Now showing items 283-302 of 899

    • Environmental analysis and prediction of transmission loss in the region of the New England Shelfbreak 

      Hornick, Heather Rene (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2009-09)
      A confluence of several coastal oceanographic features creates an acoustically interesting region with high variability along the New England Shelfbreak. Determining the effect of the variability on acoustic propagation ...
    • Environmental controls, oceanography and population dynamics of pathogens and harmful algal blooms: connecting sources to human exposure 

      Dyble, Julianne; Bienfang, Paul; Dusek, Eva; Hitchcock, Gary; Holland, A. Fredrick; Laws, Edward A.; Lerczak, James A.; McGillicuddy, Dennis J.; Minnett, Peter; Moore, Stephanie K.; O'Kelly, Charles; Solo-Gabriele, Helena M.; Wang, John D. (BioMed Central, 2008-11-07)
      Coupled physical-biological models are capable of linking the complex interactions between environmental factors and physical hydrodynamics to simulate the growth, toxicity and transport of infectious pathogens and harmful ...
    • Environmental metabolomics : databases and tools for data analysis 

      Longnecker, Krista; Futrelle, Joe; Coburn, Elizabeth; Kido Soule, Melissa C.; Kujawinski, Elizabeth B. (Elsevier, 2015-06-19)
      Metabolomics is the study of small molecules, or ‘metabolites’, that are the end products of biological processes. While -omics technologies such as genomics, transcriptomics, and proteomics measure the metabolic potential ...
    • Error and uncertainty in estimates of Reynolds stress using ADCP in an energetic ocean state 

      Rapo, Mark A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-02)
      The challenge of estimating the Reynolds stress in an energetic ocean environment derives from the turbulence process overlapping in frequency, or in wavenumber, with the wave process. It was surmised that they would not ...
    • Eruption of a deep-sea mud volcano triggers rapid sediment movement 

      Feseker, Tomas; Boetius, Antje; Wenzhofer, Frank; Blandin, Jerome; Olu, Karine; Yoerger, Dana R.; Camilli, Richard; German, Christopher R.; de Beer, Dirk (Nature Publishing Group, 2014-11-11)
      Submarine mud volcanoes are important sources of methane to the water column. However, the temporal variability of their mud and methane emissions is unknown. Methane emissions were previously proposed to result from a ...
    • ESOM I and II final report 

      Bocconcelli, Alessandro; Berteaux, Henri O.; Frye, Daniel E.; Prindle, Bryce (Woods Hole Oceanographic Institution, 1991-11)
      An Engineering Surface Oceanographic Mooring (ESOM) program was initiated in 1989 by the Woods Hole Oceanographic Institution for the purpose of evaluating the long term, in situ performance of new moored array materials ...
    • Estimate of the bottom compressional wave speed profile in the northeastern South China Sea using "Sources of Opportunity" 

      Lin, Ying-Tsong; Lynch, James F.; Chotiros, Nick; Chen, Chi-Fang; Newhall, Arthur E.; Turgut, Altan; Schock, Steven G.; Chiu, Ching-Sang; Bartek, Louis R.; Liu, Char-Shine (IEEE, 2004-10)
      The inversion of a broad-band "source of opportunity" signal for bottom geoacoustic parameters in the northeastern South China Sea (SCS) is presented, which supplements the towed source and chirp sonar bottom inversions ...
    • Estimates of crustal transmission losses using MLM array processing 

      Scheer, Edward K. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1982-05)
      Seismic refraction experiments have been used extensively in the past thirty five years in investigations of the structure of the oceanic crust. The longer range of the refraction or wide angle reflection technique, on ...
    • Estimating a submesoscale diffusivity using a roughness measure applied to a tracer release experiment in the Southern Ocean 

      Boland, Emma J. D.; Shuckburgh, Emily; Haynes, Peter H.; Ledwell, James R.; Messias, Marie-Jose; Watson, Andrew J. (American Meteorological Society, 2015-06)
      The use of a measure to diagnose submesoscale isopycnal diffusivity by determining the best match between observations of a tracer and simulations with varying small-scale diffusivities is tested. Specifically, the robustness ...
    • Estimating nearshore bedform amplitudes with altimeters 

      Gallagher, E. L.; Elgar, Steve; Guza, R. T.; Thornton, Ed B. (2005-01-14)
      Estimates of the heights of large (0.1-0.4 m heights and 1-10 m horizontal lengths) migrating bedforms on a sandy beach made with fixed, single-point altimeters are similar to heights estimated from profiles across the ...
    • Estimating the benthic efflux of dissolved iron on the Ross Sea continental shelf 

      Marsay, Christopher M.; Sedwick, Peter N.; Dinniman, M. S.; Barrett, P. M.; Mack, S. L.; McGillicuddy, Dennis J. (John Wiley & Sons, 2014-11-03)
      Continental margin sediments provide a potentially large but poorly constrained source of dissolved iron (dFe) to the upper ocean. The Ross Sea continental shelf is one region where this benthic supply is thought to play ...
    • Estimation and correction of geometric distortions in side-scan sonar images 

      Cobra, Daniel Távora de Queiroz (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-03)
      This thesis introduces a new procedure for the enhancement of acoustic images of the bottom of the sea produced by side-scan sonars. Specifically, it addresses the problem of estimating and correcting geometric distortions ...
    • Estimation and tracking of rapidly time-varying broadband acoustic communication channels 

      Li, Weichang (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-02)
      This thesis develops methods for estimating wideband shallow-water acoustic communication channels. The very shallow water wideband channel has three distinct features: large dimension caused by extensive delay spread; ...
    • Estimation of planetary wave parameters from the data of the 1981 ocean acoustic tomography experiment 

      Chiu, Ching-Sang (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1985-08)
      Using the maximum-likelihood estimation method and minimization techniques, quasi-geostrophic wave solutions were fitted to the observations of the 1981 Ocean Acoustic Tomography Experiment. The experiment occupied a ...
    • Estimation of sea surface wave spectra using acoustic tomography 

      Miller, James H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-08)
      This thesis develops a new technique for estimating quasi-homogeneous and quasi-stationary sea surface wave frequency-direction spectra using acoustic tomography. The analysis of acoustic (mode and ray) phase and travel ...
    • Estuarine boundary layer mixing processes : insights from dye experiments 

      Chant, Robert J.; Geyer, W. Rockwell; Houghton, Robert; Hunter, Elias; Lerczak, James A. (American Meteorological Society, 2007-07)
      A series of dye releases in the Hudson River estuary elucidated diapycnal mixing rates and temporal variability over tidal and fortnightly time scales. Dye was injected in the bottom boundary layer for each of four releases ...
    • Estuarine exchange flow quantified with isohaline coordinates : contrasting long and short estuaries 

      Chen, Shih-Nan; Geyer, W. Rockwell; Ralston, David K.; Lerczak, James A. (American Meteorological Society, 2012-05)
      Isohaline coordinate analysis is used to compare the exchange flow in two contrasting estuaries, the long (with respect to tidal excursion) Hudson River and the short Merrimack River, using validated numerical models. The ...
    • Estuarine frontogenesis 

      Geyer, W. Rockwell; Ralston, David K. (American Meteorological Society, 2015-02)
      Model studies and observations in the Hudson River estuary indicate that frontogenesis occurs as a result of topographic forcing. Bottom fronts form just downstream of lateral constrictions, where the width of the estuary ...
    • Evaluation of electromagnetic source for ocean climate acoustic thermometry at Lake Seneca 

      Slavinsky, Mark; Bogolubov, Boris; Alelekov, Igor; Pigalov, Konstantin; Spiesberger, John L.; Boutin, Paul (Woods Hole Oceanographic Institution, 1993-02)
      A compact electromagnetic monopole source, requiring pressure equalization, was evaluated at the Naval Underwater Systems Center at Lake Seneca during July 1992 by scientists from the Institute of Applied Physics of the ...