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Browsing by Author "Falkner, Kelly"

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Browsing by Author "Falkner, Kelly"

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  • Atlantic water circulation over the Mendeleev Ridge and Chikchi Borderland from thermohaline intrusions and water mass properties 
    Woodgate, Rebecca A,; Aagaard, Knut; Swift, James H.; Smethie, William M.; Falkner, Kelly (American Geophysical Union, 2007-02-03)
    Hydrographic and tracer data from 2002 illustrate Atlantic water pathways and variability in the Mendeleev Ridge and Chukchi Borderland (CBLMR) region of the Arctic Ocean. Thermohaline double diffusive intrusions (zigz ...
  • Calcium carbonate saturation states in the waters of the Canadian Arctic Archipelago and the Labrador Sea 
    Azetsu-Scott, Kumiko; Clarke, Allyn; Falkner, Kelly; Hamilton, James; Jones, E. Peter; Lee, Craig; Petrie, Biran; Prinsenberg, Simon; Starr, Michel; Yeats, Philip (American Geophysical Union, 2010-11-23)
    Ocean acidification is predicted to occur first in polar oceans. We investigated the saturation state of waters with respect to calcite (Wcal) and aragonite (Warg) in six sections along an Arctic outflow pathway throug ...
  • Connections among ice, runoff and atmospheric forcing in the Beaufort Gyre 
    Macdonald, R. W.; Carmack, E. C.; McLaughlin, F. A.; Falkner, Kelly; Swift, J. H. (American Geophysical Union, 1999-08-01)
    During SHEBA, thin ice and freshening of the Arctic Ocean surface in the Beafort Sea led to speculation that perennial sea ice was disappearing [McPhee et al., 1998]. Since 1987, we have collected salinity, δ¹⁸O and Ba p ...
  • Differentiating freshwater contributions and their variability to the surface and halocline layers of the Arctic and subarctic seas 
    Alkire, Matthew Buckley (2010-03-19)
    Dramatic and ongoing changes pervading the Arctic and subarctic seas over recent decades have motivated this effort to track and better understand hydrographic variability using chemical tracers. Particular emphasis ha ...
  • High‐resolution measurements of dissolved organic carbon in the Arctic Ocean by in situ fiber‐optic spectrometry 
    Guay, Christopher K.; Klinkhammer, Gary P.; Falkner, Kelly; Benner, Ronald; Coble, Paula G.; Whiteledge, Terry E.; Black, Brenda; Bussell, F. Joseph; Wagner, Tim A. (American Geophysical Union, 1999-04-15)
    Here we report results from an extensive survey of dissolved organic carbon (DOC) in the Arctic Ocean, which was achieved by means of a high-resolution, in situ UV fluorometer deployed on a nuclear submarine. Based on ...
  • The major and minor element geochemistry of Lake Baikal 
    Falkner, Kelly; Measures, Chris I.; Herbelin, Sarah E.; Edmond, John M.; Weiss, Ray F. (American Society of Limnology and Oceanography, 1991-05)
    A comprehensive, joint Soviet-American study of the chemistry of Lake Baikal, the world’s deepest (1,632 m) lake, was carried out in July 1988. In this paper, we report the major, minor, and preliminary trace element con ...
  • Minor and trace element chemistry of Lake Baikal, its tributaries, and surrounding hot springs 
    Falkner, Kelly; Church, M.; Measures, Chris I.; LeBaron, G.; Thouron, D.; Jeandel, C.; Stordal, M. C.; Gill, G. A.; Mortlock, R.; Froelich, P.; Chan, L.-H. (American Society of Limnology and Oceanography, 1997)
    A Russian–American fieldwork effort on Lake Baikal, its tributaries, and surrounding hot springs was undertaken in June–July 1991. Here we report on aspects of major ion (Ca2+, Mg2+, Na+, K+, Alk, Cl–, SO42–) and several ...
  • Pacific ventilation of the Artic Ocean's lower halocline by upwelling and diapycnal mixing over the continental margin 
    Woodgate, Rebecca A.; Aagaard, Knut; Swift, James H.; Falkner, Kelly; Smethie, William M. (American Geophysical Union, 2005-09-29)
    Pacific winter waters, a major source of nutrients and buoyancy to the Arctic Ocean, are thought to ventilate the Arctic's lower halocline either by injection (isopycnal or penetrative) of cold saline shelf waters, or by ...
  • Quantitative considerations of dissolved barium as a tracer in the Arctic Ocean 
    Taylor, John Ryan; Falkner, Kelly; Schauer, Ursula; Meredith, Mike (American Geophysical Union, 2003-12-05)
    Dissolved barium (Ba) was measured along transects across Fram and Denmark Straits as part of the 1998 ARK-XIV/2 Polarstern expedition. Results are combined with other available tracer observations to analyze water mas ...
  • Relaxation of central Arctic Ocean hydrography to pre-1990s climatology 
    Morison, J.; Steele, M.; Kikuchi, T.; Falkner, Kelly; Smethie, W. (American Geophysical Union, 2006-09-08)
    Upper ocean hydrography in the central Arctic Ocean has relaxed since 2000 to near-climatological conditions that pertained before the dramatic changes of the 1990s. The behavior of the anomalies of temperature and sa ...
  • Siberian-Arctic shelf surface-sediments: sources, transport pathways and processes, and diagenetic alteration 
    Viscosi-Shirley, Carolyn (2000-08-25)
    This thesis investigates lithogenic sediments on the Siberian Arctic shelf, their sources, modes of dispersal, transport pathways and post-depositional diagenetic alteration. Working with cores collected from the Chukchi ...
  • Sources and fate of freshwater exported in the East Greenland Current 
    Dodd, Paul A.; Heywood, Karen J.; Meredith, Michael P.; Naveira-Garabato, Alberto C.; Marca, Alina D.; Falkner, Kelly (American Geophysical Union, 2009-10-13)
    Monitoring the sources and fate of freshwater in the East Greenland Current (EGC) is important, as this water has the potential to suppress deep convection in the Nordic and Labrador Seas if the outflow of freshwater ...
  • Temporal variability of Cd, Pb, and Pb, isotope deposition in central Greenland snow 
    Sherrell, R. M.; Boyle, E. A.; Harris, N. R.; Falkner, Kelly (American Geophysical Union and the Geochemical Society, 2000-05-30)
    We present a decade-long (1981–1990) high-resolution (subseasonal) record of Pb and Cd concentrations and Pb isotopic composition in a series of 119 snow samples from a 6-m snow pit at Summit, Greenland. Both metals sh ...
  • Th-234 applied to particle removal rates from the surface ocean: A mathematical treatment revisited 
    Alleau, Y.; Colbert, D.; Covert, P.; Haley, Brian A.; Qiu, X.; Collier, Robert W.; Falkner, Kelly; Hales, Burke; Prahl, Fredrick; Gordon, L. (American Geophysical Union, 2001-07-15)
    It has been recognized since the 1950's that radioisotopic disequilibrium between naturally occurring parent-daughter isotope pairs in seawater can provide information on the rate of processes segregating them. In the ...
  • Tracer-derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007 
    Abrahamsen, E. Povl; Meredith, Michael P.; Falkner, Kelly; Torres-Valdes, Sinhue; Leng, Melanie J.; Alkire, Matthew B.; Bacon, Sheldon; Laxon, Seymour W.; Polyakov, Igor; Ivanov, Vladimir (American Geophysical Union, 2009-04-02)
    We investigate the freshwater composition of the shelf and slope of the Arctic Ocean north of the New Siberian Islands using geochemical tracer data (δ¹⁸O, Ba, and PO₄*) collected following the extreme summer of 2007. ...
  • Tracing Pacific water in the North Atlantic Ocean 
    Jones, E. P.; Swift, J. H.; Anderson, L. G.; Lipizer, M.; Civitarese, G.; Falkner, Kelly; Kattner, G.; McLaughlin, F. A. (American Geophysical Union, 2003-04-12)
    In the Arctic Ocean, Pacific source water can be distinguished from Atlantic source water by nitrate-phosphate concentration relationships, with Pacific water having higher phosphate concentrations relative to those of ...
  • Wind-driven transport pathways for Eurasian Arctic river discharge 
    Guay, Christopher K. H.; Falkner, Kelly; Muench, Robin D.; Mensch, Manfred; Frank, Markus; Bayer, Reinhold (American Geophysical Union, 2001-06-15)
    Distributions of temperature, salinity, and barium in near-surface waters (depth ≤ 50 m) of the Laptev Sea and adjacent areas of the Arctic Ocean are presented for the summers of 1993, 1995, and 1996. The tracer data ind ...

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