Now showing items 552-571 of 7907

    • Beaked whales respond to simulated and actual navy sonar 

      Tyack, Peter L.; Zimmer, Walter M. X.; Moretti, David J.; Southall, Brandon L.; Claridge, Diane E.; Durban, John W.; Clark, Christopher W.; D'Amico, Angela; DiMarzio, Nancy A.; Jarvis, Susan; McCarthy, Elena; Morrissey, Ronald; Ward, Jessica; Boyd, Ian L. (Public Library of Science, 2011-03-14)
      Beaked whales have mass stranded during some naval sonar exercises, but the cause is unknown. They are difficult to sight but can reliably be detected by listening for echolocation clicks produced during deep foraging ...
    • A beam pattern design procedure for multidimensional sonar arrays empolying minimum variance beamforming 

      Richards, Randall G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-09)
      This paper develops a beam pattern design procedure for general multidimensional irregular sonar arrays that incorporates the not well understood effects of array geometry into the design process. The procedure is ...
    • A beamforming video recorder for integrated observations of dolphin behavior and vocalizations 

      Ball, Keenan R.; Buck, John R. (Acoustical Society of America, 2005-03)
      In this Letter we describe a beamforming video recorder consisting of a video camera at the center of a 16 hydrophone array. A broadband frequency-domain beamforming algorithm is used to estimate the azimuth and elevation ...
    • Beaufort Gyre Freshwater Experiment : deployment operations and technology 2003 

      Ostrom, William M.; Kemp, John N.; Krishfield, Richard A.; Proshutinsky, Andrey (Woods Hole Oceanographic Institution, 2004-01)
      The Beaufort Gyre Freshwater Experiment (BGFE) observational program was designed to measure the freshwater content of the upper ocean and sea ice in the Beaufort Gyre of the Arctic Ocean using bottom-tethered moorings, ...
    • Beaufort Gyre freshwater reservoir : state and variability from observations 

      Proshutinsky, Andrey; Krishfield, Richard A.; Timmermans, Mary-Louise; Toole, John M.; Carmack, Eddy C.; McLaughlin, Fiona A.; Williams, William J.; Zimmermann, Sarah; Itoh, Motoyo; Shimada, Koji (American Geophysical Union, 2009-06-24)
      We investigate basin-scale mechanisms regulating anomalies in freshwater content (FWC) in the Beaufort Gyre (BG) of the Arctic Ocean using historical observations and data collected in 2003–2007. Specifically, the mean ...
    • The Beaufort Gyre Observing System 2004 : mooring recovery and deployment operations in pack ice 

      Kemp, John N.; Newhall, Kris; Ostrom, William M.; Krishfield, Richard A.; Proshutinsky, Andrey (Woods Hole Oceanographic Institution, 2005-05)
      Situated beneath the Arctic perennial ice pack, the principal components of the Beaufort Gyre Observing System are three deep-ocean bottom-tethered moorings with CTD and velocity profilers, upward looking sonars for ice ...
    • Behavior of lobsters (Homarus americanus) in a semi-natural environment at ambient temperatures and under thermal stress 

      Stein, Lauren; Jacobson, Stewart; Atema, Jelle (Woods Hole Oceanographic Institution, 1975-10)
      In January, 1974 we established semi-natural habitats in two 10ft. diameter, octagonal aquaria, with five lobsters (Homarus americanus) each, and several Cancer irroratus, Anguilla rostrata, Pseudopleuronectes americanus and ...
    • Behavioral ecology of coral reef fishes at spawning aggregation sites 

      Sancho, Gorka (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-04)
      Coral reef fishes aggregate to spawn on certain locations of reefs. This thesis is an extensive investigation of the behavioral and ecological relations between spawning reef fishes, predators and their environment at a ...
    • Behavioral impacts of disentanglement of a right whale under sedation and the energetic cost of entanglement 

      van der Hoop, Julie; Moore, Michael J.; Fahlman, Andreas; Bocconcelli, Alessandro; George, Clay; Jackson, Katharine; Miller, Carolyn A.; Morin, David; Pitchford, Thomas; Rowles, Teresa K.; Smith, Jamison; Zoodsma, Barb (2013-03)
      Protracted entanglement in fishing gear often leads to emaciation through reduced mobility and foraging ability, and energy budget depletion from the added drag of towing gear for months or years. We examined changes in ...
    • The behavioral physiology of labroid fishes 

      Curran, Mary C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-09)
      The family Labridae, or wrasses, is one of the most speciose fish families and is exceptional in its wide range of morphological and behavioral diversities. The cunner Tautogolabrus adspersus is one of two temperate-dwelling ...
    • Behavioral responses of invertebrate larvae to water column cues 

      Wheeler, Jeanette D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2016-02)
      Many benthic marine invertebrates have two-phase life histories, relying on planktonic larval stages for dispersal and exchange of individuals between adult populations. Historically, larvae were considered passive ...
    • The behaviour and ecology of the zebrafish, Danio rerio 

      Spence, Rowena; Gerlach, Gabriele; Lawrence, Christian; Smith, Carl (2007-03-07)
      The zebrafish is an important model organism in developmental genetics, neurophysiology and biomedicine, but little is known about its natural ecology and behaviour. It is a small, shoaling cyprinid, native to the flood-plains ...
    • Behaviour of the ocean DMS(P) pools in the Sargasso Sea viewed in a coupled physical-biogeochemical ocean model 

      Le Clainche, Yvonnick; Levasseur, Maurice; Vezina, Alain; Dacey, John W. H.; Saucier, Francois J. (National Research Council Canada, 2004-06-23)
      The dimethylsulfide (DMS) production model NODEM (Northern Oceans DMS Emission Model) was coupled with the water column ocean model GOTM (General Ocean Turbulence Model) that includes a two-equation k&150;ε turbulence ...
    • The Belukha whale : natural behavior and bioacoustics 

      Belkovitch, V. M.; Shekotov, M. N. (Woods Hole Oceanographic Institution, 1993)
      This monograph presents new original material on the behavior and bioacoustic signals of the belukha whale in its natural environment. A typological classification of the species' signals is based on researches that were ...
    • Benchmarking the two-dimensional finite difference synthetic seismogram code 

      Allen, Julie M.; Stephen, Ralph A. (Woods Hole Oceanographic Institution, 1991-09)
      During the past six months, the two-dimensional finite difference synthetic seismogram code was installed and run on a number of different computer systems. The results were compared for timing, accuracy and the ease with ...
    • A Benthic chamber with electric stirrer mixing 

      Dickinson, Wayne; Sayles, Frederick L. (Woods Hole Oceanographic Institution, 1992-02)
      Benthic chambers incorporating electric stirrer mixing have been designed and tested and have proven reliable during seven 18-31 day, 4300m ocean deployments. The chambers are 21 cm diameter by 31 cm long acrylic tubes ...
    • Benthic community metabolism in deep and shallow Arctic lakes during 13 years of whole–lake fertilization 

      Daniels, William C.; Kling, George W.; Giblin, Anne E. (2015-05)
      Benthic primary production and oxygen consumption are important components of lake biogeochemical cycling. We performed whole-lake nutrient manipulations in arctic Alaska to assess the controls of lake morphometry, ...
    • Benthic community response to ice algae and phytoplankton in Ny Ålesund, Svalbard 

      McMahon, Kelton W.; Ambrose, William G.; Johnson, Beverly J.; Sun, Ming-Yi; Lopez, Glenn R.; Clough, Lisa M.; Carroll, Michael L. (Inter-Research, 2006-04-03)
      We assessed the digestibility and utilization of ice algae and phytoplankton by the shallow, subtidal benthos in Ny Ålesund (Kongsfjord) on Svalbard (79°N, 12°E) using chlorophyll a (chl a), essential fatty acids (EFAs) ...