A new Andean deep ice core from Nevado Illimani (6350 m), Bolivia

Edson Ramírez Rodriguez, G. Hoffmann, J. D. Taupin, B. Francou, P. Ribstein, N. Caillon, F. A. Ferron, A. Landais, J. R. Petit, B. Pouyaud, U. Schotterer, J. C. Simoes, M. Stievenard

Research output: Contribution to journalArticlepeer-review

105 Scopus citations

Abstract

A new ice core record from the Nevado Illimani (16°S), Bolivia, covers approximately the last 18 000 years BP. A comparison with two published ice records, from Sajama (18°S), Bolivia [Thompson et al., Science 282 (1998) 1858-1864] and Huascarán (9°S), Peru [Thompson et al., Science 269 (1996) 46-50], documents a regionally coherent transition from glacial to modern climate conditions in South America north of 20°S. The strong resemblance between the Illimani and Huascarán water isotope records and their differences from the Sajama record, in particular during the period from 9000 years BP to 14 000 years BP, suggest that local water recycling or local circulation changes played a major role for Sajama. We interpret the common Illimani/Huascarán water isotope history in terms of a common change from wetter/cooler conditions during glacial times to drier/warmer conditions in the Early Holocene.

Original languageEnglish
Pages (from-to)337-350
Number of pages14
JournalEarth and Planetary Science Letters
Volume212
Issue number3-4
DOIs
StatePublished - 25 Jul 2003
Externally publishedYes

Keywords

  • Glaciology
  • Ice cores
  • Tropical climate during the last glacial
  • Water isotopes in the Andes

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