A note on reporting of reservoir 14C disequilibria and age offsets
A note on reporting of reservoir 14C disequilibria and age offsets
Date
2016-01
Authors
Soulet, Guillaume
Skinner, Luke C.
Beaupre, Steven R.
Galy, Valier
Skinner, Luke C.
Beaupre, Steven R.
Galy, Valier
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Keywords
Reservoir age
Reservoir effect
Freshwater effect
Hardwater effect
Ventilation age
Radiocarbon
Reservoir effect
Freshwater effect
Hardwater effect
Ventilation age
Radiocarbon
Abstract
Reservoir age offsets are widely used to correct marine and speleothem radiocarbon age measurements for various calibration purposes. They also serve as a powerful tracer for carbon cycle dynamics. However, a clear terminology regarding reservoir age offsets is lacking, sometimes leading to miscalculations. This note seeks to provide consistent conventions for reporting reservoir 14C disequilibria useful to a broad range of environmental sciences. This contribution introduces the F14R and δ14R metrics to express the relative 14C disequilibrium between two contemporaneous reservoirs and the R metric as the associated reservoir age offset.
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Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here for personal use, not for redistribution. The definitive version was published in Radiocarbon 58 (2016): 205-211, doi:10.1017/RDC.2015.22.