Recent Submissions

  • Long-term broadband acoustic observations of zooplankton scattering layers in Saanich Inlet, British Columbia 

    Ross, T.. "Long-term broadband acoustic observations of zooplankton scattering layers in Saanich Inlet, British Columbia." Canadian Meteorological and Oceanographic Society, McDonald Building 150 Louis Pasteur, Ste 112 Ottawa, ON, K1N 6N5 Canada. [np]. CMOS Congress 2009 - Sea and Sky Come to Life, Halifax, Nova Scotia (Canada), 31 May - 4 June 2009.
    The application of broadband techniques to fish and zooplankton bioacoustics is showing potential to transform the field into one that is much more quantitative. This is because broadband techniques allow the use of the ...
  • ASSESSING THE ISOTROPY OF TURBULENCE USING BROADBAND ACOUSTICS 

    Leong, D. N., T. Ross, A. Lavery, and J. N. Moum. 2008. "ASSESSING THE ISOTROPY OF TURBULENCE USING BROADBAND ACOUSTICS." 2008 Ocean Sciences Meeting: From the Watershed to the Global Ocean, Orlando, FL (USA), 2-7 Mar 2008.
    Acoustic backscatter returns from turbulent oceanic microstructure have the potential to remotely describe temperature and salinity variations and identify turbulent dissipation rates. Oceanic turbulence models that relate ...
  • Acoustic detection of thermohaline staircases in the ocean and laboratory 

    Schmitt, R. W., P. Nandi, T. Ross, A. Lavery, et al. 2005. "Acoustic detection of thermohaline staircases in the ocean and laboratory." MTS/IEEE OCEANS, 2005, September 18, 2005 - September 23 2005.
    Low frequency seismic reflection profiling has recently been used to reveal the interior thermohaline finestructure of the ocean, including intrusions, water mass boundaries and internal waves. 1,2,3]. Limited in-situ ...
  • Anisotropy in high-frequency broadband acoustic backscattering in the presence of turbulent microstructure and zooplankton 

    Leong, Doris, Tetjana Ross, and Andone Lavery. 2012. "Anisotropy in high-frequency broadband acoustic backscattering in the presence of turbulent microstructure and zooplankton." Journal of the Acoustical Society of America 132(2): 670-679. doi:10.1121/1.4730904 © 2012 Acoustical Society of America
    High-frequency broadband (120-600 kHz) acoustic backscattering measurements have been made in the vicinity of energetic internal waves. The transducers on the backscattering system could be adjusted so as to insonify the ...
  • Acoustic scattering from density and sound speed gradients: Modeling of oceanic pycnoclines 

    Ross, T., and A. C. Lavery. 2012. "Acoustic scattering from density and sound speed gradients: Modeling of oceanic pycnoclines." Journal of the Acoustical Society of America 131(1): 54-EL60. doi:10.1121/1.3669394 1© 2012 Acoustical Society of America
    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 Detection of Oceanic Double-Diffusive Convection: A Feasibility Study 

    Ross, Tetjana, and Andone Lavery. 2010. "Acoustic Detection of Oceanic Double-Diffusive Convection: A Feasibility Study." Journal of Atmospheric and Oceanic Technology 27(3): 580-593.
    The feasibility of using high-frequency acoustic scattering techniques to map the extent and evolution of the diffusive regime of double-diffusive convection in the ocean is explored. A scattering model developed to describe ...
  • Laboratory observations of double-diffusive convection using high-frequency broadband acoustics 

    Ross, Tetjana, and Andone Lavery. 2009. "Laboratory observations of double-diffusive convection using high-frequency broadband acoustics." Experiments in Fluids 46(2): 355-364.
    High-frequency broadband (200-300 kHz) acoustic scattering techniques have been used to observe the diffusive regime of double-diffusive convection in the laboratory. Pulse compression signal processing techniques allow ...
  • Swimming patterns of larval Strongylocentrotus droebachiensis in turbulence in the laboratory 

    Roy, Amy, Anna Metaxas, and Tetjana Ross. 2012. "Swimming patterns of larval Strongylocentrotus droebachiensis in turbulence in the laboratory." Marine Ecology Progress Series 453: 117-127.
    We exposed 4-arm plutei of the sea urchin Strongylocentrotus droebachiensis to 2 levels of turbulent dissipation rates (epsilon: 9 x 10(-9) or 4 x 10(-7) W kg(-1)) in the laboratory, generated by using an oscillating metal ...
  • The effect of flow on larval vertical distribution of the sea urchin, Strongylocentrotus droebachiensis 

    Sameoto, Jessica A., Tetjana Ross, and Anna Metaxas. 2010. "The effect of flow on larval vertical distribution of the sea urchin, Strongylocentrotus droebachiensis." Journal of experimental marine biology and ecology 383(2): 156-163.
    Most meroplanktonic larvae have been considered to behave as passive particles in the water column, and their dispersal determined by advection. However, larvae may influence their horizontal transport by sinking or swimming ...
  • Ocean acoustic backscattering: When you can ignore acoustic scatter from turbulence and when you can't 

    Ross, T., A. Lavery, R. Lueck, P. Wiebe, et al. 2004. "Ocean acoustic backscattering: When you can ignore acoustic scatter from turbulence and when you can't." Journal of the Acoustical Society of America 115(5): 2583.
    While models predicting measurable levels of acoustic backscattering from oceanic turbulence have been around for decades, they have proven notoriously hard to confirm. This is, in part, because potential turbulent scattering ...
  • Western Mediterranean sea-level rise: changing exchange flow through the Strait of Gibraltar 

    Ross, T., C. Garrett, and PY Le Traon. 2000. "Western Mediterranean sea-level rise: changing exchange flow through the Strait of Gibraltar." Geophysical Research Letters 27(18): 2949-2952.
    Sea-level data from tide gauges and satellite altimetry show a decrease of nearly 40% in the sea-level drop between the Atlantic and the Mediterranean from 1994 to 1997, coming mainly from a rapid rise of western Mediterranean ...
  • On the turbulent co-spectrum of two scalars and its effect on acoustic scattering from oceanic turbulence 

    Ross, T., C. Garrett, and R. Lueck. 2004. "On the turbulent co-spectrum of two scalars and its effect on acoustic scattering from oceanic turbulence." Journal of Fluid Mechanics 514: 107-119.
    While acoustic scatter from oceanic turbulence is sensitive to temperature-salinity covariations, there are unfortunately no published measurements of the turbulent temperature-salinity co-spectrum. Several models have ...
  • Acoustic Scattering from Double-Diffusive Staircases: News from the Lab 

    Ross, T., A. Lavery, and R. Schmitt. Acoustic Scattering from Double-Diffusive Staircases: News from the Lab. American Geophysical Union, 2000 Florida Ave., N.W. Washington DC 20009 USA, [URL:http://www.agu.org/pubs/agu_joureos.html], 2006.
    Since Holbrook et al. (2003) showed that thermohaline fine structure is visible in seismic data, there has been great interest in the possibility of `mining' seismic data to develop a climatology of fine structure. Much ...
  • Simultaneous acoustic observations of turbulence and zooplankton 

    Ross, T., I. Gaboury, and R. Lueck. 2008. "Simultaneous acoustic observations of turbulence and zooplankton." Journal of the Acoustical Society of America 123(5). doi:10.1121/1.2933390 © 2008 Acoustical Society of America
    Models and laboratory experiments show that zooplankton may locate food more easily in turbulent waters, but whether plankton seek or avoid turbulence in the ocean is an open question. It is difficult to measure turbulence ...
  • Acoustic scattering from double-diffusive microstructure 

    Lavery, Andone C., and Tetjana Ross. 2007. "Acoustic scattering from double-diffusive microstructure." Journal of the Acoustical Society of America 122(3): 1449-1462. doi:10.1121/1.2764475 © 2007 Acoustical Society of America
    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 ...
  • Problems and solutions in the application of predictive microbiology 

    Ross, T., and J. Olley. Problems and solutions in the application of predictive microbiology. TECHNOMIC PUBLISHING COMPANY, INC., LANCASTER, PA (USA), 1997.
    Predictive microbiology represents a rational, quantitative, and generic approach to improving food quality and safety and to developing an understanding of the 'dynamic' microbial ecology of foods. Although models describing ...
  • Sound scattering from oceanic turbulence 

    Ross, T., and R. Lueck. 2003. "Sound scattering from oceanic turbulence." Geophysical Research Letters 30(6): 1343-1343.
    [1] The first near coincident measurements of acoustic backscatter and temperature/velocity microstructure confirm theoretical predictions that oceanic turbulence scatters sound. Not only are acoustic backscatter at 307 ...
  • Simultaneous acoustic observations of turbulence and zooplankton in the ocean 

    Ross, Tetjana, Isabelle Gaboury, and Rolf Lueck. 2007. "Simultaneous acoustic observations of turbulence and zooplankton in the ocean." Deep-Sea Research Part I-Oceanographic Research Papers 54(1): 143-153.
  • THE MYSTERIOUS BEHAVIOR OF GREEN SEA URCHIN LARVAE 

    Ross, T., A. Metaxas, J. Sameoto, and A. Logan. THE MYSTERIOUS BEHAVIOR OF GREEN SEA URCHIN LARVAE. American Geophysical Union, 2000 Florida Ave., N.W. Washington DC 20009 USA, [URL:http://www.agu.org], 2008.
    Above some threshold, turbulence has been shown to increase sinking behavior, and therefore settlement, of some larvae and stimulate swimming behavior in others. These results suggest that flow-cued behavior modification ...

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