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(Article of periodic en Anglais - 2000)

Document title

Speleothem evidence for changes in Indian summer monsoon precipitation over the last 2300 years

Authors(s) and Affiliation(s)

DENNISTON R.F. ; GONZÁLEZ L.A. ; ASMEROM Y. ; SHARMA R.H. ; REAGAN M.K. ;

Abstract

Speleothems from a well-ventilated dolomitic cave in the Pokhara Valley, central Nepal, preserve a mineralogic record of Indian summer monsoon variability over the past 2300 yr. Annually deposited aragonite layers formed between 2300 and 1500 yr B.P., indicating reduced monsoon precipitation and increased cave aridity, whereas alternating calcite/aragonite laminae deposited after 1500 yr B.P. record elevated summer monsoon precipitation and increased cave humidity. Dense, optically clear calcite layers deposited from 450 to 360 yr B.P. indicate a less-evaporative cave environment and suggest moister and/or cooler conditions , possibly related to the Little Ice Age

Source

Article of periodic

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

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

Millesime : 2000, vol. 53, no2 [pp. 196-202]

Bibliographic references : 49 ref.

Collation : Illustration ;

Language

Anglais

INIST-CNRS, Cote INIST : 15739

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2000.
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