Glacial-interglacial changes in the occurrence of Pb, Cd, Cu and Zn in Vostok Antarctic ice from 240 to 410 kyr BP
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- Glacial-interglacial changes in the occurrence of Pb, Cd, Cu and Zn in Vostok Antarctic ice from 240 to 410 kyr BP
- Other Titles
- 남극보스톡빙하에서 24만 년전부터 41만 년전까지 기후변화에 따른 납, 카드뮴, 구리, 아연의 농도 변화 연구
- C.F. Ferrari
Hur, Soon Do
- Antarctic ice; Climatic changes; Heavy metals; Vostok ice core
- Issue Date
- C.F. Ferrari, et al. 2005. "Glacial-interglacial changes in the occurrence of Pb, Cd, Cu and Zn in Vostok Antarctic ice from 240 to 410 kyr BP". Journal of Environmental Monitoring(1): 1326-1331.
- Lead (Pb), cadmium (Cd), copper (Cu) and zinc (Zn) have been measured by Electrothermal Atomic Absorption Spectrometry in various sections of the 3623 m deep ice core drilled at Vostok, in central East Antarctica. The sections were dated from 240 to 410 kyr BP (Marine Isotopic Stages (MIS) 7.5 to 11.3), which corresponds to the 3rd and 4th glacial-interglacial cycles before present. Concentrations are found to have varied greatly during this 170 kyr time period, with high concentration values during the coldest climatic stages such as MIS 8.4 and 10.2 and much lower concentration values during warmer periods, such as the interglacials MIS 7.5, 9.3 and 11.3. Rock and soil dust were the dominant sources for Pb, whatever the period, and for Zn and Cu and possibly Cd during cold climatic stages. The contribution from volcanic emissions was important for Cd during all periods and might have been significant for Cu and Zn during warm periods.
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