A 3000-Year Climatic Record from Biogenic Silica Oxygen Isotopes in an Equatorial High-Altitude Lake-Reference-Cited by-同舟云学术

A 3000-Year Climatic Record from Biogenic Silica Oxygen Isotopes in an Equatorial High-Altitude Lake

Published:1998-08-14 Issue:5379 Volume:281 Page:980-982
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Rietti-Shati M.¹,Shemesh A.¹,Karlen W.¹

Affiliation:

1. M. Rietti-Shati and A. Shemesh, Department of Environmental Sciences and Energy Research, Weizmann Institute of Science, Rehovot 76100, Israel. W. Karlen, Department of Physical Geography, University of Stockholm, Stockholm S-106 91, Sweden.

Abstract

A record of oxygen isotopes in biogenic opal, 4200 to 1200 calibrated years before the present, from a high-altitude proglacial lake on Mount Kenya, East Africa, exhibits short-term fluctuations on a time scale of centuries as well as long-term variations. The short-term fluctuations are attributed to changes in the glacier meltwater input, and the long-term variations are related to changes in lake temperature. The record indicates that the climate was warm in Equatorial East Africa from 2300 to 1500 years before the present.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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