Record drilling depth struck in Greenland

P. A. Mayewski, M. S. Twickler, J. E. Dibb, M. Wumkes, J. Klinck, J. S. Putscher, K. C. Taylor, A. J. Gow, D. A. Meese, E. D. Waddington, R. B. Alley, P. M. Grootes, M. Ram, M. Wahlen, A. T. Wilson

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


On July 1, 1993, after 5 years of drilling, the Greenland Ice Sheet Project (GISP2) penetrated several meters of silty ice and reached bedrock at a depth of 3053.4 m. It then penetrated 1.5 m into the bedrock, producing the deepest ice core ever recovered (Figure 1). In July 1992, a nearby European ice coring effort, the Greenland Ice Core Project (GRIP), reached an ice depth of 3028.8 m, providing more than 250,000 years of record. Comparisons between these ice core records have already demonstrated the remarkable reproducibility of the upper ∼90% of the records unparalleled view of climatic and environmental change.

Original languageEnglish (US)
Pages (from-to)113-124
Number of pages12
JournalEos, Transactions American Geophysical Union
Issue number10
StatePublished - Mar 8 1994

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)


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