GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Arlington, VA :National Science Teachers Association,
    Keywords: Oceanography -- Experiments. ; Oceanography -- Study and teaching (Middle school). ; Electronic books.
    Description / Table of Contents: Project Earth Science: Physical Oceanography, Revised 2nd Edition, immerses students in activities that focus on water, the substance that covers nearly three-quarters of Earth's surface. Eighteen ready-to-use, teacher-tested classroom activities and supplemental readings offer explorations and straightforward explanations to foster intuitive understanding of key science concepts. Students cover topics such as the structure of water molecules, saltwater and freshwater mixing, and tidal forces as they create waves, dissolve substances, float eggs, and more.
    Type of Medium: Online Resource
    Pages: 1 online resource (289 pages)
    Edition: 1st ed.
    ISBN: 9781936959990
    DDC: 551.46
    Language: English
    Note: Intro -- Table of Contents -- Acknowledgments -- Introduction -- Safety in the Classroom Practices -- Standards Organizational Matrix -- Activities at a Glance Matrix -- Activity 1 Planner -- Act 1- A Pile of Water -- Activity 2 Planner -- Act 2- A Sticky Molecule -- Activity 3 Planner -- Act 3- Over and Under-Why Water's Weird -- Activity 4 Planner -- Act 4- How Water Holds Heat -- Activity 5 Planner -- Act 5- Water-The Universal Solvent -- Activity 6 Planner -- Act 6- Won't You BB My Hydrometer? -- Activity 7 Planner -- Act 7- Ocean Layers -- Activity 8 Planner -- Act 8- The Myth of Davy Jones's Locker -- Activity 9 Planner -- Act 9- Estuaries -Where the Rivers Meet the Sea -- Activity 10 Planner -- Act 10-Current Events in the Ocean -- Activity 11 Planner -- Act 11 Body Waves -- Activity 12 Planner -- Act 12- Waves and Windin a Box -- Activity 13 Planner -- Act 13- Activities for a Wave Tank -- Activity 14 Planner -- Act 14- Plotting Tidal Curves -- Activity 15 Planner -- Act 15- Tides Mobile -- Activity 16 Planner -- Act 16- The Bulge on the Other Side of Earth -- Activity 17 Planner -- Act 17- Oily Spills -- Activity 18 Planner -- Act 18- Forever Trash -- Readiings -- Reading 1- Water: The Sum of Its Parts -- Reading 2- The Ocean -- Reading 3- The Tides: A Balance of Forces -- Reading 4- Waves -- Reading 5- The Ocean: A Global View -- Constructing a Wave Tank -- Resources -- About the Authors -- Index.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Online Resource
    Online Resource
    New York :Cambridge University Press,
    Keywords: Continental shelf - Simulation methods. ; Electronic books.
    Description / Table of Contents: This is the first book to summarize the state of the art in modeling and simulation of the transport, evolution and fate of particles in the coastal ocean. It is an invaluable book for advanced students and researchers in oceanography, geophysics, marine and civil engineering, computational science and environmental science.
    Type of Medium: Online Resource
    Pages: 1 online resource (570 pages)
    Edition: 1st ed.
    ISBN: 9781316076699
    DDC: 551.46/18
    Language: English
    Note: Cover -- Half-title -- Dedication -- Title page -- Copyright information -- Table of contents -- About the authors -- Preface -- Acknowledgments -- List of acronyms -- Definitions and notation -- Introduction and scope -- Part I Background -- 1 The Coastal Ocean -- 1.1 Typical Motions and Scales -- 1.2 Particle Simulation -- 1.2.1 Motion -- 1.2.2 Rates -- 1.2.3 Gather, Scatter -- 1.2.4 Simulation -- 1.2.5 Aggregation and Identity -- 2 Drifters and Their Numerical Simulation -- 2.1 Introduction -- 2.2 Drifter Technology -- 2.2.1 Design -- 2.2.2 Communication -- 2.2.3 Quality Control -- 2.3 Particle Tracking -- 2.3.1 Basic Lagrangian Model -- 2.3.2 Practical Issues -- 2.4 Model Validation with Drifters -- 2.4.1 Field Experience -- 2.5 Drifter Applications -- 2.5.1 Drifter Assimilation -- 3 Probability and Statistics - A Primer -- 3.1 Basics - Random Numbers -- 3.1.1 Continuous Distributions: f and F -- 3.1.2 Properties: Survival, Hazard Rate -- 3.1.3 Properties: Mean, Variance, Moments -- 3.1.4 Properties: Median, Mode, Quartile -- 3.1.5 Properties: Other Means -- 3.1.6 Bounding Theorems -- 3.1.7 Discrete Distributions: P< -- sub> -- i< -- sub> -- and F< -- sub> -- j< -- sub> -- -- 3.2 Some Common Distributions -- 3.2.1 Continuous Distributions -- 3.2.2 Discrete Distributions -- 3.2.3 Importance of G, U, B, Pois -- 3.2.4 The Central Limit Theorem -- 3.3 Generating Random Numbers -- 3.3.1 General Methods -- 3.3.2 Some Specific Deviates -- 3.4 Sampling -- Finite N -- 3.4.1 Sample Statistics -- 3.4.2 Sample Mean -- 3.4.3 Sample Variance -- 3.4.4 Recap -- 3.5 Covariance -- 3.5.1 Definitions -- 3.5.2 Correlation and Autocorrelation -- 3.5.3 Autocorrelated Time Series -- 3.5.3.1 Separation-Based Covariance and Correlogram -- 3.5.3.2 Correlogram and Impulse Response -- 3.5.4 Autocorrelated Eulerian Fields -- 3.5.5 Generating Covariance. , 3.5.6 Summary - Covariance -- 3.6 Particles in a Box -- 3.6.1 Individual Residence Time -- 3.6.2 Aggregate Properties: Relaxation of Initial Condition -- 3.6.3 Export Rate -- 3.6.4 Long-Run Balance -- 3.6.5 Summary - Steady State -- 3.6.6 Exit Paths -- 3.6.7 Input Paths -- 3.6.8 Autocorrelation -- 3.6.9 Example - Branch Point -- 3.6.10 A Network of Boxes -- 3.6.10.1 Transfer Rate -- 3.6.10.2 Steady State -- 3.6.11 Closing Ideas - Particles in Boxes -- 3.7 Closure -- 3.8 General Sources -- 4 Dispersion by Random Walk -- 4.1 Introduction: Discrete Drunken Walk -- 4.2 Continuous Processes -- 4.2.1 Resolved and Subgrid Motion -- 4.2.2 A Hierarchy -- 4.3 The AR0 Model - Uncorrelated Random Walk and Simple Diffusion -- 4.3.1 The Displacement Process -- 4.3.2 Correspondence to Diffusion -- 4.3.3 Multi-Dimensions -- 4.3.4 Inhomogeneous Diffusion -- 4.3.5 Anisotropic Diffusion -- 4.3.6 Shear and Convergence -- 4.3.7 Metrics of Resolution -- 4.3.8 Stepsize and the Need for Autocorrelation -- 4.4 The AR1 Model - Autocorrelated Velocity -- 4.4.1 AR1: Continuous Form and Its Discretization -- 4.4.2 AR1: Discrete Canonical Form -- 4.4.3 AR1: Displacement -- 4.4.4 Some Summary Observations about the AR1 Model -- 4.5 The AR2 Model - Autocorrelated Acceleration -- 4.5.1 Discrete Canonical Forms -- 4.5.2 AR2 Velocity -- 4.5.3 AR2 Displacement and Link to Diffusion -- 4.6 The AR1-s Model - Spinning Walk -- 4.6.1 AR1-s Complex Velocity -- 4.6.2 AR1-s Displacement -- 4.6.3 AR1-s Results -- 4.6.4 Vorticity Sources -- 4.7 Summary - Four Random Walk Models -- 4.7.1 AR0 Model -- 4.7.2 AR1 Model -- 4.7.3 AR2 Model -- 4.7.4 AR1-s Model -- 4.8 Concluding Remarks - Random Motion -- 5 Boundary Conditions, Boundary Layers, Sources -- 5.1 Boundary Layers: Continuum and Discretization -- 5.2 Discretized Boundaries -- 5.2.1 Particle Motion and Change -- 5.2.2 States and Transitions. , 5.2.3 Boundary Types -- 5.2.4 Basic Needs for Boundary Particles -- 5.2.5 Boundary Sources -- 5.3 The Law of the Wall -- 5.4 A Repellant Boundary Layer -- 5.4.1 Boundary Particles -- 5.4.2 The Gaussian Case -- 5.4.3 Pelagic Particles -- 5.4.4 The Steady State -- 5.5 Examples -- 5.5.1 Oiling the Coast -- 5.5.2 Bioaccumulation -- 5.5.3 Wetland Harvesting -- 5.6 Beyond the Boundary - Exogenous Sources -- 5.7 Summary Comments -- 6 Turbulence Closure -- 6.1 Reynolds Stresses and the Gradient Flux Relation -- 6.1.1 The Gradient Flux Relation -- 6.2 Vertical Closure -- 6.2.1 Early Models -- 6.2.2 Turbulent Kinetic Energy -- 6.2.3 Turbulent Length Scale -- 6.3 Vertical Closure Examples -- 6.3.1 Level 2.5 Formulation -- 6.3.1.1 Governing Equations -- 6.3.1.2 Vertical Boundary Conditions -- 6.3.2 Level 2.0 Formulation -- 6.3.3 The Point Model -- 6.3.4 Steady-State Point Model, Level 2 Closure -- 6.3.4.1 Wind Only -- 6.3.4.2 Wind and Gravity -- 6.3.4.3 Rotation and Wind - The Ekman Layer -- 6.3.5 Some Implementations -- 6.4 Horizontal Closure -- 6.5 The Main Points -- Part II Elements -- 7 Meshes: Interpolation, Navigation, and Fields -- 7.1 The Horizontal Mesh -- 7.1.1 Triangles -- 7.1.2 Geometry -- 7.1.3 Triangle Basics -- 7.1.4 Depth -- 7.1.5 Spherical-Polar Coordinates -- 7.1.6 Horizontal Interpolation -- 7.1.6.1 Higher Order Interpolation -- 7.1.7 Gradient -- 7.1.8 Location and Navigation -- 7.1.8.1 Global and Local Coordinates -- 7.1.8.2 Is a Particle in an Element? -- 7.1.8.3 Motion within an Element -- 7.1.8.4 When Does a Particle Leave an Element? -- 7.2 Vertical Discretization -- 7.2.1 Separation of Variables -- 7.2.2 Special Functions and Global z-Interpolation -- 7.2.3 Piecewise Local z-Interpolation. -- 7.2.4 Vertical Interpolation -- 7.3 3-D Location, Interpolation, Navigation -- 7.3.1 Interpolation on a Single Element. , 7.3.2 Is a Particle in an Element? -- 7.3.3 Motion within an Element -- 7.3.4 When Does a Particle Leave an Element? -- 7.3.5 Summary: An Overlay of Horizontal Meshes -- 7.4 Meshes -- 7.4.1 The Union of Elements -- 7.4.2 Essential Data Structures -- 7.4.3 Example -- 7.4.4 Subsidiary Data Structures -- 7.4.5 The Galerkin Projection -- 7.4.6 Mesh Generators -- 7.4.7 Some Mesh Generation Packages -- 7.4.8 Mesh Diagnostics -- 7.4.9 Graphics -- 7.5 Quadrilateral Elements -- 7.5.1 Local Coordinates and Interpolation -- 7.5.2 Jacobian -- 7.5.3 Locating -- 8 Particles and Fields -- 8.1 Introduction -- 8.2 Scattering among Elements -- 8.3 Scattering within an Element -- 8.3.1 Triangles -- 8.3.1.1 Uniform Distribution on a Triangle -- 8.3.1.2 Linear Distribution on a Triangle -- 8.3.1.3 Examples -- 8.3.2 Quadrilaterals -- 8.4 Projections: The Density of a Set of Particles -- 8.4.1 Simple Fixed Mesh Projections -- 8.4.2 The Least Squares Projection -- 8.4.3 Mass Conservation -- 8.4.4 Example: Particles on a Mesh -- 8.4.5 Convergence - The Small [Delta]x Problem -- 8.4.6 Kernel Methods -- Part III Applications -- 9 Noncohesive Sediment - Dense Particles -- 9.1 Introduction -- 9.2 Three States: P, M, B -- 9.3 Sediment Particles -- 9.4 Settling Velocity -- 9.5 Bottom Boundary Layer -- 9.6 Entrainment -- 9.6.1 The Threshold of Motion - The Shields Parameter -- 9.6.2 Entrainment Rate -- 9.6.3 Initial Vertical Position - Entrainment Lift -- 9.7 Vertical Motion: The Rouse Number and z< -- sub> -- e< -- sub> -- -- 9.8 Profiles -- 9.9 Flight Simulations -- 9.10 Saltation -- 9.11 Burial -- 9.12 Theoretical Extensions -- 9.13 A Simple Particle Model -- 9.14 2-D -- 9.14.1 Bed-Load - Suspended Load Transport -- 9.14.2 Bed-Load Particle Velocity -- 9.14.3 Suspended Load Particle Velocity -- 9.14.4 Sediment Dispersion Coefficients -- 9.14.5 A Generic Scheme. , 9.14.6 Results -- 9.15 Summary of Notation -- 10 Oil - Chemically Active Particles -- 10.1 Introduction -- 10.1.1 Composition -- 10.1.2 Motion -- 10.1.3 Weathering -- 10.1.4 Subsurface Releases -- 10.2 Oil as Parcels -- 10.2.1 Surface and Subsurface Parcels -- 10.2.2 Generic Model Needs -- 10.3 Surface Parcels -- 10.3.1 Spreading -- 10.4 Weathering Processes -- 10.4.1 Evaporation -- 10.4.2 Emulsification -- 10.4.3 Density and Viscosity -- 10.4.4 A Simple Weathering Model -- 10.4.5 Entrainment -- 10.5 Motion -- 10.5.1 Stokes Drift and Surface Velocity -- 10.5.2 Random Walk Models -- 10.5.3 Droplet Rise Velocity -- 10.5.4 Droplet Size Distribution -- 10.6 Density and Crowding -- 10.6.1 Mass Field -- 10.6.2 Crowding -- 10.7 Submerged Parcels -- 10.7.1 Surface Source - Entrainment -- 10.7.2 Shear Dispersion -- 10.7.3 Subsurface Source - Blowout -- 10.7.4 Dissolution -- 10.8 Field Tests -- 10.8.1 Surface Releases -- 10.8.2 Subsurface Releases -- 10.8.3 The Deepwater Horizon Incident -- 10.9 Impact Assessment -- 11 Individual-Based Models - Biotic Particles -- 11.1 Introduction -- 11.2 Diversity in the Cohort -- 11.3 Individual-Based States -- 11.3.1 Mixing and Aggregation -- 11.3.2 Life Histories -- 11.3.3 Eulerian and Lagrangian Quantities -- 11.3.4 Continuous and Logical States -- State Transitions -- 11.4 Vital Rates -- 11.4.1 Growth Rate Distribution - Analytic Example -- 11.4.2 Growth Rate Distribution: Simulation -- 11.4.3 Multiple Equilibria -- 11.4.4 Rate Estimation -- 11.5 Mortality -- 11.5.1 Simulations: Individual-Based Mortality -- 11.5.2 Individual Survivorship Probability: Geometric Distribution -- 11.5.3 Lifetime Distribution -- 11.5.4 Cohort Abundance: Binomial Distribution -- 11.5.5 Cohort Death Rate -- 11.5.6 Example: Growth, Mortality, Motion -- 11.6 Stage Progression -- 11.6.1 Example: Three Stages. , 11.6.2 Stage Completion Rate, Residence Time - Constant [alpha].
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Book
    Book
    New York, NY : Cambridge University Press
    Keywords: Coastal sediments Mathematical models ; Oceanography Simulation methods ; Dynamics of a particle Simulation methods ; Continental shelf Simulation methods ; Meereskunde ; Teilchenbewegung ; Meeresströmung ; Hydrologie ; Strömungsmechanik ; Teilchenbewegung
    Type of Medium: Book
    Pages: xxxiii, 510 Seiten, 12 ungezählte Blätter , Illustrationen, Diagramme, Karten , 26 cm
    ISBN: 9781107061750
    DDC: 551.46/18
    RVK:
    RVK:
    Language: English
    Note: Literaturverzeichnis: Seiten 479-505
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2012-09-12
    Description: Capability for sea surface salinity observation was an important gap in ocean remote sensing in the last few decades of the 20th century. New technological developments during the 1990s at the European Space Agency led to the proposal of SMOS (Soil Moisture and Ocean Salinity), an Earth explorer opportunity mission based on the use of a microwave interferometric radiometer, MIRAS (Microwave Imaging Radiometer with Aperture Synthesis). SMOS, the first satellite ever addressing the observation of ocean salinity from space, was successfully launched in November 2009. The determination of salinity from the MIRAS radiometric measurements at 1.4 GHz is a complex procedure that requires high performance from the instrument and accurate modelling of several physical processes that impact on the microwave emission of the ocean’s surface. This paper introduces SMOS in the ocean remote sensing context, and summarizes the MIRAS principles of operation and the SMOS salinity retrieval approach. It describes the Spanish SMOS high-level data processing centre (CP34) and the SMOS Barcelona Expert Centre on Radiometric Calibration and Ocean Salinity (SMOS-BEC), and presents a preliminary validation of global sea surface salinity maps operationally produced by CP34.
    Print ISSN: 0214-8358
    Electronic ISSN: 1886-8134
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    Copernicus Publications on behalf of the European Geosciences Union and the American Geophysical Union
    Publication Date: 2022-05-25
    Description: © Author(s) 2007. This work is licensed under a Creative Commons License. The definitive version was published in Nonlinear Processes in Geophysics 14 (2007): 73-77, doi: 10.5194/npg-14-73-2007
    Description: Expectation maximization (EM) is used to estimate the parameters of a Gaussian Mixture Model for spatial time series data. The method is presented as an alternative and complement to Empirical Orthogonal Function (EOF) analysis. The resulting weights, associating time points with component distributions, are used to distinguish physical regimes. The method is applied to equatorial Pacific sea surface temperature data from the TAO/TRITON mooring time series. Effectively, the EM algorithm partitions the time series into El Nino, La Nina and normal conditions. The EM method leads to a clearer interpretation of the variability associated with each regime than the basic EOF analysis.
    Description: This work was supported by NSF grant DMS-0417845.
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2022-05-25
    Description: © The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Geophysical Research: Oceans 122 (2017): 2760–2780, doi:10.1002/2016JC012318.
    Description: A system of barrier islands and back-barrier bays occurs along southern Long Island, New York, and in many coastal areas worldwide. Characterizing the bay physical response to water level fluctuations is needed to understand flooding during extreme events and evaluate their relation to geomorphological changes. Offshore sea level is one of the main drivers of water level fluctuations in semienclosed back-barrier bays. We analyzed observed water levels (October 2007 to November 2015) and developed analytical models to better understand bay water level along southern Long Island. An increase (∼0.02 m change in 0.17 m amplitude) in the dominant M2 tidal amplitude (containing the largest fraction of the variability) was observed in Great South Bay during mid-2014. The observed changes in both tidal amplitude and bay water level transfer from offshore were related to the dredging of nearby inlets and possibly the changing size of a breach across Fire Island caused by Hurricane Sandy (after December 2012). The bay response was independent of the magnitude of the fluctuations (e.g., storms) at a specific frequency. An analytical model that incorporates bay and inlet dimensions reproduced the observed transfer function in Great South Bay and surrounding areas. The model predicts the transfer function in Moriches and Shinnecock bays where long-term observations were not available. The model is a simplified tool to investigate changes in bay water level and enables the evaluation of future conditions and alternative geomorphological settings.
    Description: New York State Department of Environmental Conservation Grant Number: (NYS-DEC); U.S. Geological Survey (USGS)
    Keywords: Water level ; Back-barrier bays ; Tidal variations ; Storm effects ; Dredging ; Long Island
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2022-05-25
    Description: Author Posting. © The Author(s), 2011. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Ocean Modelling 36 (2011): 219-227, doi:10.1016/j.ocemod.2011.01.001.
    Description: A simple improvement to objective analysis of hydrographic data is proposed to eliminate spatial aliasing e ects in tidally energetic regions. The proposed method consists of the evaluation of anomalies from observations with respect to circulation model elds. The procedure is run iteratively to achieve convergence. The method is applied in the Bay of Fundy and compared with traditional objective analysis procedures and dynamically adjusted climatological elds. The hydrographic skill (di erence between observed and model temperature and salinity) of the dynamically adjusted objective analysis is signi cantly improved by reducing bias and correcting the vertical structure. Representation of the observed velocities is also improved. The resulting ow is consistent with the known circulation in the Bay.
    Description: The preparation of this paper was supported by NSF/NIEHS grant OCE- 0430724 (Woods Hole Center for Oceans and Human Health) and NOAA grant NA06NOS4780245 (GOMTOX).
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2022-05-25
    Description: This paper is not subject to U.S. copyright. The definitive version was published in Estuaries and Coasts 35 (2012): 1285-1298, doi:10.1007/s12237-012-9515-x.
    Description: Increased nutrient loading to estuaries has led to eutrophication, degraded water quality, and ecological transformations. Quantifying nutrient loads in systems with significant groundwater input can be difficult due to the challenge of measuring groundwater fluxes. We quantified tidal and freshwater fluxes over an 8-week period at the entrance of West Falmouth Harbor, Massachusetts, a eutrophic, groundwater-fed estuary. Fluxes were estimated from velocity and salinity measurements and a total exchange flow (TEF) methodology. Intermittent cross-sectional measurements of velocity and salinity were used to convert point measurements to cross-sectionally averaged values over the entire deployment (index relationships). The estimated mean freshwater flux (0.19 m3/s) for the 8-week period was mainly due to groundwater input (0.21 m3/s) with contributions from precipitation to the estuary surface (0.026 m3/s) and removal by evaporation (0.048 m3/s). Spring–neap variations in freshwater export that appeared in shorter-term averages were mostly artifacts of the index relationships. Hydrodynamic modeling with steady groundwater input demonstrated that while the TEF methodology resolves the freshwater flux signal, calibration of the index– salinity relationships during spring tide conditions only was responsible for most of the spring–neap signal. The mean freshwater flux over the entire period estimated from the combination of the index-velocity, index–salinity, and TEF calculations were consistent with the model, suggesting that this methodology is a reliable way of estimating freshwater fluxes in the estuary over timescales greater than the spring– neap cycle. Combining this type of field campaign with hydrodynamic modeling provides guidance for estimating both magnitude of groundwater input and estuarine storage of freshwater and sets the stage for robust estimation of the nutrient load in groundwater.
    Description: Funding was provided by the USGS Coastal and Marine Geology Program and by National Science Foundation Award #0420575 from the Biocomplexity/Coupled Biogeochemical Cycles Program.
    Keywords: Estuarine hydrodynamics ; Coastal groundwater discharge ; Total exchange flow ; Estuarine modeling ; Index-velocity method
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2007. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 112 (2007): C05022, doi:10.1029/2006JC003903.
    Description: A set of model simulations are used to determine the principal forcing mechanisms that resulted in anomalously cold water in the South Atlantic Bight (SAB) in the summer of 2003. Updated mass field and elevation boundary conditions from basin-scale Hybrid Coordinate Ocean Model (HYCOM) simulations are compared to climatological forcing to provide offshore and upstream influences in a one-way nesting sense. Model skill is evaluated by comparing model results with observations of velocity, water level, and surface and bottom temperature. Inclusion of realistic atmospheric forcing, river discharge, and improved model dynamics produced good skill on the inner shelf and midshelf. The intrusion of cold water onto the shelf occurred predominantly along the shelf-break associated with onshore flow in the southern part of the domain north of Cape Canaveral (29° to 31.5°). The atmospheric forcing (anomalously strong and persistent upwelling-favorable winds) was the principal mechanism driving the cold event. Elevated river discharge increased the level of stratification across the inner shelf and midshelf and contributed to additional input of cold water into the shelf. The resulting pool of anomalously cold water constituted more than 50% of the water on the shelf in late July and early August. The excess nutrient flux onto the shelf associated with the upwelling was approximated using published nitrate-temperature proxies, suggesting increased primary production during the summer over most of the SAB shelf.
    Description: The preparation of this paper was primarily supported by the Southeast Atlantic Coastal Ocean Observing System (SEACOOS) and the South Atlantic Bight Limited Area Model (SABLAM). SEACOOS is a collaborative, regional program sponsored by the Office of Naval Research under award N00014-02-1-0972 and managed by the University of North Carolina-General Administration. SABLAM was sponsored by the National Ocean Partnership Program (award NAG 13-00041). Data from ship surveys were collected and processed with the support from NSF grant OCE-0099167 (J. R. Nelson), NSF grant OCE-9982133 (J. O. Blanton, SkIO), NASA grant NAG-10557 (J. R. Nelson), and SEACOOS. NOAA NDBC buoy data and NOS coastal water level records were obtained through NOAA-supported data archives and web portals. Moored instrument data from the Carolina Coastal Ocean Observation and Prediction System (Caro-COOPS) were acquired from the system’s website (http://www.carocoops.org). Caro-COOPS is sponsored by NOAA grant NA16RP2543.
    Keywords: Summer upwelling ; Model simulations ; South Atlantic Bight
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 118 (2013): 5844–5857, doi:10.1002/jgrc.20403.
    Description: This study characterizes the seasonal cycle of the Catalan inner-shelf circulation using observations and complementary numerical results. The relation between seasonal circulation and forcing mechanisms is explored through the depth-averaged momentum balance, for the period between May 2010 and April 2011, when velocity observations were partially available. The monthly-mean along-shelf flow is mainly controlled by the along-shelf pressure gradient and by surface and bottom stresses. During summer, fall, and winter, the along-shelf momentum balance is dominated by the barotropic pressure gradient and local winds. During spring, both wind stress and pressure gradient act in the same direction and are compensated by bottom stress. In the cross-shelf direction the dominant forces are in geostrophic balance, consistent with dynamic altimetry data.
    Description: The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007/2013) under grant agreement 242284 (Field_ac project).
    Description: 2014-04-25
    Keywords: Momentum balance ; Catalan shelf ; Hydrodynamic modeling ; Seasonal variability
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...