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  • 1
    Monograph available for loan
    Monograph available for loan
    Amsterdam : Elsevier
    Call number: AWI G2-18-91738
    Type of Medium: Monograph available for loan
    Pages: XI, 716 Seiten , Illustrationen
    Edition: third edition
    ISBN: 9780123877826
    Language: English
    Note: Contents: Preface. - Acknowledgments. - 1. Data Acquisition and Recording. - 1.1 Introduction. - 1.2 Basic Sampling Requirements. - 1.3 Temperature. - 1.4 Salinity. - 1.5 Depth or Pressure. - 1.6 Sea-Level Measurement. - 1.7 Eulerian Currents. - 1.8 Lagrangian Current Measurements. - 1.9 Wind. - 1.10 Precipitation. - 1.11 Chemical Tracers. - 1.12 Transient Chemical Tracers. - 2. Data Processing and Presentation. - 2.1 Introduction. - 2.2 Calibration. - 2.3 Interpolation. - 2.4 Data Presentation. - 3. Statistical Methods and Error Handling. - 3.1 Introduction. - 3.2 Sample Distributions. - 3.3 Probability. - 3.4 Moments and Expected Values. - 3.5 Common PDFs. - 3.6 Central Limit Theorem. - 3.7 Estimation. - 3.8 Confidence Intervals. - 3.9 Selecting the Sample Size. - 3.10 Confidence Intervals for Altimeter-Bias Estimates. - 3.11 Estimation Methods. - 3.12 Linear Estimation (Regression). - 3.13 Relationship between Regression and Correlation. - 3.14 Hypothesis Testing. - 3.15 Effective Degrees of Freedom. - 3.16 Editing and Despiking Techniques: The Nature of Errors. - 3.17 Interpolation: Filling the Data Gaps. - 3.18 Covariance and the Covariance Matrix. - 3.19 The Bootstrap and Jackknife Methods. - 4. The Spatial Analyses of Data Fields. - 4.1 Traditional Block and Bulk Averaging. - 4.2 Objective Analysis. - 4.3 Kriging. - 4.4 Empirical Orrhogonal Functions. - 4.5 Extended Empirical Orrhogonal Functions. - 4.6 Cyclostationary EOFs. - 4.7 Factor Analysis. - 4.8 Normal Mode Analysis. - 4.9 Self Organizing Maps. - 4.10 Kalman Filters. - 4.11 Mixed Layer Depth Estimation. - 4.12 Inverse Methods. - 5. Time Series Analysis Methods. - 5.1 Basic Concepts. - 5.2 Stochastic Processes and Stationarity. - 5.3 Correlation Functions. - 5.4 Spectral Analysis. - 5.5 Spectral Analysis (Parametric Methods). - 5.6 Cross-Spectral Analysis. - 5.7 Wavelet Analysis. - 5.8 Fourier Analysis. - 5.9 Harmonic Analysis. - 5.10 Regime Shift Detection. - 5.11 Vector Regression. - 5.12 Fractals. - 6. Digital Filters. - 6.1 Introduction. - 6.2 Basic Concepts. - 6.3 Ideal Filters. - 6.4 Design of Oceanographic Filters. - 6.5 Running-Mean Filters. - 6.6 Godin-Type Filters. - 6.7 Lanczos-window Cosine Filters. - 6.8 Butterworth Filters. - 6.9 Kaiser-Bessel Filters. - 6.10 Frequency-Domain (Transform) Filtering. - References. - Appendix A: Units in Physical Oceanography. - Appendix B: Glossary of Statistical Terminology. - Appendix C: Means, Variances and Moment,Generating Functions for Some Common Continuous Variables. - Appendix D: Statistical Tables. - Appendix E: Correlation Coefficients at the 5% and 1% Levels of Significance for Various Degrees of Freedom v. - Appendix F: Approximations and Nondimensional Numbers in Physical Oceanography. - Appendix G: Convolution. - Index.
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  • 2
    Monograph available for loan
    Monograph available for loan
    Oxford [u.a.] : Pergamon
    Call number: AWI G2-98-0260
    Description / Table of Contents: Data Analysis Methods in Physical Oceanography provides a comprehensive and practical compilation of the essential information and analysis techniques required for the advanced processing and interpretation of digital spatiatemporal data in physical oceanography as well in other branches of the geophysical sciences. This book assumes a fundamental understanding of calculus and is directed primarily towards scientists and engineers in industry, government and universities, including graduate and advanced undergraduate students. Spanning five chapters and numerous appendices, the book provides a valuable compendium of the fundamental data processing tools required by the marine scientist. Many of these tools will be of use in other branches of the physical and natural sciences. The book begins with detailed discussion of the instruments used to collect oceanographic data and the limitation of the resulting data. Data presentation and display methods are reviewed in chapter two. The remaining three chapters supply detailed information on a broad range of statistical and deterministic data analysis methods ranging from established methods such as Analysis of Variance methods and Principal Component Analysis, to more recent data analysis techniques such as Wavelet Transforms and Fractals. Each technique is illustrated by a worked example and a large number of references are given for the reader who may want to dig deeper into the subject. No other book of this type exists that brings together in one volume information on the measurement systems, data editing, data reduction/processing and analysis and interpretational. This book brings all of this information into a single volume which can act as a text for the neophyte or a reference volume for the experienced scientist. The book is both a guide and an encyclopaedia to modern data processing methods in the geophysical sciences. Many nonoceanographers should find this volume a handy reference on their shelves.
    Type of Medium: Monograph available for loan
    Pages: XVI, 634 S. : Ill., graph. Darst., Kt.
    Edition: 1st ed.
    ISBN: 0080314341
    Language: English
    Note: Contents: Preface. - Acknowledgments. - Chapter 1 Data Acquisition and Recording. - 1.1 Introduction. - 1.2 Basic sampling requirements. - 1.2.1 Sampling interval. - 1.2.2 Sampling duration. - 1.2.3 Sampling accuracy. - 1.2.4 Burst sampling versus continuous sampling. - 1.2.5 Regularly versus irregularly sampled data. - 1.2.6 Independent realizations. - 1.3 Temperature. - 1.3.1 Mercury thermometers. - 1.3.2 The mechanical bathythermograph (MBT). - 1.3.3 Resistance thermometers (expendable bathythermograph: XBT). - 1.3.4 Salinity/conductivity-temperature-depth profilers. - 1.3.5 Dynamic response of temperature sensors 19 1.3.6 Response times of CTD systems. - 1.3.7 Temperature calibration of STD/CTD profilers. - 1.3.8 Sea surface temperature. - 1.3.9 The modern digital thermometer. - 1.3.10 Potential temperature and density. - 1.4 Salinity. - 1.4.1 Salinity and electrical conductivity. - 1.4.2 The practical salinity scale. - 1.4.3 Nonconductive methods. - 1.5 Depth or pressure. - 1.5.1 Hydrostatic pressure. - 1.5.2 Free-fall velocity. - 1.5.3 Echo sounding. - 1.5.4 Other depth sounding methods. - 1.6 Sea-level measurement. - 1.6.1 Tide and pressure gauges. - 1.6.2 Satellite altimetry. - 1.6.3 Inverted echo sounder (IES). - 1.6.4 Wave height and direction. - 1.7 Eulerian currents. - 1.7.1 Early current meter technology. - 1.7.2 Rotor-type current meters. - 1.7.3 Nonmechanical current meters. - 1.7.4 Profiling acoustic Doppler current meters (ADCM). - 1.7.5 Comparisons of current meters. - 1.7.6 Electromagnetic methods. - 1.7.7 Other methods of current measurement. - 1.7.8 Mooring logistics. - 1.7.9 Acoustic releases. - 1.8 Lagrangian current measurements. - 1.8.1 Drift cards and bottles. - 1.8.2 Modern drifters. - 1.8.3 Processing satellite-tracked drifter data. - 1.8.4 Drifter response. - 1.8.5 Other types of surface drifters. - 1.8.6 Subsurface floats. - 1.8.7 Surface displacements in satellite imagery. - 1.9 Wind. - 1.10 Precipitation. - 1.11 Chemical tracers. - 1.11.1 Conventional tracers. - 1.11.2 Light attenuation and scattering. - 1.11.3 Oxygen isotope: δ18O. - 1.11.4 Helium-3; helium/heat ratio. - 1.12 Transient chemical tracers. - 1.12.1 Tritium. - 1.12.2 Radiocarbon. - 1.12.3 Chlorofluorocarbons. - 1.12.4 Radon-222. - 1.12.5 Sulfur hexachloride. - 1.12.6 Strontium-90. - Chapter 2 Data Processing and Presentation. - 2.1 Introduction. - 2.2 Calibration. - 2.3 Interpolation. - 2.4 Data presentation. - 2.4.1 Introduction. - 2.4.2 Vertical profiles. - 2.4.3 Vertical sections. - 2.4.4 Horizontal maps. - 2.4.5 Map projections. - 2.4.6 Characteristic or property versus property diagrams. - 2.4.7 Time-series presentation. - 2.4.8 Histograms. - 2.4.9 New directions in graphical presentation. - Chapter 3 Statistical Methods and Error Handling. - 3.1 Introduction. - 3.2 Sample distributions. - 3.3 Probability. - 3.3.1 Cumulative probability functions. - 3.4 Moments and expected values. - 3.4.1 Unbiased estimators and moments. - 3.4.2 Moment generating functions. - 3.5 Common probability density functions. - 3.6 Central limit theorem. - 3.7 Estimation. - 3.8 Confidence intervals. - 3.8.1 Confidence interval for μ (σ known) 3.8.2 Confidence interval for μ (σ unknown) 3.8.3 Confidence interval for σ^2. - 3.8.4 Goodness-of-fit test. - 3.9 Selecting the sample size. - 3.10 Confidence intervals for altimeter bias estimates. - 3.11 Estimation methods. - 3.11.1 Minimum variance unbiased estimation. - 3.11.2 Method of moments. - 3.11.3 Maximum likelihood. - 3.12 Linear estimation (regression). - 3.12.1 Method of least squares. - 3.12.2 Standard error of the estimate. - 3.12.3 Multivariate regression. - 3.12.4 A computational example of matrix regression. - 3.12.5 Polynomial curve fitting with least squares. - 3.12.6 Relationship between least-squares and maximum likelihood. - 3.13 Relationship between regression and correlation. - 3.13.1 The effects of random errors on correlation. - 3.13.2 The maximum likelihood correlation estimator. - 3.13.3 Correlation and regression: cause and effect. - 3.14 Hypothesis testing. - 3.14.1 Significance levels and confidence intervals for correlation. - 3.14.2 Analysis of variance and the F-distribution. - 3.15 Effective degrees of freedom. - 3.1 5.1 Trend estimates and the integral time scale. - 3.16 Editing and despiking techniques: the nature of errors. - 3.16.1 Identifying and removing errors. - 3.16.2 Propagation of error. - 3.16.3 Dealing with numbers: the statistics of roundoff. - 3.16.4 Gauss-Markov theorem. - 3.17 Interpolation: filling the data gaps. - 3.17.1 Equally and unequally spaced data. - 3.17.2 Interpolation methods. - 3.17.3 Interpolating gappy records: practical examples. - 3.18 Covariance and the covariance matrix. - 3.18.1 Covariance and structure functions. - 3.18.2 A computational example. - 3.18.3 Multivariate distributions. - 3.19 Bootstrap and jackknife methods. - 3.19.1 Bootstrap method. - 3.19.2 Jackknife method. - Chapter 4 The Spatial Analyses of Data Fields. - 4.1 Traditional block and bulk averaging. - 4.2 Objective analysis. - 4.2.1 Objective mapping: examples. - 4.3 Empirical orthogonal functions. - 4.3.1 Principal axes of a single vector time series (scatter plot). - 4.3.2 EOF computation using the scatter matrix method. - 4.3.3 EOF computation using singular value decomposition. - 4.3.4 An example: deep currents near a mid-ocean ridge. - 4.3.S Interpretation of EOFs. - 4.3.6 Variations on conventional EOF analysis. - 4.4 Normal mode analysis. - 4.4.1 Vertical normal modes. - 4.4.2 An example: normal modes of semidiurnal frequency. - 4.4.3 Coastal-trapped waves (CTWs). - 4.5 Inverse methods. - 4.5.1 General inverse theory. - 4.5.2 Inverse theory and absolute currents. - 4.5.3 The IWEX internal wave problem. - 4.5.4 Summary of inverse methods. - Chapter 5 Time-series Analysis Methods. - 5.1 Basic concepts. - 5.2 Stochastic processes and stationarity. - 5.3 Correlation functions. - 5.4 Fourier analysis. - 5.4.1 Mathematical formulation. - 5.4.2 Discrete time series. - 5.4.3 A computational example. - 5.4.4 Fourier analysis for specified frequencies. - 5.4.5 The fast Fourier transform. - 5.5 Harmonic analysis. - 5.5.1 A least-squares method. - 5.5.2 A computational example. - 5.5.3 Harmonic analysis of tides. - 5.5.4 Choice of constituents. - 5.5.5 A computational example for tides. - 5.5.6 Complex demodulation. - 5.6 Spectral analysis. - 5.6.1 Spectra of deterministic and stochastic processes. - 5.6.2 Spectra of discrete series. - 5.6.3 Conventional spectral methods. - 5.6.4 Spectra of vector series. - 5.6.5 Effect of sampling on spectral estimates. - 5.6.6 Smoothing spectral estimates (windowing). - 5.6.7 Smoothing spectra in the frequency domain. - 5.6.8 Confidence intervals on spectra. - 5.6.9 Zero-padding and prewhitening. - 5.6.10 Spectral analysis of unevenly spaced time series. - 5.6.11 General spectral bandwidth and Q of the system. - 5.6.12 Summary of the standard spectral analysis approach. - 5.7 Spectral analysis (parametric methods). - 5.7.1 Some basic concepts. - 5.7.2 Autoregressive power spectral estimation. - 5.7.3 Maximum likelihood spectral estimation. - 5.8 Cross-spectral analysis. - 5.8.1 Cross-correlation functions. - 5.8.2 Cross-covariance method. - 5.8.3 Fourier transform method. - 5.8.4 Phase and cross-amplitude functions. - 5.8.S Coincident and quadrature spectra. - 5.8.6 Coherence spectrum (coherency). - 5.8.7 Frequency response of a linear system. - 5.8.8 Rotary cross-spectral analysis. - 5.9 Wavelet analysis. - 5.9.1 The wavelet transform. - 5.9.2 Wavelet algorithms. - 5.9.3 Oceanographic examples. - 5.9.4 The S-transformation. - 5.9.5 The multiple filter technique. - 5.10 Digital filters. - 5.10.1 Introduction. - 5.10.2 Basic concepts. - 5.10.3 Ideal filters. -
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  • 3
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    Unknown
    PANGAEA
    In:  Supplement to: Chang, Alice S; Bertram, Miriam A; Ivanochko, Tara S; Calvert, Stephen E; Dallimore, A; Thomson, Richard E (2013): Annual record of particle fluxes, geochemistry and diatoms in Effingham Inlet, British Columbia, Canada, and the impact of the 1999 La Niña event. Marine Geology, 337, 20-34, https://doi.org/10.1016/j.margeo.2013.01.003
    Publication Date: 2023-01-13
    Description: Sediment traps were deployed inside the anoxic inner basin of Effingham Inlet and at the oxygenated mouth of the inlet from May 1999 to September 2000 in a pilot study to determine the annual depositional cycle and impact of the 1999-2000 La Niña event within a western Canadian inlet facing the open Pacific Ocean. Total mass flux, geochemical parameters (carbon, nitrogen, opal, major and minor element contents, and stable isotope ratios) and diatom assemblages were determined and compared with meteorological and oceanographic data. Deposition was seasonal, with coarser grained terrestrial components and benthic diatoms settling in the autumn and winter, coincident with the rainy season. Marine sedimentary components and abundant pelagic diatoms were coincident with coastal upwelling in the spring and summer. Despite the seasonal differences in deposition, the typical temperate-zone Thalassiosira-Skeletonema-Chaetoceros bloom succession was muted. A July 1999 total mass flux peak and an increase in biogenous components coincided with a rare bottom-water oxygen renewal event in the inlet. Likewise, there were cooler-than-average sea surface temperatures (SSTs) just outside the inlet, and unusually high abundances of a previously undescribed cool-water marine diatom (Fragilariopsis pacifica sp. nov.) within the inlet. Each of these occurrences likely reflects a response to the strong La Niña that followed the year after the strongest-ever recorded El Niño event of 1997-1998. By the autumn of 1999, SSTs had returned to average, and F. pacifica had all but disappeared from the remaining trap record, indicating that oceanographic conditions had returned to normal. Oxygenation events were not witnessed in the inlet in the years before or after 1999, suggesting that a rare oceanographic and climatic event was captured by this sediment trap time series. The data from this record can therefore be used as a benchmark for identifying anomalous environmental conditions on this coast.
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
    Publication Date: 2023-02-12
    Keywords: Aluminium; Barium; British Columbia, Canada; Calcium; Calculated; Chlorine; Chromium; DATE/TIME; DEPTH, water; Dry mass; Duration, number of days; Effingham_inlet-mouth_BAT; Effingham_inner-basin_BAT; Event label; Flux of total mass; Iron; Magnesium; Manganese; Measured; Nickel; Number; Phosphorus; Potassium; Potassium/Aluminium ratio; Sample code/label; Sample mass; Silicon; Sodium; Strontium; Sulfur; Titanium; Titanium/Aluminium ratio; Trap; TRAP; Vanadium; X-ray fluorescence (XRF); Zinc
    Type: Dataset
    Format: text/tab-separated-values, 1514 data points
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  • 5
    Publication Date: 2023-05-12
    Keywords: Area/locality; Heat flow; LATITUDE; LONGITUDE; Method comment; Number; Sample, optional label/labor no
    Type: Dataset
    Format: text/tab-separated-values, 25 data points
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  • 6
    Publication Date: 2023-07-10
    Keywords: Achnanthes minutissima; Achnanthes minutissima, valve, flux; Biogenic, flux; British Columbia, Canada; Calcium carbonate; Calcium carbonate, flux; Calcium carbonate, flux of total flux; Calculated; Calculated, salt-rinsed; Carbon, organic, flux; Carbon, organic, flux of total flux; Carbon, organic, total; Carbon, organic/Nitrogen, organic ratio; Carbon, total; Carbon in carbonate; Chaetoceros spp. resting spore valve, flux; Chaetoceros spp. resting spore valves per unit sediment dry mass; Chlorinity; DATE/TIME; DEPTH, water; Diatoms, benthic, valve, flux; Diatoms, benthic, valves per unit sediment dry mass; Diatoms, total, valve, flux; Diatoms, total valves, per unit sediment dry mass; Dry mass; Duration, number of days; Effingham_inlet-mouth_OSU; Effingham_inner-basin_OSU; Event label; Flux of total mass; Fragilariopsis pacifica; Fragilariopsis pacifica, valve, flux; Fragilariopsis pseudonana; Fragilariopsis pseudonana, valve, flux; Lithogenic, flux; Lithogenic, flux of total flux; Measured; Minidiscus spp.; Minidiscus spp., valve, flux; Navicula perminuta; Navicula perminuta, valve, flux; Nitrogen, organic; Nitrogen, organic, flux; Nitrogen, organic, flux of total flux; Nitrogen, total; Nitzschia frustulum; Nitzschia frustulum, valve, flux; Number; Opal, biogenic silica; Opal, flux; Opal, flux of total flux; Planothidium delicatulum; Planothidium delicatulum, valve, flux; Pseudo-nitzschia seriata; Pseudo-nitzschia seriata, valve, flux; Rhizosolenia spp.; Rhizosolenia spp., valve, flux; Sample code/label; Skeletonema costatum; Skeletonema costatum, valve, flux; Thalassionema nitzschioides; Thalassionema nitzschioides, valve, flux; Thalassiosira decipiens; Thalassiosira decipiens, valve, flux; Thalassiosira nordenskioeldii; Thalassiosira nordenskioeldii, valve, flux; Thalassiosira pacifica; Thalassiosira pacifica, valve, flux; Trap; TRAP; δ13C, organic carbon; δ15N, bulk sediment
    Type: Dataset
    Format: text/tab-separated-values, 3366 data points
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  • 7
    Publication Date: 2022-05-26
    Description: Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 36 (2009): L19301, doi:10.1029/2009GL040006.
    Description: Bottom pressure measurements acquired from the TAG hydrothermal field on the Mid-Atlantic Ridge (26°N) contain clusters of narrowband spectral peaks centered at periods from 22 to 53.2 minutes. The strongest signal at 53.2 min corresponds to 13 mm of water depth variation. Smaller, but statistically significant, signals were also observed at periods of 22, 26.5, 33.4, and 37.7 min (1–4 mm amplitude). These kinds of signals have not previously been observed in the ocean, and they appear to represent vertical motion of the seafloor in response to hydrothermal flow - similar in many ways to periodic terrestrial geysers. We demonstrate that displacements of 13 mm can be produced by relatively small flow-induced pressures (several kPa) if the source region is less than ∼100 m below the seafloor. We suggest that the periodic nature of the signals results from a non-linear relationship between fluid pore pressure and crustal permeability.
    Keywords: Ground ; Displacement ; Hydrothermal
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/postscript
    Format: application/pdf
    Format: text/plain
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  • 8
    Publication Date: 2022-05-26
    Description: Author Posting. © American Meteorological Society, 2014. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 44 (2014): 319–342, doi:10.1175/JPO-D-13-095.1.
    Description: The California Undercurrent (CUC), a poleward-flowing feature over the continental slope, is a key transport pathway along the west coast of North America and an important component of regional upwelling dynamics. This study examines the poleward undercurrent and alongshore pressure gradients in the northern California Current System (CCS), where local wind stress forcing is relatively weak. The dynamics of the undercurrent are compared in the primitive equation Navy Coastal Ocean Model and a linear coastal trapped wave model. Both models are validated using hydrographic data and current-meter observations in the core of the undercurrent in the northern CCS. In the linear model, variability in the predominantly equatorward wind stress along the U.S. West Coast produces episodic reversals to poleward flow over the northern CCS slope during summer. However, reproducing the persistence of the undercurrent during late summer requires additional incoming energy from sea level variability applied south of the region of the strongest wind forcing. The relative importance of the barotropic and baroclinic components of the modeled alongshore pressure gradient changes with latitude. In contrast to the southern and central portions of the CCS, the baroclinic component of the alongshore pressure gradient provides the primary poleward force at CUC depths over the northern CCS slope. At time scales from weeks to months, the alongshore pressure gradient force is primarily balanced by the Coriolis force associated with onshore flow.
    Description: This work was supported by grants to B. Hickey from the Coastal Ocean Program of the National Oceanic and Atmospheric Administration (NOAA) (NA17OP2789 and NA09NOS4780180) and the National Science Foundation (NSF) (OCE0234587 and OCE0942675) as part of the Ecology of Harmful Algal Blooms Pacific Northwest (ECOHAB PNW) and Pacific Northwest Toxin (PNWTOX) projects. I. Shulman was supported by the Naval Research Laboratory.
    Description: 2014-07-01
    Keywords: Geographic location/entity ; Continental shelf/slope ; Circulation/ Dynamics ; Baroclinic flows ; Coastal flows ; Models and modeling ; Model evaluation/performance ; Variability ; Intraseasonal variability ; Seasonal variability
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 113 (1992), S. 517-526 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Three sets of zooplankton trawls with multiple nets were deployed in June 1990 within a deep (2000 m) scattering layer overlying the central hydrothermal vent field on the Endeavour segment of Juan de Fuca Ridge in the northeast Pacific. Trawl data were collected concurrently with temperature, salinity, light attenuation and acoustic (150 kHz) backscatter profiles. We describe the composition, size distribution and biomass of zooplankton collected in the net samples, and compare biomass distributions with physical characteristics of the hydrothermal plume. The nine discrete trawl samples (1 mm mesh) contained zooplankton biomass of between 0.3 and 21 mg dry wt m-3 with the highest biomass samples coincident with large and positive (+20 dB) acoustic backscatter anomalies observed above the top of the hydrothermal plume. Lowest biomass samples were coincident with small, negative (-5 dB) backscatter anomalies within the core of the plume. Results suggest that the region within a hundred meters of the top of the plume was a zone of enhanced zooplankton concentration associated with nutrition enrichment related to the plume. In contrast, the plume core was a zone of faunal depletion, presumably linked to adverse plume chemistry. The species composition and size distribution profiles from net samples revealed that the epi-plume assemblage contained several trophic levels of bathypelagic fauna, but did not contain benthic larvae or vent-related benthopelagic fauna.
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  • 10
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Understanding how larvae from extant hydrothermal vent fields colonize neighbouring regions of the mid-ocean ridge system remains a major challenge in oceanic research. Among the factors considered important in the recruitment of deep-sea larvae are metabolic lifespan, the connectivity of the ...
    Type of Medium: Electronic Resource
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