Now showing items 596-615 of 854

  • The prediction, verification, and significance of flank jets at mid-ocean ridges 

    Lavelle, J. William; Thurnherr, Andreas M.; Mullineaux, Lauren S.; McGillicuddy, Dennis J.; Ledwell, James R. (The Oceanography Society, 2012-03)
    One aspect of ocean flow over mid-ocean ridges that has escaped much attention is the capacity of a ridge to convert oscillatory flows into unidirectional flows. Those unidirectional flows take the form of relatively narrow ...
  • Predictions and observations of seafloor infrasonic noise generated by sea surface orbital motion 

    Lindstrom, Timothy E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1991-09)
    A model is developed for the prediction of the seismo-acoustic noise spectrum in the microseism peak region (0.1 to 0.7 Hz). The model uses a theory developed by Cato [J. Acoust. Soc. Am., 89 , 1096-1112 (1991)] for an ...
  • Preface 

    Anderson, Donald M.; McGillicuddy, Dennis J.; DeGrasse, Stacey L.; Sellner, Kevin G.; Bricelj, V. Monica; Turner, Jefferson T.; Townsend, David W.; Kleindinst, Judith L. (2014-02)
    The Gulf of Maine (GOM) is a continental shelf sea in the northwest Atlantic, USA that supports highly-productive shellfisheries that are frequently contaminated by toxigenic Alexandrium fundyense blooms and outbreaks of ...
  • Preliminary acoustic and oceanographic observations from the ASIAEX 2001 South China Sea Experiment 

    Newhall, Arthur E.; Costello, Lawrence; Duda, Timothy F.; Dunn, James M.; Gawarkiewicz, Glen G.; Irish, James D.; Kemp, John N.; McPhee, Neil M.; Liberatore, Stephen P.; Lynch, James F.; Ostrom, William M.; Schroeder, Ted; Trask, Richard P.; von der Heydt, Keith (Woods Hole Oceanographic Institution, 2001-09)
    The Asian Seas International Experiment (ASIAEX) was a very successful scientific collaboration between the United States of America (USA), the People’s Republic of China (PRC), Taiwan (ROC), the Republic of Korea (ROK), ...
  • Preliminary acoustic and oceanographic observations from the winter Primer experiment 

    Newhall, Arthur E.; von der Heydt, Keith; Sperry, Brian J.; Gawarkiewicz, Glen G.; Lynch, James F. (Woods Hole Oceanographic Institution, 1998-10)
    A joint acoustics and physical oceanography experiment was conducted in the winter of 1997 on the shell break and continental slope south of New England in the Middle Atlantic Bight (figure 1). This experiment, Primer4, ...
  • Preliminary examination of the low-frequency ambient noise field in the South China Sea during the 2001 ASIAEX experiment 

    Wei, Ruey-Chang; Chen, Chi-Fang; Newhall, Arthur E.; Lynch, James F.; Duda, Timothy F.; Liu, Chih-Sheng; Lin, Po-Chang (IEEE, 2004-10)
    This correspondence presents a preliminary examination of the low frequency ambient noise field measured in the South China Sea component of the Asian Seas International Acoustics Experiment (ASIAEX), concentrating on the ...
  • A preliminary investigation into the ecology and behavior of blue whales (Balaenoptera musculus) in the Gulf of Corcovado, Chile 

    Bocconcelli, Alessandro; Hickmott, Leigh; Landea Briones, Rafaela; Howes, Gloria; Sayigh, Laela S. (Woods Hole Oceanographic Institution, 2014-09)
    A joint effort between WHOI and the Melimoyu Ecosystem Research Institute (MERI) sought to gain a better understanding of a population of blue whales (Balaenoptera musculus) in the Gulf of Corcovado, Chile. A cruise in ...
  • A preliminary study of shallow-water sonar issues : signal motion loss and reverberation noise 

    Stewart, W. Kenneth; Chu, Dezhang; Tang, Xiaoou (Woods Hole Oceanographic Institution, 1993-09)
    This preliminary investigation addresses key program elements for sonar sensing in a shallow-water environment to establish bounds on possible solutions and to reduce program uncertainty. The modeling and experimental ...
  • A probabilistic evaluation of tank ship damage in grounding events 

    Rawson, Charles E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-06)
    Recent international and domestic regulatory actions have resulted in significant changes to oil tanker designs and intensified attention on predicting tanker environmental performance following groundings or collisions. ...
  • Probabilistic evaluation of tankship damage in collision events 

    Crake, Kurtis W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-06)
    An analytical method for precidicting the extent of damage in ship collisions is developed. The method calculates both the longitudinal and transverse extents of damage for the struck ship as a function of collision ...
  • Process modeling studies of physical mechanisms of the formation of an anticyclonic eddy in the central Red Sea 

    Chen, Changsheng; Li, Ruixiang; Pratt, Lawrence J.; Limeburner, Richard; Beardsley, Robert C.; Bower, Amy S.; Jiang, Houshuo; Abualnaja, Yasser; Xu, Qichun; Lin, Huichan; Liu, Xuehai; Lan, Jian; Kim, Taewan (John Wiley & Sons, 2014-02-25)
    Surface drifters released in the central Red Sea during April 2010 detected a well-defined anticyclonic eddy around 23°N. This eddy was ∼45–60 km in radius, with a swirl speed up to ∼0.5 m/s. The eddy feature was also ...
  • Progressively communicating rich telemetry from autonomous underwater vehicles via relays 

    Murphy, Christopher A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-06)
    As analysis of imagery and environmental data plays a greater role in mission construction and execution, there is an increasing need for autonomous marine vehicles to transmit this data to the surface. Without access ...
  • A prony algorithm for shallow water waveguide analysis 

    Diemer, Ferdinand J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-08)
    Low frequency acoustic propagation in shallow water is examined from a normal mode context. By modelling the far field pressure field as a modal sum, propagating mode characteristics of wavenumber, initial phase, attennation ...
  • Propapation and attenuation characteristics of multilayered media 

    Koch, Stephen Patrick (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1979)
    An algorithm is proposed to numerically integrate the inhomogeneous depth-separated wave equation using a state variable technique. The solution obtained for two simple shallow water models is shown to agree well with ...
  • Propulsion in cubomedusae : mechanisms and utility 

    Colin, Sean P.; Costello, John H.; Katija, Kakani; Seymour, Jamie; Kiefer, Kristen (Public Library of Science, 2013-02-20)
    Evolutionary constraints which limit the forces produced during bell contractions of medusae affect the overall medusan morphospace such that jet propulsion is limited to only small medusae. Cubomedusae, which often possess ...
  • Propulsion optimization for ABE, an autonomous underwater vehicle (AUV) 

    Woodford, Thomas J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1991-09)
    The oceanographic community is moving towards unmanned autonomous vehicles to gather data and monitor scientific sites. The mission duration of these vehicles is dependent primarily on the power consumption of the ...
  • Protocols for calibrating multibeam sonar 

    Foote, Kenneth G.; Chu, Dezhang; Hammar, Terence R.; Baldwin, Kenneth C.; Mayer, Larry A.; Hufnagle, Lawrence C.; Jech, J. Michael (Acoustical Society of America, 2005-04)
    Development of protocols for calibrating multibeam sonar by means of the standard-target method is documented. Particular systems used in the development work included three that provide the water-column signals, namely ...
  • PSP toxin levels and plankton community composition and abundance in size-fractionated vertical profiles during spring/summer blooms of the toxic dinoflagellate Alexandrium fundyense in the Gulf of Maine and on Georges Bank, 2007, 2008, and 2010 : 1. Toxin levels 

    Deeds, Jonathan R.; Petitpas, Christian M.; Shue, Vangie; White, Kevin D.; Keafer, Bruce A.; McGillicuddy, Dennis J.; Milligan, Peter J.; Anderson, Donald M.; Turner, Jefferson T. (Elsevier, 2013-04-12)
    As part of the NOAA ECOHAB funded Gulf of Maine Toxicity (GOMTOX)1 project, we determined Alexandrium fundyense abundance, paralytic shellfish poisoning (PSP) toxin composition, and concentration in quantitatively-sampled ...
  • Quantification of coral heat shock proteins from individual coral polyps 

    Bromage, Erin; Carpenter, Lawrence; Kaattari, Stephen; Patterson, Mark (Inter-Research, 2009-02-11)
    The induction and regulation of heat shock proteins (hsps) is a significant defense mechanism that can preserve metabolic function and foster recovery from short-term stress events. Present coral sampling methodologies ...
  • Quantification of cuttlefish (Sepia officinalis) camouflage : a study of color and luminance using in situ spectrometry 

    Akkaynak, Derya; Allen, Justine J.; Mathger, Lydia M.; Chiao, Chuan-Chin; Hanlon, Roger T. (2012-11-19)
    Cephalopods are renowned for their ability to adaptively camouflage on diverse backgrounds. Sepia officinalis camouflage body patterns have been characterized spectrally in the laboratory but not in the field due to the ...