Pulses of Rapid Ventilation in the North Atlantic Surface Ocean During the Past Century

The Suess Effect is a gradual decrease of the 14 C/ 12 C ratio in tree rings from 1870 to 1950 that is attributed mostly to the burning of 14 C-free fossil fuels for energy. In contrast, pre-nuclear bomb high-precision measurements of 14 C/ 12 C ratios in banded corals from the North Atlantic Ocean...

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Bibliographic Details
Published in:Science
Main Author: Druffel, Ellen R. M.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1997
Subjects:
Multidisciplinary
North Atlantic
Online Access:http://dx.doi.org/10.1126/science.275.5305.1454
https://syndication.highwire.org/content/doi/10.1126/science.275.5305.1454
Description
Summary:The Suess Effect is a gradual decrease of the 14 C/ 12 C ratio in tree rings from 1870 to 1950 that is attributed mostly to the burning of 14 C-free fossil fuels for energy. In contrast, pre-nuclear bomb high-precision measurements of 14 C/ 12 C ratios in banded corals from the North Atlantic Ocean do not exhibit the expected Suess Effect. Instead, large biennial-to-decadal shifts in the 14 C/ 12 C ratios appear throughout the coral records. This pattern indicates that rapid pulses of increased mixing between surface and subsurface waters occurred in the North Atlantic Ocean during the past century.

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