Progress in paleosalinity: overview and presentation of a new approach
Progress in paleosalinity: overview and presentation of a new approach
This paper concerns the use of stable oxygen isotope ratios (? 18O) and stable hydrogen isotope ratios (? 2H or ?D) to derive paleosalinity. First, I evaluate the potential and limitations of existing methods based on ? 18O and ?D separately. Next, I propose a new theoretical framework for the combined use of ? 18O and ?D to constrain the impact of the hydrological cycle on the surface waters and to thus characterize changes in surface water salinity. This new method is accompanied by an error propagation exercise to demonstrate its limitations and areas of potential improvement. A feasible strategy is outlined for achieving reconstructions of paleosalinity change with an uncertainty of 1 practical salinity unit or less with the newly proposed method (especially in regions with high deuterium excess values).
paleosalinity, oxygen isotopes, hydrogen isotopes
PA3215
Rohling, E.J.
a2a27ef2-fcce-4c71-907b-e692b5ecc685
September 2007
Rohling, E.J.
a2a27ef2-fcce-4c71-907b-e692b5ecc685
Rohling, E.J.
(2007)
Progress in paleosalinity: overview and presentation of a new approach.
Paleoceanography, 22 (3), .
(doi:10.1029/2007PA001437).
Abstract
This paper concerns the use of stable oxygen isotope ratios (? 18O) and stable hydrogen isotope ratios (? 2H or ?D) to derive paleosalinity. First, I evaluate the potential and limitations of existing methods based on ? 18O and ?D separately. Next, I propose a new theoretical framework for the combined use of ? 18O and ?D to constrain the impact of the hydrological cycle on the surface waters and to thus characterize changes in surface water salinity. This new method is accompanied by an error propagation exercise to demonstrate its limitations and areas of potential improvement. A feasible strategy is outlined for achieving reconstructions of paleosalinity change with an uncertainty of 1 practical salinity unit or less with the newly proposed method (especially in regions with high deuterium excess values).
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Published date: September 2007
Keywords:
paleosalinity, oxygen isotopes, hydrogen isotopes
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Local EPrints ID: 47995
URI: http://eprints.soton.ac.uk/id/eprint/47995
ISSN: 0883-8305
PURE UUID: 68e64ecf-6322-4533-b8d0-6d7c8a775f38
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Date deposited: 20 Aug 2007
Last modified: 16 Mar 2024 02:46
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