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  • Acoustic backscatter inversion for suspended sediment concentration and size: A new approach using statistical inverse theory 

    Wilson, Gregory W; Hay, Alexander E (Elsevier, 2015)
    A new method is introduced for estimating suspended sediment concentration and grain size from acoustic backscatter observations, incorporating techniques from linearized statistical inverse theory and data assimilation. ...
  • Eastern Pacific cooling and Atlantic overturning circulation during the last deglaciation 

    Kienast, Markus; Kienast, Stephanie S.; Calvert, Stephen E.; Eglinton, Timothy I.; Mollenhauer, Gesine; Francois, Roger; Mix, Alan C. (2006-10)
    Surface ocean conditions in the equatorial Pacific Ocean could hold the clue to whether millennial-scale global climate change during glacial times was initiated through tropical ocean - atmosphere feedbacks or by changes ...
  • Near collapse of the meridional SST gradient in the eastern equatorial Pacific during Heinrich Stadial 1 

    Kienast, Stephanie S.; Friedrich, Tobias; Dubois, Nathalie; Hill, Paul S.; Timmermann, Axel; Mix, Alan C.; Kienast, Markus (American Geophysical Union, 2000 Florida Ave., N.W. Washington DC 20009 United States, 2013-12)
    Sea surface temperatures (SST) and inorganic continental input over the last 25,000years (25ka) are reconstructed in the far eastern equatorial Pacific (EEP) based on three cores stretching from the equatorial front (~0.01 ...
  • Comment on "Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?'' by M. Lyle et al. 

    Francois, Roger; Frank, Martin; van der Loeff, Michiel Rutgers; Bacon, Michael P.; Geibert, Walter; Kienast, Stephanie; Anderson, Robert F.; Bradtmiller, Louisa; Chase, Zanna; Henderson, Gideon; Marcantonio, Franco; Allen, Susan E. (2007-03)
    No abstract available.
  • Comment on 'Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?' by M. Lyle et al 

    Francois, Roger; Frank, Martin; Van der Loeff, Michiel Rutgers; Bacon, Michael P.; Geibert, Walter; Kienast, Stephanie; Anderson, Robert F.; Bradtmiller, Louisa; Chase, Zanna; Henderson, Gideon; Marcantonio, Franco; Allen, Susan E. (American Geophysical Union, 2000 Florida Ave., N.W. Washington DC 20009 USA, [mailto:service@agu.org], [URL:http://www.agu.org], 2007-03)
    No abstract available.
  • Millennial-scale variations in hydrography and biogeochemistry in the Eastern Equatorial Pacific over the last 100 kyr 

    Dubois, Nathalie; Kienast, Markus; Kienast, Stephanie; Normandeau, Claire; Calvert, Stephen E.; Herbert, Timothy D.; Mix, Alan (Elsevier Science, The Boulevard Kidlington Oxford OX5 1GB UK, 2011-01)
    In this study, we use records of nitrogen isotope ratios ([delta][super]15N), UK'37 temperature estimates, organic carbon and opal percentages from high-resolution sediment cores located in the eastern equatorial Pacific ...
  • The acceleration of oceanic denitrification during deglacial warming 

    Galbraith, Eric D.; Kienast, Markus; Albuquerque, Ana Luiza; Altabet, Mark A.; Batista, Fabian; Bianchi, Daniele; Calvert, Stephen E.; Contreras, Sergio; Crosta, Xavier; De Pol-Holz, Ricardo; Dubois, Nathalie; Etourneau, Johan; Francois, Roger; Hsu, Ting-Chang; Ivanochko, Tara; Jaccard, Samuel L.; Kao, Shuh-Ji; Kiefer, Thorsten; Kienast, Stephanie; Lehmann, Moritz F.; Martinez, Philippe; McCarthy, Matthew; Meckler, Anna Nele; Mix, Alan; Moebius, Juergen; Pedersen, Tom F.; Pichevin, Laetitia; Quan, Tracy M.; Robinson, Rebecca S.; Ryabenko, Evgeniya; Schmittner, Andreas; Schneider, Ralph; Schneider-Mor, Aya; Shigemitsu, Masahito; Sinclair, Dan; Somes, Christopher; Studer, Anja S.; Tesdal, Jan-Erik; Thunell, Robert; Yang, Jin-Yu Terence; NICOPP Working Grp Members (2013-07)
    Over much of the ocean's surface, productivity and growth are limited by a scarcity of bioavailable nitrogen. Sedimentary delta N-15 records spanning the last deglaciation suggest marked shifts in the nitrogen cycle during ...
  • A review of nitrogen isotopic alteration in marine sediments 

    Robinson, Rebecca S.; Kienast, Markus; Albuquerque, Ana Luiza; Altabet, Mark; Contreras, Sergio; De Pol Holz, Ricardo; Dubois, Nathalie; Francois, Roger; Galbraith, Eric; Hsu, Ting-Chang; Ivanochko, Tara; Jaccard, Samuel; Kao, Shuh-Ji; Kiefer, Thorsten; Kienast, Stephanie; Lehmann, Moritz F.; Martinez, Philippe; McCarthy, Matthew; Moebius, Juergen; Pedersen, Tom; Quan, Tracy M.; Ryabenko, Evgeniya; Schmittner, Andreas; Schneider, Ralph; Schneider-Mor, Aya; Shigemitsu, Masahito; Sinclair, Dan; Somes, Christopher; Studer, Anja; Thunell, Robert; Yang, Jin-Yu (2012-10)
    Nitrogen isotopes are an important tool for evaluating past biogeochemical cycling from the paleoceanographic record. However, bulk sedimentary nitrogen isotope ratios, which can be determined routinely and at minimal cost, ...
  • Sedimentary opal records in the eastern equatorial Pacific: It is not all about leakage 

    Dubois, Nathalie; Kienast, Markus; Kienast, Stephanie; Calvert, Stephen E.; Francois, Roger; Anderson, Robert F. (2010-12)
    The clear predictions of the silicic acid leakage hypothesis (SALH) resulted in a number of studies of downcore opal records from the tropical Pacific. The original SALH predicts that unused silicic acid, due to Fe-driven ...
  • North Atlantic sea-level and circulation 

    Thompson, K. R. (1986-10)
    Monthly sea-levels from an extensive array of North Atlantic tide gauges (26-50N) are examined. The spatial scale of the sea-level variations, and the reasons for them, are discussed. The contribution of local air pressure ...
  • A model of carrying capacity for suspended mussel culture in eastern Canada 

    Grant, J.; Thompson, K. R. (1988)
    Rapid growth of mussel (Mytilus edulis ) aquaculture in the Maritimes has placed increasing demands on resources in coastal waters. The carrying capacity of coastal sites for suspended mussel culture is modeled and criteria ...
  • Coupled atmosphere-ocean observations and modelling for Lunenburg Bay, Nova Scotia 

    Ritchie, Harold; Desjardins, Serge; Sheng, Jinyu; Wang, Liang (American Meteorological Society, 2004-2004)
    A high resolution eddy resolving coastal model, using the free-surface version of CANDIE, is developed for atmospheric-ocean modeling system of Lunenburg Bay (LB). The model is used to study the three-dimensional barotropic ...
  • The Influence of Circulation and Water Temperature on the Distribution and Abundance of Calanus finmarchicus in the Gulf of St. Lawrence-Scotian Shelf System 

    Zakardjian, B. A.; Runge, J. A.; Gratton, Y.; Lu, Y.; McLaren, I. A.; Plourde, S.; Sheng, J.; Thompson, K. (American Geophysical Union, 2000 Florida Ave., N.W. Washington, DC 20009 USA, [URL:http://www.agu.org], 2000)
    As part of GLOBEC-Canada, we have developed a 3-D model that couples the life-cycle of Calanus with the hydrodynamics of the Gulf of St. Lawrence- Scotian Shelf (GSL-SS) system, as described by the Canada-Dietrich (CANDIE) ...
  • Simulating Circulation on the Scotian Shelf using a Sigma-Coordinate Model 

    Ohashi, K.; Sheng, J.; Ritchie, H.; Thompson, K. R.; Hannah, C. G. (Canadian Meteorological and Oceanographic Society, McDonald Building 150 Louis Pasteur, Ste 112 Ottawa, ON, K1N 6N5 Canada, [URL:http://www.cmos.ca], 2006)
    Circulation on the Scotian Shelf in 2001 is simulated using the Princeton Ocean Model. We use a nested-grid setup, adapted from the operational circulation forecast system known as DalCoast. The outer model covers the ...
  • Simulating seasonal variability of circulation and hydrography on the Scotian Shelf 

    Ohashi, Kyoko; Sheng, Jinyu; Thompson, Keith R.; Ritchie, Harold (American Society of Civil Engineers, 2006)
    A three-dimensional shelf circulation model is used to simulate the seasonal variability of circulation and hydrography on the Scotian Shelf over the eastern Canadian seaboard. The model is a modified form of an operational ...
  • The barotropic ocean response to fast moving tropical cyclones affecting Atlantic Canada 

    Mecking, J.; Greatbatch, R.; Fogarty, C.; Sheng, J. (Canadian Meteorological and Oceanographic Society, McDonald Building 150 Louis Pasteur, Ste 112 Ottawa, ON, K1N 6N5 Canada, [URL:http://www.cmos.ca], )
    Atlantic Canadian coastal waters are occasionally affected by tropical cyclones (TC) which can have devastating effects in the form of a storm surge and/or meteorological tsunami. The current operational storm surge model ...
  • A new two-way nested-grid ocean modelling technique applied to the scotian shelf and slope 

    Zhai, Xiaoming; Sheng, Jinyu; Greatbatch, Richard (American Society of Civil Engineers, 2003)
    A nested-grid ocean circulation model is developed for the Scotian Shelf and adjacent slope. The nested model consists of a fine-resolution inner model embedded inside a coarse-resolution outer model. The inner model covers ...
  • Numerical Study on Uptake and Spreading of Chlorofluorocarbons in the Northwest Atlantic Ocean 

    Zhao, J.; Sheng, J.; Greatbatch, R.; Azetsu-Scott, K.; Eden, C. (Canadian Meteorological and Oceanographic Society, McDonald Building 150 Louis Pasteur, Ste 112 Ottawa, ON, K1N 6N5 Canada, [URL:http://www.cmos.ca], )
    Chlorofluorocarbons (CFCs) are anthropogenic compounds released to the atmosphere since 1930s. They enter the surface ocean by gas exchange and are then transported to the deep ocean by circulation, convection and subduction. ...
  • A numerical study of circulation and associated variability in the Intra-Americas Sea 

    Lin, Yuehua; Sheng, Jinyu; Greatbatch, Richard J. (American Society of Civil Engineers, 2009)
    A three-dimensional, data-assimilative, regional ocean circulation model is used in simulating circulation, hydrography and associated variability in the Intra-Americas Sea (IAS). The model domain covers the region between ...
  • Transport variability through the Yucatan Channel: the influence of the Florida Current and flow compensation around Cuba 

    Lin, Y.; Sheng, J.; Greatbatch, R. (Canadian Meteorological and Oceanographic Society, McDonald Building 150 Louis Pasteur, Ste 112 Ottawa, ON, K1N 6N5 Canada, [URL:http://www.cmos.ca], )
    Water enters and leaves the Gulf of Mexico via the Yucatan Channel and the part of the Florida Current that flows between Cuba and Florida. Both observation and model results suggest that the transport through the Yucatan ...

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