HR: 0800h
AN: C41A-0187    [Abstracts]
TI: Multi-Year Observations of Metal Concentrations in Major Arctic Rivers
AU: * Guay, C K
EM: ckguay@lbl.gov
AF: Earth Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road MS 90-1116, Berkeley, CA 94720 United States
AU: Zhulidov, A V
EM: zhulidov@cppis.rsu.ru
AF: South-Russia Regional Centre for Preparation and Implementation of International Projects (CPPI-S), 200/1 Stachki Av., Office 301, Rostov-on-Don, 344090 Russian Federation
AU: Robarts, R D
EM: Richard.Robarts@EC.GC.CA
AF: UNEP GEMS/Water Programme Office, 867 Lakeshore Road, Burlington, ON L7R4A6 Canada
AU: Zhulidov, D A
EM: zhulidov@cppis.rsu.ru
AF: South-Russia Regional Centre for Preparation and Implementation of International Projects (CPPI-S), 200/1 Stachki Av., Office 301, Rostov-on-Don, 344090 Russian Federation
AU: Gurtovaya, T Y
EM: Tanya@cppis.rsu.ru
AF: South-Russia Regional Centre for Preparation and Implementation of International Projects (CPPI-S), 200/1 Stachki Av., Office 301, Rostov-on-Don, 344090 Russian Federation
AU: Holmes, R M
EM: RHolmes@mbl.edu
AF: The Ecosystems Center, Marine Biological Laboratory, 7 MBL Street, Woods Hole, MA 02543 United States
AU: Peterson, B J
EM: peterson@mbl.edu
AF: The Ecosystems Center, Marine Biological Laboratory, 7 MBL Street, Woods Hole, MA 02543 United States
AU: McClelland, J W
EM: jmcclelland@mbl.edu
AF: The Ecosystems Center, Marine Biological Laboratory, 7 MBL Street, Woods Hole, MA 02543 United States
AU: Headley, J V
EM: John.Headley@EC.GC.CA
AF: Aquatic Ecosystem Protection Research Branch, National Water Research Institute, Environment Canada 11 Innovation Boulevard, Saskatoon, SK S7N3H5 Canada
AB: The PARTNERS project is a multi-year effort to measure several biogeochemical parameters in the six largest rivers that drain the watershed of the Arctic Ocean (Yenisey, Lena, Ob, Mackenzie, Yukon, and Kolyma) as a means to study the origins and fates of continental runoff. Here we report results of analyses of water samples collected in 2003-2004 for a suite of dissolved metals including Ba, Cd, Ce, Co, Cr, Cs, Cu, Fe, Li, Mn, Mo, Ni, Pb, Rb, Re, Sr, Tl, U, V, and Zn. These data demonstrate the variability in metals levels between rivers and the seasonal/interannual variability within individual rivers. The PARTNERS data are compared with previously unpublished measurements of dissolved and particulate concentrations of Cd, Cu, Pb and Zn in samples of water and suspended sediment collected in summer 1998 from the lower reaches of six major Eurasian arctic rivers: the Onega, Severnaya Dvina, Mezen, Pechora, Ob and Yenisey (Guay et al., Marine Chemistry, submitted). These data comprise some of the earliest measurements of trace metals in Eurasian arctic rivers above the estuaries using recognized clean techniques. Significant (a = 0.05) differences were observed between the mean concentrations of metals in the individual rivers, with highest levels overall observed in the Severnaya Dvina and Yenisey. Comparing crustal elemental abundances with ratios of Cd:Zn, Cu:Zn and Pb:Zn in the suspended particulate samples suggests contributions of metals to thses rivers from additional sources besides continental weathering.
DE: 4805 Biogeochemical cycles (1615)
DE: 4808 Chemical tracers
DE: 4875 Trace elements
DE: 4207 Arctic and Antarctic oceanography
DE: 1806 Chemistry of fresh water
SC: Cryosphere [C]
MN: 2004 AGU Fall Meeting