Now showing items 597-616 of 1292

    • Laboratory experiments on mesoscale vortices colliding with an island chain 

      Tanabe, Aya; Cenedese, Claudia (American Geophysical Union, 2008-04-17)
      The present laboratory study investigates the behavior of a self-propagating barotropic cyclonic vortex colliding perpendicularly with aligned circular cylinders and determines the condition for a vortex to bifurcate and ...
    • Laboratory experiments on mesoscale vortices interacting with two islands 

      Cenedese, Claudia; Adduce, Claudia; Fratantoni, David M. (American Geophysical Union, 2005-09-30)
      The present study investigates the interaction between a self-propagating cyclonic vortex with two right vertical cylinders and determines the conditions for a vortex to bifurcate into two or more vortices. As in previous ...
    • Laboratory experiments on the interaction of a buoyant coastal current with a canyon : application to the East Greenland Current 

      Sutherland, David A.; Cenedese, Claudia (American Meteorological Society, 2009-05)
      This paper presents a set of laboratory experiments focused on how a buoyant coastal current flowing over a sloping bottom interacts with a canyon and what controls the separation, if any, of the current from the upstream ...
    • Laboratory experiments on two coalescing axisymmetric turbulent plumes in a rotating fluid 

      Yamamoto, H.; Cenedese, Claudia; Caulfield, C. P. (2011-04-07)
      We investigate the early-time coalescence of two co-flowing axisymmetric turbulent plumes and the later-time flow of the induced vortices in a rotating, homogeneous fluid using laboratory experiments. The experiments ...
    • Laboratory experiments with tilted convective plumes on a centrifuge: a finite angle between the buoyancy force and the axis of rotation 

      Sheremet, Vitalii A. (Cambridge University Press, 2004-04-28)
      The effect of both vertical and horizontal components of the Earth's rotation on plumes during deep convection in the ocean is studied. In the laboratory, the misalignment, characterized by the angle $\alpha$, between the ...
    • A laboratory model of a cooled continental shelf 

      Whitehead, John A.; Frazel, Robert E. (Woods Hole Oceanographic Institution, 1993-06)
      A laboratory model of wintertme cooling over a continental shelf has a water surface cooled by air in an annular rotating tank. A flat shallow outer "continental shelf" region is next to a conical "contiental slope" bottom ...
    • A laboratory model of vertical ocean circulation driven by mixing 

      Whitehead, John A.; Wang, Wei (American Meteorological Society, 2008-05)
      A model of deep ocean circulation driven by turbulent mixing is produced in a long, rectangular laboratory tank. The salinity difference is substituted for the thermal difference between tropical and polar regions. Freshwater ...
    • Laboratory observations of enhanced entrainment in dense overflows in the presence of submarine canyons and ridges 

      Wåhlin, A. K.; Darelius, Elin; Cenedese, Claudia; Lane-Serff, G. F. (2008-01-29)
      The continental slopes in the oceans are often covered by small-scale topographic features such as submarine canyons and ridges. When dense plumes, flowing geostrophically along the slope, encounter such features they ...
    • Laboratory studies of stratified convection with multiple states 

      Whitehead, John A.; Bradley, Keith (2005-01-14)
      A simplified box model of the cooling of a salt-stratified ocean has been constructed in the laboratory to test a theory that predicts multiple equilibria if certain conditions exist. An isothermal basin of water had a ...
    • A laboratory study of localized boundary mixing in a rotating stratified fluid 

      Wells, Judith R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-02)
      Oceanic observations indicate that abyssal mixing is localized in regions of rough topography. How locally mixed fluid interacts with the ambient fluid is an open question. Laboratory experiments explore the interaction ...
    • Laboratory study of localized boundary mixing in a rotating stratified fluid 

      Wells, Judith R.; Helfrich, Karl R. (Cambridge University Press, 2004-09-24)
      Oceanic observations indicate that abyssal mixing tends to be localized to regions of rough topography. How localized mixing interacts with the ambient fluid in a stratified, rotating system is an open question. To gain ...
    • Lagrangian circulation of Antarctic Intermediate Water in the subtropical South Atlantic 

      Nunez-Riboni, Ismael; Boebel, Olaf; Ollitrault, Michel; You, Yuzhu; Richardson, Philip L.; Davis, Russ E. (2004-12-09)
      This study combines float data from different projects collected between 1991 and 2003 in the South Atlantic to describe the flow of Antarctic Intermediate Water (AAIW). Velocity spacetime averages are calculated for ...
    • Large amplitude internal waves in the coastal ocean (Preface) 

      Grimshaw, Roger H. J.; Helfrich, Karl R.; Scotti, Alberto (Copernicus Publications on behalf of the European Geosciences Union and the American Geophysical Union, 2011-10-07)
      The flow in the coastal ocean, and especially on the continental shelf and slope is often characterized by the presence of very large-amplitude internal waves. These are waves which occur in the interior of the ocean, ...
    • Large scale oceanic circulation and fluxes of freshwater, heat, nutrients and oxygen 

      Ganachaud, Alexandre S. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-12)
      A new, global inversion is used to estimate the large scale oceanic circulation based on the World Ocean Circulation Experiment and Java Australia Dynamic Experiment hydrographic data. A linear inverse "box" model is ...
    • A large-amplitude meander of the shelfbreak front during summer south of New England : observations from the Shelfbreak PRIMER experiment 

      Gawarkiewicz, Glen G.; Brink, Kenneth H.; Bahr, Frank B.; Beardsley, Robert C.; Caruso, Michael J.; Lynch, James F.; Chiu, Ching-Sang (American Geophysical Union, 2004-03-04)
      In order to examine spatial and temporal variability of the shelfbreak front during peak stratification, repeated surveys using a towed undulating vehicle (SeaSoar) are used to describe the evolution of shelfbreak frontal ...
    • Large-scale alignment of oceanic nitrate and density 

      Omand, Melissa M.; Mahadevan, Amala (John Wiley & Sons, 2013-10-15)
      By analyzing global data, we find that over large scales, surfaces of constant nitrate are often better aligned with isopycnals than with isobars, particularly below the euphotic zone. This is unexplained by the movement ...
    • Large-scale, realistic laboratory modeling of M2 internal tide generation at the Luzon Strait 

      Mercier, Matthieu J.; Gostiaux, Louis; Helfrich, Karl R.; Sommeria, Joel; Viboud, Samuel; Didelle, Henri; Ghaemsaidi, Sasan J.; Dauxois, Thierry; Peacock, Thomas (John Wiley & Sons, 2013-11-04)
      The complex double-ridge system in the Luzon Strait in the South China Sea (SCS) is one of the strongest sources of internal tides in the oceans, associated with which are some of the largest amplitude internal solitary ...
    • Laser vision : lidar as a transformative tool to advance critical zone science 

      Harpold, A. A.; Marshall, J. A.; Lyon, S. W.; Barnhart, T. B.; Fisher, B. A.; Donovan, M.; Brubaker, K. M.; Crosby, C. J.; Glenn, N. F.; Glennie, C. L.; Kirchner, P. B.; Lam, N.; Mankoff, Kenneth D.; McCreight, J. L.; Molotch, N. P.; Musselman, K. N.; Pelletier, J.; Russo, T.; Sangireddy, H.; Sjooberg, Y.; Swetnam, T.; West, N. (Copernicus Publications on behalf of the European Geosciences Union, 2015-06-22)
      Observation and quantification of the Earth's surface is undergoing a revolutionary change due to the increased spatial resolution and extent afforded by light detection and ranging (lidar) technology. As a consequence, ...
    • Lateral coupling in baroclinically unstable flows 

      Spall, Michael A.; Pedlosky, Joseph (American Meteorological Society, 2008-06)
      A two-layer quasigeostrophic model in a channel is used to study the influence of lateral displacements of regions of different sign mean potential vorticity gradient (Πy) on the growth rate and structure of linearly ...
    • Lateral organic carbon supply to the deep Canada Basin 

      Hwang, Jeomshik; Eglinton, Timothy I.; Krishfield, Richard A.; Manganini, Steven J.; Honjo, Susumu (American Geophysical Union, 2008-06-12)
      Understanding the processes driving the carbon cycle in the Arctic Ocean is important for assessing the impacts of the predicted rapid and amplified climate change in this region. We analyzed settling particle samples ...