Deuterium–hydrogen ratios, electrical conductivity and nitrate for high-resolution dating of polar ice cores

Gisela Dreschhoff; Högne Jungner; Claude M. Laird

doi:10.1080/16000889.2020.1746576

Deuterium–hydrogen ratios, electrical conductivity and nitrate for high-resolution dating of polar ice cores

Tellus B: Chemical and Physical Meteorology

Volume 72 (2020): Issue 1

By: Gisela Dreschhoff, Högne Jungner and Claude M. Laird

Open Access

|Jan 2020

Abstract

In order to support the very high time resolution required to observe short-term variations in nitrates and all other ions represented by electrical conductivity in polar ice, a Fourier transform infrared spectrometer was developed for measurement of deuterium concentration in ice samples, as an additional support for the timescale of ultra-high resolution. The portable instrument provided the possibility to measure deuterium concentration on exactly the same samples as used for measuring nitrate concentrations and liquid electrical conductivity, thus verifying that the original dating of the annual variations in nitrate was correct. We present basic information about how the high-resolution data were obtained and discuss their reliability and significance.

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DOI: https://doi.org/10.1080/16000889.2020.1746576 | Journal eISSN: 1600-0889

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Language: English

Page range: 1746576 - 1746576

Published on: Jan 1, 2020

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

Keywords:

deuterium,

nitrate,

ice core,

high-resolution dating

© 2020 Gisela Dreschhoff, Högne Jungner, Claude M. Laird, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 72 (2020): Issue 1