Now showing items 283-302 of 1499

    • Deep-water flow over the Lomonosov Ridge in the Arctic Ocean 

      Timmermans, Mary-Louise; Winsor, Peter; Whitehead, John A. (American Meteorological Society, 2005-08)
      The Arctic Ocean likely impacts global climate through its effect on the rate of deep-water formation and the subsequent influence on global thermohaline circulation. Here, the renewal of the deep waters in the isolated ...
    • Deepwater overflow through Luzon Strait 

      Qu, Tangdong; Girton, James B.; Whitehead, John A. (American Geophysical Union, 2006-01-10)
      This study examines water property distributions in the deep South China Sea and adjoining Pacific Ocean using all available hydrographic data. Our analysis reveals that below about 1500 m there is a persistent baroclinic ...
    • Defining the spicity 

      Huang, Rui Xin (Sears Foundation for Marine Research, 2011-07-01)
      Spicity is defined as a thermodynamic variable whose isopleths are 'perpendicular“ to those of density in the (T, S) diagram. A new set of Matlab codes are defined based on the following criteria: First, the isopleths of ...
    • Delayed baroclinic response of the Antarctic circumpolar current to surface wind stress 

      Yang, Xiao-Yi; Huang, Rui Xin; Wang, Jia; Wang, Dong Xiao (2008-01-11)
      Antarctic Circumpolar Current (ACC) responds to the surface windstress via two processes, i.e., instant barotropic process and delayed baroclinic process. This study focuses on the baroclinic instability mechanism in ACC. ...
    • Dense water formation around islands 

      Spall, Michael A. (John Wiley & Sons, 2013-05-17)
      Basic constraints on the dense water formation rate and circulation resulting from cooling around an island are discussed. The domain under consideration consists of an island surrounded by a shelf, a continental slope, ...
    • Description and evaluation of the Acoustic Profiling of Ocean Currents (APOC) System used on R.V. Oceanus cruise 96 on May 11-22, 1981 

      Joyce, Terrence M.; Rintoul, Stephen R.; Barbour, R. Lorraine (Woods Hole Oceanographic Institution, 1982-11)
      The underway current profiling system used in this study consists of a microprocessor-controlled data logger that collects and formats data from a four-beam Ametek-Straza 300 kHz acoustic Doppler current profiler, heading ...
    • Design and operation of automated ice-tethered profilers for real-time seawater observations in the polar oceans 

      Krishfield, Richard A.; Doherty, Kenneth W.; Frye, Daniel E.; Hammar, Terence R.; Kemp, John N.; Peters, Donald B.; Proshutinsky, Andrey; Toole, John M.; von der Heydt, Keith (Woods Hole Oceanographic Institution, 2006-06)
      An automated, easily-deployed Ice-Tethered Profiler (ITP) has been developed for deployment on perennial sea ice in polar oceans to measure changes in upper ocean temperature and salinity in all seasons. The ITP system ...
    • Design and validation of a modified Eppley PSP pyranometer 

      Payne, Richard E. (Woods Hole Oceanographic Institution, 1994-11)
      A modified version of the Eppley PSP pyranometer has been designed for use on ships and moored buoys. Seventeen have been built by the Eppley Laboratory for the Upper Ocean Processes Group and deployed on buoys in the ...
    • Design study for a moored surface-scanning sonar 

      Freitag, Lee E.; Plueddemann, Albert J.; Merriam, Steve (Woods Hole Oceanographic Institution, 1993-06)
      This report contains the results of a design study for a surface scanning sonar instrument capable of long-term deployment on ocean moorings. The instrument is intended to sample the bubble field just below the ocean's ...
    • Detection of change in the Arctic using satellite and in situ data 

      Comiso, Josefino C.; Yang, Jiayan; Honjo, Susumu; Krishfield, Richard A. (American Geophysical Union, 2003-12-24)
      The decade of the 1990s was the warmest decade of the last century, while the year 1998 was the warmest year ever observed by modern techniques, with 9 out of 12 months of the year being the warmest months. Satellite ice ...
    • Deterioration of perennial sea ice in the Beaufort Gyre from 2003 to 2012 and its impact on the oceanic freshwater cycle 

      Krishfield, Richard A.; Proshutinsky, Andrey; Tateyama, K.; Williams, William J.; Carmack, Eddy C.; McLaughlin, Fiona A.; Timmermans, Mary-Louise (John Wiley & Sons, 2014-02-22)
      Time series of ice draft from 2003 to 2012 from moored sonar data are used to investigate variability and describe the reduction of the perennial sea ice cover in the Beaufort Gyre (BG), culminating in the extreme minimum ...
    • The development of nonlinear surface and internal wave groups 

      Chereskin, Teresa K. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1982-08)
      The development of nonlinear surface and internal wave groups is investigated. Surface wave evolution was observed in an unusually long wave channel as a function of steepness and group length. Dissipation and frequency ...
    • Diagnosing the warming of the Northeastern U.S. Coastal Ocean in 2012 : a linkage between the atmospheric jet stream variability and ocean response 

      Chen, Ke; Gawarkiewicz, Glen G.; Lentz, Steven J.; Bane, John M. (John Wiley & Sons, 2014-01-13)
      The temperature in the coastal ocean off the northeastern U.S. during the first half of 2012 was anomalously warm, and this resulted in major impacts on the marine ecosystem and commercial fisheries. Understanding the ...
    • Diagnosis of physical and biological controls on phytoplankton distribution in the Gulf of Maine-Georges Bank region 

      Wang, Caixia (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-06)
      The linkage between physics and biology is studied by applying a one-dimensional model and a two-dimensional model to the Sargasso Sea and the Gulf of Maine- Georges Bank region, respectively. The first model investigates ...
    • Diapycnal advection by double diffusion and turbulence in the ocean 

      St. Laurent, Louis C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-09)
      Observations of diapycnal mixing rates are examined and related to diapycnal advection for both double-diffusive and turbulent regimes. The role of double-diffusive mixing at the site of the North Atlantic Tracer ...
    • Diapycnal mixing in the Antarctic Circumpolar Current 

      Ledwell, James R.; St. Laurent, Louis C.; Girton, James B.; Toole, John M. (American Meteorological Society, 2011-01)
      The vertical dispersion of a tracer released on a density surface near 1500-m depth in the Antarctic Circumpolar Current west of Drake Passage indicates that the diapycnal diffusivity, averaged over 1 yr and over tens of ...
    • Differences between 1999 and 2010 across the Falkland Plateau : fronts and water masses 

      Perez-Hernandez, M. Dolores; Hernández-Guerra, Alonso; Comas-Rodríguez, Isis; Benítez-Barrios, Verónica M.; Fraile-Nuez, Eugenio; Pelegrí, Josep; Naveira Garabato, Alberto C. (Copernicus Publications on behalf of the European Geosciences Union, 2017-07-07)
      Decadal differences in the Falkland Plateau are studied from the two full-depth hydrographic data collected during the ALBATROSS (April 1999) and MOC-Austral (February 2010) cruises. Differences in the upper 100 dbar are ...
    • Diffusive vertical heat flux in the Canada Basin of the Arctic Ocean inferred from moored instruments 

      Lique, Camille; Guthrie, John D.; Steele, Michael; Proshutinsky, Andrey; Morison, James H.; Krishfield, Richard A. (John Wiley & Sons, 2014-01-22)
      Observational studies have shown that an unprecedented warm anomaly has recently affected the temperature of the Atlantic Water (AW) layer lying at intermediate depth in the Arctic Ocean. Using observations from four ...
    • A dike–groyne algorithm in a terrain-following coordinate ocean model (FVCOM) : development, validation and application 

      Ge, Jianzhong; Chen, Changsheng; Qi, Jianhua; Ding, Pingxing; Beardsley, Robert C. (2012-01)
      A dike-groyne module is developed and implemented into the unstructured-grid, three dimensional primitive equation Finite-Volume Coastal Ocean Model (FVCOM) for the study of the hydrodynamics around human-made construction ...
    • Dimensions of continents and oceans – water has carved a perfect cistern 

      Whitehead, John A. (2017-03-26)
      The ocean basins have almost exactly the correct surface area and average depth to hold Earth’s water. This study asserts that three processes are responsible for this. First, the crust is thickened by lateral compression ...