Thompson et al. (2003)
Decadally averaged d18O (1990 - 1000 A.D.)
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Guliya ice cap. Core location: 35°17'N, 81°29'E 6200m. above sea level
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In 1992 a 308.6 m core to bedrock was drilled on the Guliya ice cap
in the far western Kunlun Shan on the Qinghai-Tibetan Plateau, China.
The core was recovered using an electromechanical drill in a dry hole
to 200 m and a thermal drill with an alcohol-water mixture from 200 m
to bedrock (308.6 m). No hiatus was observed in the core, and the visible
layers were horizontal throughout. The entire length of the frozen core
was analyzed by cutting 12,628 samples for oxygen isotopic
(d18O) measurements, 12,480
samples for dust concentrations, and 9,681 samples for anion
Cl, NO3, and SO4 concentrations.
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References:
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Thompson, L.G., T. Yao, M.E. Davis, K.A. Henderson, E. Mosley-Thompson,
P.N. Lin, J. Beer, H.-A. Synal, J. Cole-Dai, and J.F. Bolzan. 1997.
Tropical climate instability: The last glacial cycle from a Qinghai-Tibetan
ice core.
Science, 276, 1821-25.
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Thompson, L.G., E. Mosley-Thompson, M.E. Davis, P.-N. Lin, K. Henderson,
and T.A. Mashiotta. 2003.
Tropical glacier and ice core evidence of climate change on annual to
millennial time scales.
Climatic Change, 59, 137-155.
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