Now showing items 1-20 of 39

    • Acoustic sampling volume 

      Foote, Kenneth G. (Acoustical Society of America, 1991-08)
      Knowledge of the acoustic sampling volume is necessary in many quantitative applications of acoustics. In general, the sampling volume is not merely a characteristic of the transmitting and receiving transducers, but also ...
    • Acoustic scattering from density and sound speed gradients : modeling of oceanic pycnoclines 

      Ross, Tetjana; Lavery, Andone C. (Acoustical Society of America, 2011-12-20)
      A weak-scattering model that allows prediction of acoustic scattering from oceanic pycnoclines (and the accompanying sound speed gradients) based on hydrographic profiles is described. Model predictions, based on profiles ...
    • Acoustic scattering from double-diffusive microstructure 

      Lavery, Andone C.; Ross, Tetjana (Acoustical Society of America, 2007-09)
      Laboratory measurements of high-frequency broadband acoustic backscattering (200–600 kHz) from the diffusive regime of double-diffusive microstructure have been performed. This type of microstructure, which was characterized ...
    • Aerial imaging of fluorescent dye in the near shore 

      Clark, David B.; Lenain, Luc; Feddersen, Falk; Boss, Emmanuel S.; Guza, R. T. (American Meteorological Society, 2014-06)
      Aerial images are used to quantify the concentration of fluorescent Rhodamine water tracing (WT) dye in turbid and optically deep water. Tracer releases near the shoreline of an ocean beach and near a tidal inlet were ...
    • The Amazon frontier of land-use change : croplands and consequences for greenhouse gas emissions 

      Galford, Gillian L.; Melillo, Jerry M.; Mustard, John F.; Cerri, Carlos E. P.; Cerri, Carlos C. (American Meteorological Society, 2010-10-28)
      The Brazilian Amazon is one of the most rapidly developing agricultural frontiers in the world. The authors assess changes in cropland area and the intensification of cropping in the Brazilian agricultural frontier state ...
    • Analysis of seismo-acoustic emission from ice fracturing events during SIMI’94 

      Dudko, Yuriy V. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-02)
      In this thesis the analysis of natural ice events is carried out based on direct measurements of ice-borne seismo-acoustic waves generated by ice fracturing processes. A major reason for studying this phenomenon is that ...
    • Antarctic surface melting dynamics : enhanced perspectives from radar scatterometer data 

      Trusel, Luke D.; Frey, Karen E.; Das, Sarah B. (American Geophysical Union, 2012-05-17)
      Antarctic ice sheet surface melting can regionally influence ice shelf stability, mass balance, and glacier dynamics, in addition to modulating near-surface physical and chemical properties over wide areas. Here, we ...
    • Assessing the uncertainties of model estimates of primary productivity in the tropical Pacific Ocean 

      Friedrichs, Marjorie A. M.; Carr, Mary-Elena; Barber, Richard T.; Scardi, Michele; Antoine, David; Armstrong, Robert A.; Asanuma, Ichio; Behrenfeld, Michael J.; Buitenhuis, Erik T.; Chai, Fei; Christian, James R.; Ciotti, Aurea M.; Doney, Scott C.; Dowell, Mark; Dunne, John P.; Gentili, Bernard; Gregg, Watson; Hoepffner, Nicolas; Ishizaka, Joji; Kameda, Takahiko; Lima, Ivan D.; Marra, John F.; Melin, Frederic; Moore, J. Keith; Morel, Andre; O'Malley, Robert T.; O'Reilly, Jay; Saba, Vincent S.; Schmeltz, Marjorie; Smyth, Tim J.; Tjiputra, Jerry; Waters, Kirk; Westberry, Toby K.; Winguth, Arne (2008-03)
      Depth-integrated primary productivity (PP) estimates obtained from satellite ocean color based models (SatPPMs) and those generated from biogeochemical ocean general circulation models (BOGCMs) represent a key resource ...
    • Atmosphere and marginal-sea interaction leading to an interannual variation in cold-air outbreak activity over the Japan Sea 

      Isobe, Atsuhiko; Beardsley, Robert C. (American Meteorological Society, 2007-12-01)
      The interannual variation in cold-air outbreak activity over the Japan Sea is investigated using Japan Meteorological Agency buoy 21002 and Quick Scatterometer (QuikSCAT) wind data, Japan Oceanographic Data Center sea ...
    • Atmospheric carbon dioxide variability in the Community Earth System Model : evaluation and transient dynamics during the twentieth and twenty-first centuries 

      Keppel-Aleks, Gretchen; Randerson, James T.; Lindsay, Keith; Stephens, Britton B.; Moore, J. Keith; Doney, Scott C.; Thornton, Peter E.; Mahowald, Natalie M.; Hoffman, Forrest M.; Sweeney, Colm; Tans, Pieter P.; Wennberg, Paul O.; Wofsy, Steven C. (American Meteorological Society, 2013-07-01)
      Changes in atmospheric CO2 variability during the twenty-first century may provide insight about ecosystem responses to climate change and have implications for the design of carbon monitoring programs. This paper describes ...
    • A code-division, multiple beam sonar imaging system 

      Richardson, John M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1989-08)
      In this thesis, a new active sonar imaging concept is explored using the principle of code-division and the simultaneous transmission of multiple coded signals. The signals are sixteen symbol, four-bit, non-linear, block ...
    • A compilation of digitized satellite imagery of the Gulf Stream (1982, 1983, and 1985) 

      Earles, Jennifer; Pratt, Lawrence J.; Cornillon, Peter; Cayula, Jean-Francois (Woods Hole Oceanographic Institution, 1988-11)
      Ninety plots of digitized temperature boundaries from infared satellite images of the Gulf Stream along with corresponding image snapshots were compiled to determine stream width propagation speed. The satellite images ...
    • Effect of continental shelf canyons on phytoplankton biomass and community composition along the western Antarctic Peninsula 

      Kavanaugh, Maria T.; Abdala, F. N.; Ducklow, Hugh W.; Glover, David M.; Fraser, William R.; Martinson, Douglas G.; Stammerjohn, Sharon E.; Schofield, Oscar M. E.; Doney, Scott C. (Inter-Research, 2015-03-30)
      The western Antarctic Peninsula is experiencing dramatic climate change as warm, wet conditions expand poleward and interact with local physics and topography, causing differential regional effects on the marine ecosystem. ...
    • Estimates of North Atlantic ventilation and mode water formation for winters 2002–06 

      Trossman, David S.; Thompson, LuAnne; Kelly, Kathryn A.; Kwon, Young-Oh (American Meteorological Society, 2009-10)
      Lagrangian estimates for ventilation rates in the Gulf Stream Extension using Argo and World Ocean Circulation Experiment/Atlantic Climate and Circulation Experiment (WOCE/ACCE) float data, scatterometer (QuikSCAT) wind ...
    • Estimating infrared radiometric satellite sea surface temperature retrieval cold biases in the tropics due to unscreened optically thin cirrus clouds 

      Marquis, Jared W.; Bogdanoff, Alec S.; Campbell, James R.; Cummings, James A.; Westphal, Douglas L.; Smith, Nathaniel J.; Zhang, Jianglong (American Meteorological Society, 2017-02-06)
      Passive longwave infrared radiometric satellite–based retrievals of sea surface temperature (SST) at instrument nadir are investigated for cold bias caused by unscreened optically thin cirrus (OTC) clouds [cloud optical ...
    • Evaluating remotely sensed phenological metrics in a dynamic ecosystem model 

      Xu, Hong; Twine, Tracy E.; Yang, Xi (MDPI AG, 2014-05-26)
      Vegetation phenology plays an important role in regulating processes of terrestrial ecosystems. Dynamic ecosystem models (DEMs) require representation of phenology to simulate the exchange of matter and energy between the ...
    • Global assessment of ocean carbon export by combining satellite observations and food-web models 

      Siegel, David A.; Buesseler, Ken O.; Doney, Scott C.; Sailley, Sevrine F.; Behrenfeld, Michael J.; Boyd, Philip W. (John Wiley & Sons, 2014-03-10)
      The export of organic carbon from the surface ocean by sinking particles is an important, yet highly uncertain, component of the global carbon cycle. Here we introduce a mechanistic assessment of the global ocean carbon ...
    • Google haul out : Earth observation imagery and digital aerial surveys in coastal wildlife management and abundance estimation 

      Moxley, Jerry; Bogomolni, Andrea L.; Hammill, Mike O.; Moore, Kathleen M. T.; Polito, Michael J.; Sette, Lisa; Sharp, W. Brian; Waring, Gordon T.; Gilbert, James R.; Halpin, Patrick N.; Johnston, David W. (Oxford University Press, 2017-06-14)
      As the sampling frequency and resolution of Earth observation imagery increase, there are growing opportunities for novel applications in population monitoring. New methods are required to apply established analytical ...
    • High-frequency acoustic scattering from turbulent oceanic microstructure : the importance of density fluctuations 

      Lavery, Andone C.; Schmitt, Raymond W.; Stanton, Timothy K. (Acoustical Society of America, 2003-11)
      Acoustic scattering techniques provide a unique and powerful tool to remotely investigate the physical properties of the ocean interior over large spatial and temporal scales. With high-frequency acoustic scattering it is ...
    • Improved detection of the first-order region for direction-finding HF radars using image processing techniques 

      Kirincich, Anthony R. (American Meteorological Society, 2017-08-11)
      For direction-finding high-frequency (HF) radar systems, the correct separation of backscattered spectral energy due to Bragg resonant waves from that due to more complex double-scattering represents a critical first step ...