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Asynchronous Terrestrial and Marine Signals of Climate Change During Heinrich Events

  • Tim C. Jennerjahn
  • Venugopalan Ittekkot
  • Helge W. Arz
  • Hermann Behling
  • Jürgen Pätzold
  • Gerold Wefer

Abstract

Tropical regions have been reported to play a key role in climate dynamics. To date, however, there are uncertainties in the timing and the amplitude of the response of tropical ecosystems to millennial-scale climate change. We present evidence of an asynchrony between terrestrial and marine signals of climate change during Heinrich events preserved in marine sediment cores from the Brazilian continental margin. The inferred time lag of about 1000 to 2000 years is much larger than the ecological response to recent climate change and appears to be related to the nature of hydrological changes.

Cite this activity

Jennerjahn T.C., Ittekkot V., Arz H.W., Behling H., Pätzold J. and Wefer G. (2004) Asynchronous Terrestrial and Marine Signals of Climate Change During Heinrich Events. Science 306(5705): 2236-2239. 10.1126/science.1102490

Details

Research topics
Date 24.12.2004
Journal Science
Issue 5705
Volume 306
Pages 2236-2239
Open Access Closed Access
Open Access Status Closed Access
Eprints_link https://cris.leibniz-zmt.de/id/eprint/3638
Peer-Reviewed

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