Long-Term Variability of Temperature and 14 C in the Gulf Stream: Oceanographic Implications

Variability in temperature and 14 C levels are recorded in coralline aragonite that grew in the Gulf Stream during the past four centuries. In particular, 18 O/ 16 O ratios reflect a decrease of ca 1°C in surface water temperature during the latter part of the Little Ice age. 14 C levels also rose i...

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Bibliographic Details
Published in:Radiocarbon
Main Author: Druffel, Ellen M
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1983
Subjects:
General Earth and Planetary Sciences
Archeology
North Atlantic
Online Access:http://dx.doi.org/10.1017/s0033822200005749
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200005749
Description
Summary:Variability in temperature and 14 C levels are recorded in coralline aragonite that grew in the Gulf Stream during the past four centuries. In particular, 18 O/ 16 O ratios reflect a decrease of ca 1°C in surface water temperature during the latter part of the Little Ice age. 14 C levels also rose in the surface waters of the Gulf Stream and in atmospheric CO 2 during the Maunder minimum. These observations indicate that ocean circulation may have been significantly different in the North Atlantic around the beginning of the 18th century.

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