Abstract:
Iron, manganese and aluminium concentrations have been determined in modern and ancient East Antarctic snow from sea-ice and continental sites. Modern snow samples were collected from sites in Prydz Bay, Dumont d'Urville sea, Ross Sea and Princess Elizabeth Land. Trace metal concentrations in ancient snow were determined form ice cores drilled from Law Dome, Wilkes Land. The ice cores analysed included DSS, DEO8-1 and BHC1.
This work was completed as part of ASAC project 827 (ASAC_827).
Quality
Data has been published. Snow samples were collected using ultra-trace metal clean techniques. This included the use of clean-room apparel and identifying uncontaminated sites. All sampling ware were cleaned in acid bathes over several weeks. Samples were transported to Hobart frozen and thawed as required. Ice core samples were obtained from the Australian Antarctic Division ice core depository. ... Before analysis ice core samples were decontaminated by mechanically removing the external layers with chisels (acid cleaned stainless steel and zirconia oxide). The majority of the decontamination work was performed in France in collaboration with Claude Boutron of LGGE, Grenoble. Iron concentrations were determined by Flow Injection Analysis (FIA) with spectrophotometric detection. Other elements were determined by High Resolution Inductively Coupled Plasma Mass Spectrometry (HR-ICP-MS).
Access Constraints
These data are available for download at the provided URL.
Edwards, R., and P. Sedwick (2001), Iron in East Antarctic snow: Implications for atmospheric iron deposition and algal production in Antarctic waters, Geophys. Res. Lett., 28, 20, 3907-3910, doi:doi:10.1029/2001GL012867
Edwards, R., P. Sedwick, Morgan V. and Boutron C. (2006), Iron in ice cores from Law Dome: A record of atmospheric iron deposition for maritime East Antarctica during the Holocene and Last Glacial Maximum, Geochemistry, Geophysics and Geosystems, 7, Q12Q01
