A High-Resolution Continuous Flow Analysis System for Polar Ice Cores

Remi Dallmayr; Kumiko Goto-Azuma; Helle Astrid Kjær; Nobuhiko Azuma; Morimasa Takata; Simon Schüpbach; Motohiro Hirabayashi

doi:10.5331/bgr.16r03

A High-Resolution Continuous Flow Analysis System for Polar Ice Cores

Remi Dallmayr, Kumiko Goto-Azuma, Helle Astrid Kjær, Nobuhiko Azuma, Morimasa Takata, Simon Schüpbach, Motohiro Hirabayashi

Physics of Ice, Climate and Earth

1 Citation (Scopus)

Abstract

In recent decades, the development of continuous flow analysis (CFA) technology for ice core analysis has enabled greater sample throughput and greater depth resolution compared with the classic discrete sampling technique. We developed the first Japanese CFA system at the National Institute of Polar Research
(NIPR) in Tokyo. The system allows the continuous analysis of stable water isotopes and electrical conductivity, as well as the collection of discrete samples from both inner and outer parts of the core. This CFA system was designed to have sufficiently high temporal resolution to detect signals of abrupt climate change in deep polar ice cores. To test its performance, we used the system to analyze different climate intervals in ice drilled at the NEEM (North Greenland Eemian Ice Drilling) site, Greenland. The quality of our continuous measurement of stable water isotopes has been confirmed through a comparison with
different datasets. Moreover, our system presents a better measurement efficiency to resolve the signal of electrical conductivity in the ice core sample than that obtained with a similar system developed by the University of Bern, Switzerland, during a field campaign at NEEM camp.

Original language	English
Journal	Bulletin of Glaciological Research
Volume	34
Pages (from-to)	11-20
ISSN	1345-3807
DOIs	https://doi.org/10.5331/bgr.16r03
Publication status	Published - 2016

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Cite this

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title = "A High-Resolution Continuous Flow Analysis System for Polar Ice Cores",

abstract = "In recent decades, the development of continuous flow analysis (CFA) technology for ice core analysis has enabled greater sample throughput and greater depth resolution compared with the classic discrete sampling technique. We developed the first Japanese CFA system at the National Institute of Polar Research(NIPR) in Tokyo. The system allows the continuous analysis of stable water isotopes and electrical conductivity, as well as the collection of discrete samples from both inner and outer parts of the core. This CFA system was designed to have sufficiently high temporal resolution to detect signals of abrupt climate change in deep polar ice cores. To test its performance, we used the system to analyze different climate intervals in ice drilled at the NEEM (North Greenland Eemian Ice Drilling) site, Greenland. The quality of our continuous measurement of stable water isotopes has been confirmed through a comparison withdifferent datasets. Moreover, our system presents a better measurement efficiency to resolve the signal of electrical conductivity in the ice core sample than that obtained with a similar system developed by the University of Bern, Switzerland, during a field campaign at NEEM camp. ",

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doi = "10.5331/bgr.16r03",

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T1 - A High-Resolution Continuous Flow Analysis System for Polar Ice Cores

AU - Dallmayr, Remi

AU - Goto-Azuma, Kumiko

AU - Kjær, Helle Astrid

AU - Azuma, Nobuhiko

AU - Takata, Morimasa

AU - Schüpbach, Simon

AU - Hirabayashi, Motohiro

PY - 2016

Y1 - 2016

N2 - In recent decades, the development of continuous flow analysis (CFA) technology for ice core analysis has enabled greater sample throughput and greater depth resolution compared with the classic discrete sampling technique. We developed the first Japanese CFA system at the National Institute of Polar Research(NIPR) in Tokyo. The system allows the continuous analysis of stable water isotopes and electrical conductivity, as well as the collection of discrete samples from both inner and outer parts of the core. This CFA system was designed to have sufficiently high temporal resolution to detect signals of abrupt climate change in deep polar ice cores. To test its performance, we used the system to analyze different climate intervals in ice drilled at the NEEM (North Greenland Eemian Ice Drilling) site, Greenland. The quality of our continuous measurement of stable water isotopes has been confirmed through a comparison withdifferent datasets. Moreover, our system presents a better measurement efficiency to resolve the signal of electrical conductivity in the ice core sample than that obtained with a similar system developed by the University of Bern, Switzerland, during a field campaign at NEEM camp.

AB - In recent decades, the development of continuous flow analysis (CFA) technology for ice core analysis has enabled greater sample throughput and greater depth resolution compared with the classic discrete sampling technique. We developed the first Japanese CFA system at the National Institute of Polar Research(NIPR) in Tokyo. The system allows the continuous analysis of stable water isotopes and electrical conductivity, as well as the collection of discrete samples from both inner and outer parts of the core. This CFA system was designed to have sufficiently high temporal resolution to detect signals of abrupt climate change in deep polar ice cores. To test its performance, we used the system to analyze different climate intervals in ice drilled at the NEEM (North Greenland Eemian Ice Drilling) site, Greenland. The quality of our continuous measurement of stable water isotopes has been confirmed through a comparison withdifferent datasets. Moreover, our system presents a better measurement efficiency to resolve the signal of electrical conductivity in the ice core sample than that obtained with a similar system developed by the University of Bern, Switzerland, during a field campaign at NEEM camp.

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DO - 10.5331/bgr.16r03

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SP - 11

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JO - Bulletin of Glaciological Research

JF - Bulletin of Glaciological Research

ER -

A High-Resolution Continuous Flow Analysis System for Polar Ice Cores

Abstract

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