HR: 0830h
AN: A11E-0026    [PDF]
TI: High-Resolution Dust Flux Records at Siple Dome and Other West Antarctic Sites
AU: * Banta, J
EM: rbanta@dri.edu
AF: Desert Research Institue, Division of Hydrologic Sciences, 2215 Raggio Parkway, Reno, NV 89512 United States
AU: McConnell, J R
EM: jmcconn@dri.edu
AF: Desert Research Institue, Division of Hydrologic Sciences, 2215 Raggio Parkway, Reno, NV 89512 United States
AU: Lamorey, G W
EM: gregg@dri.edu
AF: Desert Research Institue, Division of Hydrologic Sciences, 2215 Raggio Parkway, Reno, NV 89512 United States
AU: Edwards, R
EM: redwards@dri.edu
AF: Desert Research Institue, Division of Hydrologic Sciences, 2215 Raggio Parkway, Reno, NV 89512 United States
AU: Frey, M
EM: mfrey@hwr.arizona.edu
AF: University of Arizona, Dept. of Hydrology & Water Resources, Harshbarger Bldg 011, Tcson, AZ 85721 United States
AB: Using a newly developed methodology called Continuous Flow Analysis with Trace Elements (CFA-TE), a high resolution trace element dust flux record over recent centuries has been developed for ice cores from several West Antarctic sites including Siple Dome. Many of these elements have not been previously measured in West Antarctica. Utilizing the CFA-TE methodology, melt from a continuous ice core melter is simultaneously input in real time to both an HR-ICP-MS and an ICP-OES. The result is a broad range of high resolution elemental measurements at very high resolution, thus providing exactly dated and co-registered elemental fingerprints of continental dust. The temporal resolution of CFA on the West Antarctic ice cores range from approximately 15 to 40 samples per year. These records indicate that continental dust fluxes to West Antarctica vary on the order of 40% and 20% for annual and decadal scales respectively.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0330 Geochemical cycles
DE: 1620 Climate dynamics (3309)
DE: 1827 Glaciology (1863)
DE: 3349 Polar meteorology
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting