Decadal record of climate variability spanning the past 700 yr in the Southern Tropics of East Africa

Thomas C. Johnson, Sylvia L. Barry, Yvonne Chan, Paul Wilkinson

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Biogenic silica profiles in varved sediments from northern Lake Malawi (Nyasa), East Africa, span the past 700 yr and reflect past primary productivity in the overlying waters. On a centennial scale this has been influenced by lake level and a consequent shift in the location of high diatom productivity within the lake basin. Primary production was higher during the Little Ice Age, an arid period from about A.D. 1570 to 1850, when lake level was about 120 m lower than during the previous three centuries or the past 150 yr.

Original languageEnglish (US)
Pages (from-to)83-86
Number of pages4
JournalGeology
Volume29
Issue number1
DOIs
StatePublished - Jan 2001
Externally publishedYes

Bibliographical note

Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

Keywords

  • Africa
  • Lake sediments
  • Little Ice Age
  • Paleoclimate
  • Tropical climate

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