Abstract
Ice cores contain information on climatic variations and their causes. Recent results obtained on the new deep ice core drilled in 1981 at Dye 3, South Greenland, in the frame of the US-Danish-Swiss Greenland Ice Sheet Program are:
-
Comparison of the δ 180 variations in the Greenland ice cores with those in European lake carbonate exhibits strong similarities and provides time marks (13,000, 11,000, 10,000 B.P.) for the Late-Glacial section of the ice cores;
-
CO2 concentration measurements in the occluded air indicate low (180–200 ppm) CO2 concentrations 30,000 to 15,000 B.P. and an increase to ca. 300 ppm around 13,000 B.P.,. The CO2 increase might reflect a change in the ocean circulation at the end of the last glaciation and could have contributed to the establishment of the Holocene environmental conditions;
-
10Be concentration measurements on samples covering the last 50,000 yaers show a correlation with δ 180, low δ 180 values corresponding to high 10Be concentrations (atoms per g of ice). Probably this mainly reflects changes in the rate of precipitation in the northern hemisphere.
Based on the ice core information climatic events during the Glacial-Postglacial transition are discussed.
Condensed and slightly modified version of a paper presented at the Ewing Symposium, Fall 1982, at Lamont-Doherty Geophysical Observatory, to appear in the proceedings of this symposium.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
AGU, Proceedings of the Spring meeting 1982, Philadephia, Union session: Greenland Ice Sheet Program, 1983, in press.
Beer, J., Andrée, M., Oeschger, H., Stauffer, B., Balzer, R., Bonani, G., Stoller, Ch., Suter, M., Wolfli, W. and Finkel, R., Temporal 10Be variations in ice, Radiocarbon, Vol., 25, No 2, 1983, pp. 269–278.
Berger, W.H., Johnson, R.F., Killigley, J.S., Unmixing of the deep-sea record and the deglacial meltwater spike, Nature, 269, 661–663. 1977.
Broecker, W.S., Ocean chemistry during glacial time, Geochim. Cosmochim. Acta, 46, 1689–1705, 1982.
Craig, H., Chou, C.C., Methane: The Record in Polar Ice Cores, Geophysical Research Letters, 1982, in press.
Dansgaard, W., Clausen, H.B., Gundestrup, N., Hammer, C.U., Johnsen, S.F., Kristinsdottier, P.M., Reeh, N., A new Greenland deep ice core, Science, 218, 1273–12–7, 1982.
Delmas, R.J., Ascencio, J.M., Legrand, M. Polar ice evidence that atmospheric CO2 20,000 yr B.P. was 50% of present, Nature, 284(5752), 155–157, 1980.
Duplessy, J.C., Delibrias, G., Turon, J.L., Pujol, C., Duprat, J., Deglacial warming of the northeastern North Atlantic Ocean: correlation with the palaeoclimatic evolution of the European continent, Palaeogeogr., Palaeoclimat. Palaeoecol., 35, 121–144. 1981.
Eicher, U., Pollen-und Sauerstoffisotopenanalysen an spätglazialen Profilen vom Gerzensee, Faulenseemoos und vom Regenmoos ob Boltigen, Mitt. Naturforsch. Ges. Bern, 37, 65–80, 1980.
Eicher, U., Siegenthaler, U., Palynological and oxygenisotope investigations on Late-Glacial sediment cores from Swiss lakes, Boreas, 5, 109–117, 1976.
Eicher, U., Siegenthaler, U., Wegmüller, S., Pollen and oxygen isotope analyses on Late-and Post-Glacial sediments of the Tourbière de Chirens (Dauphiné, France), Quat. Res., 15, 160–170, 1981.
Hammer, C.U., Clausen, H.B., Dansgaard, W., Greenland ice sheet evidence of post-glacial volcanism and its climatic impact, Bature, Vol. 288, pp. 230–235.
Herron, M.M., Herron, S.L., Langway, C.C. Climatic Signal of ice melt features in southern Greenland, Nature, Vol. 293, pp. 389–391.
Imbrie, J., Imbrie, J.Z., Modeling the climatic response to orbital variations, Science, 207, 943–953, 1980.
Neftel, A., Oeschger, H., Schwander, J., Stauffer, B., Zumbrunn, R., Ice core sample measurements give atmospheric C02 content during the past 40,000 yr, Nature, 295, 220–223, 1982.
Raisbeck, G.M., Yiou, F., Fruneau, M., Loiseaux, J.M., Lieuvin, M., Ravel, J.C. and Lorius, C., 10Be concentrations in Antarctic ice during past 30,000 years, René Bernas report LRB 81-03, 1981.
Raynaud, D., Delmas, R., Composition des gaz contenus dans la glace polaire, Proceedings of the Int. Symp. on Isotopes and Impurities in Snow and Ice. IAHS-Publication No 118, pp. 377–381, 1977.
Ruddiman, W.F., McIntyre, A., The North Atlantic during the last deglaciation, Palaeoecol., 35, 145–214, 1981.
Scholander, P.F., Hemmingsen, E.A., Coachman, L.K., Nutt, D.C., Composition of gas bubbles in Greenland icebergs, Glaciology, 3, 813–822, 1961.
Siegenthaler, U., Oeschger, H., Heimann, M., 14C variations caused by changes in the global carbon cycle, Radiocarbon, 22, 177–191, 1980.
Stauffer, B., Die Zusammensetzung der Luft in natürlichem Eis, Z.f. Gletscherkunde und Glazialgeologie, 17, 57–78, 1981.
Stauffer, B., Neftel, A., Oeschger, H., Schwander, J., CO2 concentration in air extracted from Greenland ice samples, Proceedings AGU spring Meeting 1982, Philadelphia, 1983, in press.
Worthington, L.V., Genesis and evolution of water masses, Meteorol. Monographs, 8, 63–67, 1968.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1983 ECSC, EEC, EAEC, Brussels and Luxembourg
About this paper
Cite this paper
Oeschger, H., Beer, J., Siegenthaler, U., Stauffer, B., Dansgaard, W., Langway, C.C. (1983). Late-Glacial Climate History from Ice Cores. In: Ghazi, A. (eds) Palaeoclimatic Research and Models. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7236-0_12
Download citation
DOI: https://doi.org/10.1007/978-94-009-7236-0_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-7238-4
Online ISBN: 978-94-009-7236-0
eBook Packages: Springer Book Archive