Anmerkung: Intro -- Series Preface -- Preface -- Contents -- Introduction to the Chemical Oceanography of Frontal Zones -- 1 Large-Scale, Persistent Nutrient Fronts of the World Ocean: Impacts on Biogeochemistry [1] -- 2 The Pacific-Atlantic Front in the East Siberian Sea of the Arctic Ocean [2] -- 3 Major Nutrient Fronts in the Northeastern Atlantic: From the Subpolar Gyre to Adjacent Shelves [3] -- 4 Fronts in the Baltic Sea: A Review with a Focus on Its North-Eastern Part [4] -- 5 The Kuroshio Nutrient Stream: Where Diapycnal Mixing Matters [5] -- 6 Front-Driven Physical-Biogeochemical-Ecological Interactions in the Yellow Sea Large Marine Ecosystem [6] -- 7 Colored Dissolved Organic Matter in Frontal Zones [7] -- 8 Contamination by Persistent Organic Pollutants and Related Compounds in Deep-Sea Ecosystems Along Frontal Zones Around Japan... -- 9 Dynamics of Transport, Accumulation, and Export of Plastics at Oceanic Fronts [9] -- 10 Lagrangian Methods for Visualizing and Assessing Frontal Dynamics of Floating Marine Litter with a Focus on Tidal Basins [1... -- References -- Large-Scale, Persistent Nutrient Fronts of the World Ocean: Impacts on Biogeochemistry -- 1 Introduction -- 2 A Description of the Ocean´s Biogeochemical Fronts -- 2.1 The Edges of Oxygen Minimum Zones -- 2.2 Subtropical-Subpolar Gyre Boundaries -- 2.2.1 The Kuroshio -- 2.2.2 The Gulf Stream -- 2.3 Biogeochemical Fronts of the Southern Ocean -- 2.3.1 The Southern ACC Front (SACCF) -- 2.3.2 The Antarctic Polar Front (APF) -- 2.3.3 The Subantarctic Front (SAF) -- 2.3.4 The Subtropical Frontal Zone (STFZ) -- 3 The Fronts of the ACC and Their Role in Nutrient and Carbon Return Pathways from the Deep Ocean -- 4 A Closer Look at Cross-Frontal Exchange -- 4.1 Fronts as Barriers: Reviewing Results from Kinematic Analysis -- 4.2 Fronts as Regions of Exchange: Ekman Fluxes. , 4.3 Ekman Fluxes in the Context of Other Nutrient Supply and Demand Terms -- 5 Conclusions and Open Questions -- References -- The Pacific-Atlantic Front in the East Siberian Sea of the Arctic Ocean -- 1 Introduction -- 1.1 Background -- 1.2 Geography -- 1.3 Freshwater Contributions -- 1.4 Hydrography and Water Masses -- 1.5 General Circulation Patterns -- 1.6 Variations in the Pacific-Atlantic Front -- 2 Data and Methods -- 2.1 Data Sets -- 2.2 Quality Assurance/Quality Control -- 2.3 Definition of Geochemical Parameters -- 3 Results -- 3.1 Distinct Hydrographic Structures to the West and East of the Lomonosov Ridge -- 3.2 Variations Within the East Siberian Sea -- 4 Discussion -- 4.1 Tracing the Chukchi-Siberian (Pacific-Atlantic) Front Throughout the Arctic Ocean -- 4.2 Identifying the Split Between Fram Strait and Barents Sea Branches of Lower Halocline Water -- 5 Summary and Conclusions -- References -- Major Nutrient Fronts in the Northeastern Atlantic: From the Subpolar Gyre to Adjacent Shelves -- 1 Introduction -- 2 Nutrient Fronts in the Open Ocean -- 2.1 The Main Thermocline: Currents and Water Masses -- 2.2 From the Thermocline to the Photic Zone -- 2.3 The Subpolar Gyre -- 2.4 On and Around Rockall -- 2.4.1 South of Rockall -- 2.4.2 The Rockall Trough -- 2.4.3 On the Rockall-Hatton Plateau -- 2.5 The Iceland Basin -- 2.5.1 The Central Iceland Basin Branch -- 2.5.2 Interaction with the Overflows -- 2.5.3 Potential Convection into the IW Layer -- 2.6 An Integrated Perspective: In the Context of Sea-Surface Height, MLD, and the Gyre Index -- 2.7 After Established Summer Stratification -- 2.7.1 A Bottom-Up Mackerel Case Study -- 2.7.2 Gyre Impact on the Summer Conditions -- 3 Onwelling to Adjacent Shelves -- 3.1 From the Northeast Atlantic to the North Sea -- 3.1.1 Future Projections -- 3.1.2 Observations -- 3.2 The Faroe Shelf. , 3.2.1 Primary Production Variability: Intensity and Phenology -- 3.2.2 Silicate Limitation and Interplay Between the Outer and Central Shelf -- 3.2.3 Higher Trophic Levels -- 4 Summary -- References -- Fronts in the Baltic Sea: A Review with a Focus on Its North-Eastern Part -- 1 Introduction -- 2 Hydrographic and Environmental Setting -- 3 Fronts in the Baltic Proper -- 4 Estuarine Fronts in the Gulf of Finland -- 5 Strait Fronts in the Gulf of Riga -- 6 Upwelling Fronts -- 7 River Plume Fronts -- 8 Fronts in Satellite Ocean Colour Imagery -- 9 Discussion -- 10 Conclusions -- References -- The Kuroshio Nutrient Stream: Where Diapycnal Mixing Matters -- 1 Introduction -- 2 Observations and Simulations -- 2.1 In Situ Observations -- 2.1.1 Observations in the Kuroshio Extension Using a Turbulence Profiler -- 2.1.2 Tow-Yo CTD Observations Across the Kuroshio in 2015 -- 2.1.3 Observations in the Izu Ridge Using Profiling Floats -- 2.1.4 Tow-Yo Turbulence Observations in the Tokara Strait -- 2.1.5 Tow-Yo Turbulence Observations in the Hyuganada Sea -- 2.2 Instrumentation -- 2.2.1 Tow-Yo Microstructure Profiler, Underway-VMP -- 2.2.2 Autonomous Microstructure Profiling Float, Navis-MR -- 2.3 P-N Line and 137E Line Data -- 2.4 Numerical Simulation -- 3 Hydrographic and Nitrate Distributions along the Kuroshio -- 3.1 Thermohaline Distributions -- 3.2 Nitrate Distributions -- 4 Nitrate Transport by the Kuroshio Nutrient Stream -- 4.1 Mean Along Isopycnal Transport -- 4.2 Eddy-Induced Along Isopycnal Nutrient Flux -- 5 Diapycnal Nutrient Flux -- 5.1 Challenge to Measure Diapycnal Nutrient Flux -- 5.1.1 Turbulent Kinetic Energy Dissipation Rate and Eddy Diffusivity -- 5.1.2 Microscale Thermal Dissipation Rate and Effective Diffusivity for Heat -- 6 Mixing near the Kuroshio -- 6.1 Turbulence Induced by the Kuroshio Flowing Over Topographic Features. , 6.1.1 Tow-Yo Microstructure Surveys in the Tokara Strait -- 6.1.2 Tow-Yo Microstructure Surveys in the Hyuganada Sea -- 6.1.3 Profiling Float Surveys in the Kuroshio Over the Izu Ridge During June 2017 -- 6.2 Turbulence Near the Kuroshio Away from the Topographic Features -- 6.2.1 Microstructure Observations in the Kuroshio Extension -- 6.3 Double-Diffusive Convection in the Kuroshio Extension -- 6.3.1 Profiling Float Surveys in the Kuroshio Extension During July 2013 -- 6.3.2 Interannual Variabilities of Double-Diffusive Favorable Stratification Revealed by Argo Float Data -- 7 Lateral Advection Versus Diapycnal Nutrient Flux -- 8 Conclusions and Open Questions -- References -- Front-Driven Physical-Biogeochemical-Ecological Interactions in the Yellow Sea Large Marine Ecosystem -- 1 Introduction -- 2 Study Area and Data -- 3 Physicochemical Regimes and Frontogenesis in the Southwestern YSLME -- 3.1 Thermohaline and Density Fronts in Relation to the Water-Mass Structure -- 3.2 Turbidity Front -- 3.3 Nutrient Fronts -- 4 Front-Driven Physical-Biogeochemical-Ecological Interactions in the Southwestern YSLME -- 4.1 Nutrient Transport and Light Conditions Associated with the Fronts -- 4.2 Front-Driven Primary Production Regime -- 4.3 Anchovy Distribution and Other Ecological Processes in Relation to the Fronts -- 5 Concluding Remarks -- References -- Colored Dissolved Organic Matter in Frontal Zones -- 1 Introduction -- 2 Characterization of CDOM and FDOM -- 2.1 CDOM Absorption Measurements -- 2.2 FDOM Fluorescence Measurement -- 3 Vertical Profiles and Relation with Water Masses -- 3.1 Vertical Distribution -- 3.1.1 Vertical Mixing and CDOM -- 3.1.2 Vertical Mixing and FDOM -- 3.2 Influence of Lateral Ventilation -- 3.3 Eddy and Upwelling -- 4 Coastal Frontal Zones -- 5 Benthic Boundary Layer -- 6 Remote Sensing in Frontal Zones -- References. , Contamination by Persistent Organic Pollutants and Related Compounds in Deep-Sea Ecosystems Along Frontal Zones Around Japan -- 1 Introduction -- 2 Description of the Study Areas -- 2.1 The Western North Pacific, Off-Tohoku -- 2.2 The East China Sea -- 3 POPs and Related Compounds in the Western North Pacific, Off-Tohoku -- 3.1 Contamination Status -- 3.2 Species-Specific Accumulation and Trophic Magnification -- 3.3 Distribution in Relation to the Water-Mass Structure -- 3.4 Compositions and Temporal Trends of Organohalogen Compounds -- 4 POPs and Related Compounds in the East China Sea -- 4.1 Contamination Status -- 4.2 Species-Specific Accumulation and Composition of Organohalogen Compounds -- 4.3 Trophic Magnification and Sources of Contaminants in the Food Web -- 4.4 Distribution and Transport of POPs into Deep Waters -- 5 Conclusions and Perspectives -- References -- Dynamics of Transport, Accumulation, and Export of Plastics at Oceanic Fronts -- 1 Introduction -- 2 Fronts as Boundaries for Plastic Exchanges -- 3 Ocean Currents and the Transport of Plastics: A Problem of Scale -- 4 Tools, Prediction, and Validation Methodologies -- 4.1 Lagrangian Drifters -- 4.2 Eulerian Velocity Fields -- 4.3 Virtual Trajectories and Lagrangian Coherent Structures -- 4.4 Remote Sensing -- 5 Large-Scale, Mesoscale, and Submesoscale Frontal Systems: Selected Case Studies -- 5.1 The Antarctic Circumpolar Current: An Imperfect Barrier? -- 5.2 A Mesoscale Front in the NW Mediterranean Sea -- 5.3 Submesoscale Fronts in the Northern Gulf of Mexico -- 6 The Vertical Challenge -- 7 Conclusions and Outlook -- References -- Lagrangian Methods for Visualizing and Assessing Frontal Dynamics of Floating Marine Litter with a Focus on Tidal Basins -- 1 Introduction -- 1.1 Physical Oceanography of Fronts in Tidal Basins -- 1.2 Floating Marine Litter at Shelf Sea Fronts. , 2 Lagrangian Methods.