ANáLISIS GEOQUíMICO DE TESTIGOS DE HIELO PROVENIENTES DE TRAVESíA ANTáRTICA- RESULTADOS PRELIMINARES

two ice cores, ic-5 (82°30.5's, 79°28'w, 950 m a.s.l.; 42.5 m) and one ic-6 (, 81°03's, 79°51'w, 750 m a.s.l; 36 m) were collected as part of the 2004/2005 chilean (with brazilian collaboration) itase traverse from patriot hills to the south pole. mean accumulation rates in water equivalent calculated for the upper 10 m at the ic5 site is 0.37 m a-1 and 0.33 m a-1 at the site ic6. coregistered samples (1595 for ic5 and 1368 for ic6) were obtained using a discrete continuous melter system with a pure nickel melt head at the climate change institute under class 100 clean room conditions. all samples were analysed by ion chromatography (ic), inductively coupled plasma field mass spectrometry (icp-ms), and stable isotope ratio mass spectrometry (irms).