Now showing items 2171-2190 of 6354

    • Formation of intrathermocline eddies at ocean fronts by wind-driven destruction of potential vorticity 

      Thomas, Leif N. (2008-02)
      A mechanism for the generation of intrathermocline eddies (ITEs) at wind-forced fronts is examined using a high resolution numerical simulation. Favorable conditions for ITE formation result at fronts forced by “down-front” ...
    • Formation of intrathermocline lenses by eddy–wind interaction 

      McGillicuddy, Dennis J. (American Meteorological Society, 2015-02)
      Mesoscale intrathermocline lenses are observed throughout the World Ocean and are commonly attributed to water mass anomalies advected from a distant origin. An alternative mechanism of local generation is offered herein, ...
    • Formation of submarine lava channel textures : insights from laboratory simulations 

      Garry, W. Brent; Gregg, Tracy K. P.; Soule, Samuel A.; Fornari, Daniel J. (American Geophysical Union, 2006-03-28)
      Laboratory simulations using polyethylene glycol (PEG) extruded at a constant rate and temperature into a tank with a uniform basal slope and filled with a cold sucrose solution generate channels that are defined by ...
    • Formation of Subtropical Mode Water in a high-resolution ocean simulation of the Kuroshio Extension region 

      Rainville, Luc; Jayne, Steven R.; McClean, Julie L.; Maltrud, Mathew E. (2007-03-09)
      A high-resolution numerical model is used to examine the formation and variability of the North Pacific Subtropical ModeWater (STMW) over a 3-year period. The STMW distribution is found to be highly variable in both space ...
    • Formation of the Isthmus of Panama 

      O’Dea, Aaron; Lessios, Harilaos; Coates, Anthony; Eytan, Ron I.; Restrepo-Moreno, Sergio A.; Cione, Alberto L.; Collins, Laurel S.; de Queiroz, Alan; Farris, David W.; Norris, Richard D.; Stallard, Robert; Woodburne, Michael; Aguilera, Orangel; Aubry, Marie-Pierre; Berggren, William A.; Budd, Ann F.; Cozzuol, Mario A.; Coppard, Simon E.; Duque-Caro, Hermann; Finnegan, Seth; Gasparini, Germán M.; Grossman, Ethan L.; Johnson, Kenneth G.; Keigwin, Lloyd D.; Knowlton, Nancy; Leigh, Egbert G.; Leonard-Pingel, Jill S.; Marko, Peter B.; Pyenson, Nicholas; Rachello-Dolmen, Paola G.; Soibelzon, Esteban; Soibelzon, Leopoldo; Todd, Jonathan A.; Vermeij, Geerat J.; Jackson, Jeremy B. C. (American Association for the Advancement of Science, 2016-08-17)
      The formation of the Isthmus of Panama stands as one of the greatest natural events of the Cenozoic, driving profound biotic transformations on land and in the oceans. Some recent studies suggest that the Isthmus formed ...
    • Fortnightly tides and subtidal motions in a choked inlet 

      MacMahan, Jamie; van de Kreeke, Jacobus; Reniers, Ad; Elgar, Steve; Raubenheimer, Britt; Thornton, Ed B.; Weltmer, Micah; Rynne, Patrick; Brown, Jenna (Elsevier, 2014-04-12)
      Amplitudes of semi-diurnal tidal fluctuations measured at an ocean inlet system decay nearly linearly by 87% between the ocean edge of the offshore ebb-tidal delta and the backbay. A monochromatic, dynamical model for a ...
    • Forum for Arctic Modeling and Observational Synthesis (FAMOS) : past, current, and future activities 

      Proshutinsky, Andrey; Steele, Michael; Timmermans, Mary-Louise (John Wiley & Sons, 2016-06-03)
      The overall goal of the Forum for Arctic Modeling and Observational Synthesis (FAMOS) community activities reported in this special issue is to enhance understanding of processes and mechanisms driving Arctic Ocean marine ...
    • Forward scattering of a pulsed continuous wave signal through laminar and turbulent thermal plumes 

      Bowen, Stephen G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1993-09)
      The results of an experiment examining the forward propagation or an acoustic signal through a buoyant plume are discussed. Two distinct testing sights were used. One made use of a small fresh water tank in NUWC to provide ...
    • Forward sound propagation around seamounts : application of acoustic models to the Kermit-Roosevelt and Elvis seamounts 

      Kim, Hyun Joe (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2009-06)
      The Basin Acoustic Seamount Scattering Experiment (BASSEX) of 2004 was conducted to measure forward-scattering around the Kermit-Roosevelt Seamount Complex in the Northeast Pacific. The BASSEX experiment was focused on ...
    • A fossil winonaite-like meteorite in Ordovician limestone : a piece of the impactor that broke up the L-chondrite parent body? 

      Schmitz, Birger; Huss, Gary R.; Meier, Matthias M. M.; Peucker-Ehrenbrink, Bernhard; Church, Ross P.; Cronholm, Anders; Davies, Melvyn B.; Heck, Philipp R.; Johansen, Anders; Keil, Klaus; Kristiansson, Per; Ravizza, Gregory E.; Tassinari, Mario; Terfelt, Fredrik (Elsevier, 2014-06-06)
      About a quarter of all meteorites falling on Earth today originate from the breakup of the L-chondrite parent body ∼470 Ma∼470 Ma ago, the largest documented breakup in the asteroid belt in the past ∼3 Ga∼3 Ga. A window ...
    • Four current meter models compared in strong currents in Drake Passage 

      Watts, D. Randolph; Kennelly, Maureen A.; Donohue, Kathleen A.; Tracey, Karen L.; Chereskin, Teresa K.; Weller, Robert A.; Victoria, Ivan (American Meteorological Society, 2013-10)
      Seven current meters representing four models on a stiffly buoyed mooring were placed for an 11-month deployment to intercompare their velocity measurements: two vector-measuring current meters (VMCMs), two Aanderaa recording ...
    • Four hydrophone array for acoustic three-dimensional location 

      Watkins, William A.; Schevill, William E. (Woods Hole Oceanographic Institution, 1971-10)
      This report describes a non-rigid, floating, four-hydrophone array that can give accurate three-dimensional locations for certain underwater sound sources, particularly for those that are close. For more distant sounds, ...
    • FOZO, HIMU, and the rest of the mantle zoo 

      Stracke, Andreas; Hofmann, Albrecht W.; Hart, Stanley R. (American Geophysical Union, 2005-05-19)
      The parameter μ describes the 238U/204Pb ratio of an Earth reservoir. Mantle domains labeled HIMU (high μ) originally defined reservoirs with highly radiogenic Pb isotope ratios observed in basalts from a select number of ...
    • Fractional solubility of aerosol iron : synthesis of a global-scale data set 

      Sholkovitz, Edward R.; Sedwick, Peter N.; Church, Thomas M.; Baker, Alexander R.; Powell, Claire F. (2012-04-06)
      Aerosol deposition provides a major input of the essential micronutrient iron to the open ocean. A critical parameter with respect to biological availability is the proportion of aerosol iron that enters the oceanic ...
    • Fractional solubility of aerosol iron : synthesis of a global-scale data set 

      Sholkovitz, Edward R.; Sedwick, Peter N.; Church, Thomas M.; Baker, Alexander R.; Powell, Claire F. (2011-10-05)
      Aerosol deposition provides a major input of the essential micronutrient iron to the open ocean. A critical parameter with respect to bioavailability is the proportion of aerosol iron that enters the oceanic dissolved ...
    • Fractional solubility of aerosol iron : synthesis of a global-scale data set [revised] 

      Sholkovitz, Edward R.; Sedwick, Peter N.; Church, Thomas M.; Baker, Alexander R.; Powell, Claire F. (2012-03-26)
      Aerosol deposition provides a major input of the essential micronutrient iron to the open ocean. A critical parameter with respect to biological availability is the proportion of aerosol iron that enters the oceanic ...
    • Fractionation of the methane isotopologues 13CH4, 12CH3D, and 13CH3D during aerobic oxidation of methane by Methylococcus capsulatus (Bath) 

      Wang, David T.; Welander, Paula V.; Ono, Shuhei (2016-07)
      Aerobic oxidation of methane plays a major role in reducing the amount of methane emitted to the atmosphere from freshwater and marine settings. We cultured an aerobic methanotroph, Methylococcus capsulatus (Bath) at 30 ...
    • Fracture propagation to the base of the Greenland Ice Sheet during supraglacial lake drainage 

      Das, Sarah B.; Joughin, Ian; Behn, Mark D.; Howat, Ian M.; King, Matt A.; Lizarralde, Daniel; Bhatia, Maya P. (2008-02-20)
      Surface meltwater that reaches the base of an ice sheet creates a mechanism for the rapid response of ice flow to climate change. The process whereby such a pathway is created through thick, cold ice has not, however, ...
    • Fragment reattachment, reproductive status, and health indicators of the invasive colonial tunicate Didemnum vexillum with implications for dispersal 

      Morris, James A.; Carman, Mary R. (2012-04)
      The invasive colonial tunicate Didemnum vexillum is now widespread in coastal and offshore waters of New England, USA. D. vexillum can inflict ecological and economic damage through biofouling and habitat modification. ...
    • A framework for a marine biodiversity observing network within changing continental shelf seascapes 

      Muller-Karger, Frank E.; Kavanaugh, Maria T.; Montes, Enrique; Balch, William M.; Breitbart, Mya; Chavez, Francisco P.; Doney, Scott C.; Johns, Elizabeth M.; Letelier, Ricardo M.; Lomas, Michael W.; Sosik, Heidi M.; White, Angelicque E. (The Oceanography Society, 2014-06)
      Continental shelves and the waters overlying them support numerous industries as diverse as tourism and recreation, energy extraction, fisheries, transportation, and applications of marine bio-molecules (e.g., agribusiness, ...