Now showing items 2404-2423 of 4924

  • K-distribution fading models for Bayesian estimation of an underwater acoustic channel 

    Laferriere, Alison Beth (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-02)
    Current underwater acoustic channel estimation techniques generally apply linear MMSE estimation. This approach is optimal in a mean square error sense under the assumption that the impulse response fluctuations are well ...
  • The Kallisti Limnes, carbon dioxide-accumulating subsea pools 

    Camilli, Richard; Nomikou, Paraskevi; Escartin, Javier; Ridao, Pere; Mallios, Angelos; Kilias, Stephanos P.; Argyraki, Ariadne; Andreani, Muriel; Ballu, Valerie; Campos, Ricard; Deplus, Christine; Gabsi, Taoufic; Garcia, Rafael; Gracias, Nuno; Hurtos, Natalia; Magi, Lluis; Mevel, Catherine; Moreira, Manuel; Palomeras, Narcis; Pot, Olivier; Ribas, David; Ruzie, Lorraine; Sakellariou, Dimitris (Nature Publishing Group, 2015-07-16)
    Natural CO2 releases from shallow marine hydrothermal vents are assumed to mix into the water column, and not accumulate into stratified seafloor pools. We present newly discovered shallow subsea pools located within the ...
  • Kalman filter estimation of underwater vehicle position and attitude using Doppler velocity aided inertial motion unit 

    Leader, Daniel Eugene (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1994-09)
    This Paper explores the use of an extended Kalman filter to provide real-time estimates of underwater vehicle position and attitude. The types of previously available sensors are detailed including strapdown accelerometers, ...
  • KAPEX RAFOS float data report 1997-1999 part B : float trajectories at 750 m in the Benguela Current 

    Richardson, Philip L.; Pacheco, M. A.; Wooding, Christine M. (Woods Hole Oceanographic Institution, 2003-06)
    Thirty-two RAFOS floats were launched at the depth of intermediate water, near 750 m, in the Benguela Current along 30S and its extension along 7W. The floats were tracked acoustically for two years during 1997–1999. ...
  • The Keck Carbon Cycle AMS Laboratory, University of California, Irvine : status report 

    Beverly, Robert K.; Beaumont, Will; Tauz, Denis; Ormsby, Kaelyn M.; von Reden, Karl F.; Santos, Guaciara M.; Southon, John R. (Dept. of Geosciences, University of Arizona, 2010-08)
    We present a status report of the accelerator mass spectrometry (AMS) facility at the University of California, Irvine, USA. Recent spectrometer upgrades and repairs are discussed. Modifications to preparation laboratory ...
  • A key to the stromateoid fishes 

    Haedrich, Richard L.; Horn, Michael H. (Woods Hole Oceanographic Institution, 1972-03)
    Our primary purpose in preparing "A Key to the Stromateoid Fishes" is to provide field workers and curators with a convenient and concise aid for the identification of the diverse species in this somewhat difficult ...
  • Kinematic evaluation of end effector design 

    Edwards, Gary W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-09)
    The complex, many degree-of-freedom end effectors at the leading edge of technology would be unusable in the sea bottom research environment. Simpler designs are required to provide adequate reliability for subsea ...
  • The kinematics and dynamics of the New England continental shelf and shelf/slope front 

    Flagg, Charles Noel (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1977-04)
    A 37 day long field program was carried out in March 1974 on the New England continental shelf break to study the current and hydrographic structure and variability on the shelf and in the shelf/slope front. A second ...
  • Kinematics and energetics of the mesoscale mid-ocean circulation : MODE 

    Richman, James G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1976-09)
    The temporal and spatial variability of low frequency moored temperature and velocity observations, obtained as part of the Mid-Ocean Dynamics Experiment (MODE), are analyzed to study the kinematics and energetics of ...
  • Kinetic constraints on acylated homoserine lactone-based quorum sensing in marine environments 

    Hmelo, Laura R.; Van Mooy, Benjamin A. S. (Inter-Research, 2009-02-04)
    Quorum sensing (QS) via acylated homoserine lactones (AHLs) was discovered in the ocean, yet AHLs are expected to be very short-lived at seawater pH due to rapid abiotic degradation. Quorum quenching, the enzymatic degradation ...
  • Kinetic processes of mantle minerals 

    Koga, Kenneth T. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-09)
    This dissertation discusses the experimental results designed to constrain the processes of MORB generation. The main focus of this study is to investigate the location and the related processes of the transformation ...
  • Kinetics of H2–O2–H2O redox equilibria and formation of metastable H2O2 under low temperature hydrothermal conditions 

    Foustoukos, Dionysis I.; Houghton, Jennifer L.; Seyfried, William E.; Sievert, Stefan M.; Cody, George D. (2010-07-23)
    Hydrothermal experiments were conducted to evaluate the kinetics of H2(aq) oxidation in the homogeneous H2-O2-H2O system at conditions reflecting subsurface/near-seafloor hydrothermal environments (55-250 oC and 242-497 ...
  • King Abdullah University of Science and Technology (KAUST) mooring deployment cruise and fieldwork report, fall 2008 R/V Oceanus voyage 449-5, October 9, 2008–October 14, 2008 

    Farrar, J. Thomas; Lentz, Steven J.; Churchill, James H.; Bouchard, Paul R.; Smith, Jason C.; Kemp, John N.; Lord, Jeffrey; Allsup, Geoffrey P.; Hosom, David S. (Woods Hole Oceanographic Institution, 2009-07)
    King Abdullah University of Science and Technology (KAUST) is being built near Thuwal, Saudi Arabia with the goal of becoming a world-class, graduate-level research university. As a step toward this goal, KAUST has ...
  • Knorr 147 leg v hydrographic data report : Labrador Sea Deep Convection Experiment 

    Zimmerman, Sarah; McKee, Theresa K.; Pickart, Robert S.; Smethie, William M. (Woods Hole Oceanographic Institution, 2000-05)
    Between 2 February and 20 March 1997, the first phase of the Labrador Sea Deep Convection Experiment was carried out on R/V Knorr, during which 127 hydrographic stations were occupied throughout the Labrador basin. This ...
  • The Kuroshio Extension : a leading mechanism for the seasonal sea-level variability along the west coast of Japan 

    Ma, Chao; Yang, Jiayan; Wu, Dexing; Lin, Xiaopei (2009-10-08)
    Sea level changes coherently along the two coasts of Japan on the seasonal time scale. AVISO satellite altimetry data and OFES (OGCM for the Earth Simulator) results indicate that the variation propagates clockwise from ...
  • The Kuroshio Extension and its recirculation gyres 

    Jayne, Steven R.; Hogg, Nelson G.; Waterman, Stephanie N.; Rainville, Luc; Donohue, Kathleen A.; Watts, D. Randolph; Tracey, Karen L.; McClean, Julie L.; Maltrud, Mathew E.; Qiu, Bo; Chen, Shuiming; Hacker, Peter (2009-07-01)
    This paper reports on the strength and structure of the Kuroshio Extension and its recirculation gyres. In the time average, quasi-permanent recirculation gyres are found to the north and south of the Kuroshio Extension ...
  • The Kuroshio Extension northern recirculation gyre : profiling float measurements and forcing mechanism 

    Qiu, Bo; Chen, Shuiming; Hacker, Peter; Hogg, Nelson G.; Jayne, Steven R.; Sasaki, Hideharu (American Meteorological Society, 2008-08)
    Middepth, time-mean circulation in the western North Pacific Ocean (28°–45°N, 140°–165°E) is investigated using drift information from the profiling floats deployed in the Kuroshio Extension System Study (KESS) and the ...
  • Laboratory and field-based investigations of subsurface geochemical processes in seafloor hydrothermal systems 

    Reeves, Eoghan P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-06)
    This thesis presents the results of four discrete investigations into processes governing the organic and inorganic chemical composition of seafloor hydrothermal fluids in a variety of geologic settings. Though Chapters ...
  • Laboratory desalination experiments with some algal toxins 

    Laycock, Maurice V.; Anderson, Donald M.; Naar, Jerome; Goodman, Allan; Easy, Dorothy J.; Li, Aifeng; Quilliam, Michael A.; Al Jamali, Ebrahim; Alshihi, Rashid (2011-12)
    Over the last several decades, countries throughout the world have experienced an escalating and worrisome trend in the incidence of harmful algal blooms (HABs). A concern is that highly potent algal toxins might be ...
  • Laboratory evaluation of laser-induced breakdown spectroscopy (LIBS) as a new in situ chemical sensing technique for the deep ocean 

    Michel, Anna Pauline Miranda (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-09)
    Present-day expeditionary oceanography is beginning to shift from a focus on short- term ship and submersible deployments to an ocean observatory mode where long- term temporally-focused studies are feasible. As a result, ...