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Camp Century Ice Core

Download Data via FTP: Camp Century Data

In 1966, the U.S. Army Cold Regions Research and Engineering Laboratory (CRREL) succeeded in drilling the first core to bedrock on the Greenland ice sheet at Camp Century (77 deg. 10 min. N, 61 deg. 08 min. W). By 1963, a thermal coring system, the CRREL drill, had been developed under the scientific leadership of Henri Bader as part of the U.S. International Geophysical Year (IGY) glaciology program in Greenland and Antartctica. In 1960-61, a 186 meter core was recovered. A second hole was drilled in 1962 from which 238 meters of core were obtained. A third hole was started in 1963 and 264 meters of core were recovered. In 1964, the third hole was extended to 535 meters using the thermal drill in a fluid filled hole. In 1965, an electromechanical drill extended the third hole to 1,002 meters and in July 1966, the bottom of the ice was reached at a depth of 1387.4 meters. 3.55 meters of frozen till was also recovered making the total depth of the hole 1391 meters.

Data contained in these files represents delta 18-O and particulate data from the Camp Century ice core. Please read the readme files for information and references to these specific data sets. Other pertinent references are available below.
REFERENCES:
Dansgaard, W., S. J. Johnsen, J. Moller, and C.C. Langway, Jr. 1969. One thousand centuries of climatic record from Camp Century on the Greenland ice sheet. Science, 166:377-381.
Hansen, L.B., and C.C. Langway, Jr. 1966. Deep core drilling in ice and core analysis at Camp Century, Greenland, 1961-1966. CRREL Spec. Report 126, no. 5, p.207-208.
Johnsen, S.J., W. Dansgaard, H.B. Clausen, and C.C. Langway, Jr. 1970. Climatic oscillations 1200-2000 A.D. Nature 227:482-483.
Johnsen, S.J., W. Dansgaard, H.B. Clausen, and C.C. Langway, Jr. 1972. Oxygen isotope profiles through the Antarctic and Greenland ice sheets. Nature 235:429-434.
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