O) along the GEOTRACES GP15 section. In the equatorial and tropical Pacific, nitrate δ15N and δ18O are 2–4‰ higher in the thermocline than in deeper waters. This widespread elevation is driven by both nitrate assimilation in Southern Ocean surface waters and denitrification in the eastern tropical Pacific. In addition to this, a poleward increase in the δ15N of surface nitrate from the Equator to 10°S is generated by the progressive consumption of nitrate upwelled at the Equator and transported southward. This process leads to increases in the δ15N of phytoplankton biomass and a strong meridional nitrate isotopic gradient in the thermocline due to regeneration of sinking N. North of the Equator, an analogous gradient is barely detectable due to weaker northward flow and a compressed spatial scale for nitrate drawdown. By contrast, between 5°N and 40°N, the nitrate isotope gradients are dominated by the processes driving the oceanic fixed N budget: denitrification and N2 fixation. High-δ15N and -δ18O nitrate in the tropics is advected from the oxygen deficient zone where denitrification occurs, whereas in the adjacent subtropics, low-δ15N thermocline nitrate suggests a response by N2 fixation that is not observed in the south. The asymmetry of the north and south tropical Pacific gradients in thermocline nitrate isotopes has implications for efforts to reconstruct the N cycle in the past.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JC022084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220071","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

Oxygen Minimum-Zone Expansion Controls Critical Metal Enrichment and Growth Rates in a Ferromanganese Crust From the Central Pacific Ocean 氧最小带扩张控制了中太平洋锰铁地壳中临界金属富集和生长速率

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-04 DOI: 10.1029/2025JC022450

Jieqi Xing, Yinan Deng, Jiangbo Ren, James R. Hein, Haiyang Xian, Long Li, Xiaodong Jiang, Yiping Yang, Gaowen He, Haijun Qiu, Jianxi Zhu

{"title":"Oxygen Minimum-Zone Expansion Controls Critical Metal Enrichment and Growth Rates in a Ferromanganese Crust From the Central Pacific Ocean","authors":"Jieqi Xing, Yinan Deng, Jiangbo Ren, James R. Hein, Haiyang Xian, Long Li, Xiaodong Jiang, Yiping Yang, Gaowen He, Haijun Qiu, Jianxi Zhu","doi":"10.1029/2025JC022450","DOIUrl":"https://doi.org/10.1029/2025JC022450","url":null,"abstract":"Hydrogenetic ferromanganese crusts (FMCs) rich in critical metals [for example, cobalt (Co), nickel (Ni), and rare-earth elements plus yttrium (REY)] are known as promising mineral resources for the transition to a net-zero carbon emission future. The oxygen minimum zone (OMZ) has an important influence on the formation of FMCs, but its controlling mechanism for the enrichment of critical metals in FMCs is poorly constrained, hindering a fuller understanding of and exploration for critical metal-rich FMCs. The studied FMC (∼2,000 m depth) collected just below the oxygen minimum zone (OMZ; ∼300–1,000 m depth) in the central Pacific Ocean records the OMZ expansion during FMC formation; key evidence of this is changes in the size of the positive Ce anomaly and positive shifts in δ15N values. Our data indicate that OMZ expansion reduces FMCs growth rates over time, with texture transitions from dendritic to botryoidal. The OMZ expansion contributes to an increase in Mn oxides with Co and Ni enrichment and a decrease in the Fe oxyhydroxides and REY content. Our findings underscore the pivotal role of global OMZ expansion in influencing the growth dynamics of FMCs and the accumulation of critical metals, which is crucial for understanding the enrichment and cycling of critical metals in the deep ocean.","PeriodicalId":54340,"journal":{"name":"Journal of Geophysical Research-Oceans","volume":"130 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213815","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

Mesoscale Ocean Processes: The Critical Role of Stratification in the Icelandic Region 中尺度海洋过程：冰岛地区分层的关键作用

IF 3.3 2区地球科学

Journal of Geophysical Research-Oceans Pub Date : 2025-06-03 DOI: 10.1029/2025JC022664

Charly de Marez, Clara R. Vives, Esther Portela Rodriguez, Angel Ruiz-Angulo

引用次数: 0