Now showing items 291-310 of 903

    • 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 ...
    • Evaluation of the National Oceanic and Atmospheric Administration/Coupled-Ocean Atmospheric Response Experiment (NOAA/COARE) air-sea gas transfer parameterization using GasEx data 

      Hare, Jeffrey E.; Fairall, Christopher W.; McGillis, Wade R.; Edson, James B.; Ward, Brian; Wanninkhof, Rik (American Geophysical Union, 2004-07-16)
      During the two recent GasEx field experiments, direct covariance measurements of air-sea carbon dioxide fluxes were obtained over the open ocean. Concurrently, the National Oceanic and Atmospheric Administration/Coupled-Ocean ...
    • Evaluation of transport relative to the tidal mixing front on southern Georges Bank 

      Katrein, Jody M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2001-09)
      As part of Phase III of the U.S. GLOBEC Georges Bank program, drogued drifters and dye tracer were released into the pycnocline on the southern flank of Georges Bank to measure advective and diffusive transport relative ...
    • Evaluation of vector sensors for adaptive equalization in underwater acoustic communication 

      Lewis, Matthew R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2014-09)
      Underwater acoustic communication is an extremely complex field that faces many challenges due to the time-varying nature of the ocean environment. Vector sensors are a proven technology that when utilizing their directional ...
    • Evidence for hydrogen oxidation and metabolic plasticity in widespread deep-sea sulfur-oxidizing bacteria 

      Anantharaman, Karthik; Breier, John A.; Sheik, Cody S.; Dick, Gregory J. (2012-11-08)
      Hydrothermal vents are a well-known source of energy that powers chemosynthesis in the deep sea. Recent work suggests that microbial chemosynthesis is also surprisingly pervasive throughout the dark oceans, serving as a ...
    • Evolution of a physical and biological front from upwelling to relaxation 

      Zhang, Yanwu; Bellingham, James G.; Ryan, John P.; Godin, Michael A. (Elsevier, 2015-08-08)
      Fronts influence the structure and function of coastal marine ecosystems. Due to the complexity and dynamic nature of coastal environments and the small scales of frontal gradient zones, frontal research is difficult. To ...
    • Exact reconstruction of ocean bottom velocity profiles from monochromatic scattering data 

      Merab, Andre A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-01)
      This thesis presents the theoretical and computational underpinnings of a novel approach to the determination of the acoustic parameters of the ocean bottom using a monochromatic source. The problem is shown to be ...