Now showing items 103-122 of 899

    • Barotropic tide in the northeast South China Sea 

      Beardsley, Robert C.; Duda, Timothy F.; Lynch, James F.; Irish, James D.; Ramp, Steven R.; Chiu, Ching-Sang; Tang, Tswen Yung; Yang, Yiing-Jang; Fang, Guohong (IEEE, 2004-10)
      A moored array deployed across the shelf break in the northeast South China Sea during April-May 2001 collected sufficient current and pressure data to allow estimation of the barotropic tidal currents and energy fluxes ...
    • Barotropic tides on the southeast New England shelf : a view from a hybrid data assimilative modeling approach 

      He, Ruoying; Wilkin, John L. (American Geophysical Union, 2006-08-01)
      A high-resolution hybrid data assimilative (DA) modeling system is used to study barotropic tides and tidal dynamics on the southeast New England shelf. In situ observations include tidal harmonics of 5 major tidal ...
    • Basin-scale tidal measurements using acoustic tomography 

      Headrick, Robert H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-09)
      Travel-times of acoustic signals were measured between a bottom-mounted source near Oahu and four bottom-mounted receivers located near Washington, Oregon, and California in 1988 and 1989. This paper discusses the observed ...
    • Bathymetric controls on sediment transport in the Hudson River estuary : lateral asymmetry and frontal trapping 

      Ralston, David K.; Geyer, W. Rockwell; Warner, John C. (American Geophysical Union, 2012-10-17)
      Analyses of field observations and numerical model results have identified that sediment transport in the Hudson River estuary is laterally segregated between channel and shoals, features frontal trapping at multiple ...
    • Beaked whales echolocate on prey 

      Johnson, Mark P.; Madsen, Peter T.; Zimmer, Walter M. X.; Aguilar De Soto, Natacha; Tyack, Peter L. (Royal Society, 2004-12-07)
      Beaked whales (Cetacea: Ziphiidea) of the genera Ziphius and Mesoplodon are so difficult to study that they are mostly known from strandings. How these elusive toothed whales use and react to sound is of concern because ...
    • 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 ...
    • 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 ...
    • Behavioral impacts of disentanglement of a right whale under sedation and the energetic cost of entanglement 

      van der Hoop, Julie M.; 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 ...
    • Biases in the air-sea flux of CO2 resulting from ocean surface temperature gradients 

      Ward, Brian; Wanninkhof, Rik; McGillis, Wade R.; Jessup, Andrew T.; DeGrandpre, Michael D.; Hare, Jeffrey E.; Edson, James B. (American Geophysical Union, 2004-06-30)
      The difference in the fugacities of CO2 across the diffusive sublayer at the ocean surface is the driving force behind the air-sea flux of CO2. Bulk seawater fugacity is normally measured several meters below the surface, ...
    • Bio-optical footprints created by mesoscale eddies in the Sargasso Sea 

      Siegel, David A.; Peterson, P.; McGillicuddy, Dennis J.; Maritorena, S.; Nelson, N. B. (American Geophysical Union, 2011-07-14)
      We investigate the bio-optical footprints made by mesoscale eddies in the Sargasso Sea and the processes that create them through an eddy-centric approach. Many (>10,000) eddies are identified and followed in time using ...
    • Biogeochemical processes at hydrothermal vents : microbes and minerals, bioenergetics, and carbon fluxes 

      Holden, James F.; Breier, John A.; Rogers, Karyn L.; Schulte, Mitchell D.; Toner, Brandy M. (The Oceanography Society, 2012-03)
      Hydrothermal vents are among the most biologically active regions of the deep ocean. However, our understanding of the limits of life in this extreme environment, the extent of biogeochemical transformation that occurs in ...
    • Biological control of the vernal population increase of Calanus finmarchicus on Georges Bank 

      Li, Xingwen; McGillicuddy, Dennis J.; Durbin, Edward G.; Wiebe, Peter H. (2006-03-14)
      An adjoint data assimilation approach was used to quantify the physical and biological controls on Calanus finmarchicus N3 to C stages on Georges Bank and its nearby environs. The mean seasonal cycle of vertically-averaged ...
    • Bioluminescence intensity modeling and sampling strategy optimization 

      Shulman, Igor; Kindle, J. C.; McGillicuddy, Dennis J.; Moline, Mark A.; Haddock, Steven H. D.; Nechaev, D. A.; Phelps, M. W. (American Meteorological Society, 2005-08)
      The focus of this paper is on the development of methodology for short-term (1–3 days) oceanic bioluminescence (BL) predictions and the optimization of spatial and temporal bioluminescence sampling strategies. The approach ...
    • Biomimetic oscillating foil propulsion to enhance underwater vehicle agility and maneuverability 

      Licht, Stephen Carl (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-06)
      Inspired by the swimming abilities of marine animals, this thesis presents "Finnegan the RoboTurtle", an autonomous underwater vehicle (AUV) powered entirely by four flapping foils. Biomimetic actuation is shown to produce ...
    • Blooms of the toxic dinoflagellate Alexandrium fundyense in the Gulf of Maine : investigations using physical-biological model 

      Stock, Charles A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2005-02)
      Blooms of the toxic dinoflagellate Alexandriumfundyense are annually recurrent in the western Gulf of Maine (WGOM) and pose a serious economic and public health threat. Transitions between and vital rates within the life ...
    • Bottom boundary layer stress measurements with BASS tripods : data report STRESS 1988-89 

      Gross, Thomas F.; Williams, Albert J. (Woods Hole Oceanographic Institution, 1993-11)
      Two Benthic Acoustic Stress Sensor (BASS) equipped tripods were deployed in the Sediment Transport Events on Shelves and Slopes (STRESS) experiment in November, 1988, and recovered in March, 1989, on the California Shelf. ...
    • Bottom interacting sound at 50 km range in a deep ocean environment 

      Udovydchenkov, Ilya A.; Stephen, Ralph A.; Duda, Timothy F.; Bolmer, S. Thompson; Worcester, Peter F.; Dzieciuch, Matthew A.; Mercer, James A.; Andrew, Rex K.; Howe, Bruce M. (Acoustical Society of America, 2012-10)
      Data collected during the 2004 Long-range Ocean Acoustic Propagation Experiment provide absolute intensities and travel times of acoustic pulses at ranges varying from 50 to 3200 km. In this paper a subset of these data ...
    • Bottom side-roll feeding by humpback whales (Megaptera novaeangliae) in the southern Gulf of Maine, U.S.A 

      Ware, Colin; Wiley, David N.; Friedlaender, Ari S.; Weinrich, Mason T.; Hazen, Elliott L.; Bocconcelli, Alessandro; Parks, Susan E.; Stimpert, Alison K.; Thompson, Michael A.; Abernathy, Kyler (John Wiley & Sons, 2013-07-24)
      Humpback whales (Megaptera novaeangliae) are known for the variety and complexity of their feeding behaviors. Here we report on the use of synchronous motion and acoustic recording tags (DTAGs) to provide the first detailed ...
    • Bottom stress generation and sediment transport over the shelf and slope off of Lake Superior's Keweenaw peninsula 

      Churchill, James H.; Williams, Albert J.; Ralph, Elise A. (American Geophysical Union, 2004-10-30)
      Data from near-bottom instruments reveal that the mechanisms responsible for generating bottom stresses and resuspending sediment over the shelf and slope off of Lake Superior's Keweenaw peninsula exhibit distinct seasonal ...