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(Article of periodic en Anglais - 2001)

Document title

Evidence for millennial-scale climate change during marine isotope stages 2 and 3 at Little Lake, Western Oregon, USA

Authors(s) and Affiliation(s)

GRIGG L.D. ; WHITLOCK C. ; DEAN W.E. ;

Abstract

Pollen and geochemical data from Little Lake, western Oregon, suggest several patterns of millenial-scale environmental change during marine isotope stage (MIS)2 (14,100-27,600 cal yr B.P.) and the latter part of MIS3 (27,600-42,500 cal yr B.P.). During MIS3, a series of transitions between warm- and cold-adapted taxa indicate that temperatures oscillated by ca. 2°-4° every 1000-3000 yr. Warm periods at Little Lake correlate with warm sea-surface temperatures in the Santa Barbara Basin. Changes in the strength of the subtropical high and the jet stream may account for synchronous changes at the two sites. During MIS2, fluctuations in precipitation at Little Lake do not correlate with changes in the Santa Barbara Basin and may be explained by variations in the strength of the glacial anticyclone and the position of the jet stream

Source

Article of periodic

published at : Quaternary research / ISSN 0033-5894 / CODEN QRESAV

Editor : Elsevier, San Diego, CA - ETATS-UNIS (1970)

Millesime : 2001, vol. 56, no1 [pp. 10-22]

Bibliographic references : 53 ref.

Collation : Illustration ;

Language

Anglais

INIST-CNRS, Cote INIST : 15739

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2002.
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