Browsing by Author "Pike, Steven M."


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Browsing by Author "Pike, Steven M."

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  • Kamenik, J.; Dulaiova, Henrieta; Buesseler, Ken O.; Pike, Steven M.; Stastna, K. (Copernicus Publications on behalf of the European Geosciences Union, 2013-09-23)
    Surface seawater 134Cs and 137Cs samples were collected in the central and western North Pacific Ocean during the 2 yr after the Fukushima Dai-ichi Nuclear Power Plant accident to monitor dispersion patterns of these ...
  • Buesseler, Ken O.; Jayne, Steven R.; Fisher, Nicholas S.; Rypina, Irina I.; Baumann, Hannes; Baumann, Zofia; Breier, Crystaline F.; Douglass, Elizabeth M.; George, Jennifer; Macdonald, Alison M.; Miyamoto, Hiroomi; Nishikawa, Jun; Pike, Steven M.; Yoshida, Sachiko (National Academy of Sciences, 2012-04-02)
  • Buesseler, Ken O.; Andrews, J. E.; Pike, Steven M.; Charette, Matthew A.; Goldson, Laura E.; Brzezinski, Mark A.; Lance, V. P. (2004-07-26)
    We studied the effect of iron addition on particle export in the Southern Ocean by measuring changes in the distribution of thorium-234 during a 4 week Fe enrichment experiment conducted in the high-silicate high-nitrate ...
  • Buesseler, Ken O.; Lamborg, Carl H.; Cai, Pinghe; Escoube, Raphaelle; Johnson, Rodney J.; Pike, Steven M.; Masque, Pere; McGillicuddy, Dennis J.; Verdeny, E. (2007-09-25)
    We examined the impact of a cyclonic eddy and mode-water eddy on particle flux in the Sargasso Sea. The primary method used to quantify flux was based upon measurements of the natural radionuclide, 234Th, and these flux ...
  • Dai, Minhan; Buesseler, Ken O.; Pike, Steven M. (2004-01-27)
    We examined the concentration, size distribution, redox state and isotopic composition of plutonium (Pu) in groundwater at the 100K-Area at the US Department of Energy’s (DOE) Hanford Site. Total concentrations of Pu ...
  • Charette, Matthew A.; Breier, Crystaline F.; Henderson, Paul B.; Pike, Steven M.; Rypina, Irina I.; Jayne, Steven R.; Buesseler, Ken O. (Copernicus Publications on behalf of the European Geosciences Union, 2013-03-28)
    Radium has four naturally occurring isotopes that have proven useful in constraining water mass source, age, and mixing rates in the coastal and open ocean. In this study, we used radium isotopes to determine the fate and ...
  • Buesseler, Ken O.; Pike, Steven M.; Maiti, Kanchan; Lamborg, Carl H.; Siegel, David A.; Trull, Thomas W. (2009-03-27)
    An extensive 234Th data set was collected at two sites in the North Pacific: ALOHA, an oligotrophic site near Hawaii, and K2, a mesotrophic HNLC site in the NW Pacific as part of the VERTIGO (VERtical Transport in the ...

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