Deuterium–hydrogen ratios, electrical conductivity and nitrate for high-resolution dating of polar ice cores
| Autor: | Claude M. Laird, Gisela A. M. Dreschhoff, Högne Jungner |
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| Přispěvatelé: | Natural Sciences Unit, Finnish Museum of Natural History |
| Rok vydání: | 2020 |
| Předmět: |
Atmospheric Science
Materials science 010504 meteorology & atmospheric sciences Hydrogen Analytical chemistry chemistry.chemical_element lcsh:QC851-999 114 Physical sciences 01 natural sciences Ion symbols.namesake chemistry.chemical_compound Ice core Nitrate nitrate Electrical resistivity and conductivity high-resolution dating deuterium Physics::Atmospheric and Oceanic Physics 0105 earth and related environmental sciences Fourier transform Deuterium chemistry symbols Polar lcsh:Meteorology. Climatology ice core |
| Zdroj: | Tellus: Series B, Chemical and Physical Meteorology, Vol 72, Iss 1, Pp 1-6 (2020) |
| ISSN: | 1600-0889 0280-6509 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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