An Improved Continuous Flow Analysis System for High-Resolution Field Measurements on Ice Cores

被引：101

作者：

Kaufmann, Patrik R. ^{[1
,2
]}

Federer, Urs ^{[1
,2
]}

Hutterli, Manuel A. ^{[3
]}

Bigler, Matthias ^{[4
]}

Schuepbach, Simon ^{[1
,2
]}

Ruth, Urs ^{[5
]}

Schmitt, Jochen ^{[1
,2
,5
]}

Stocker, Thomas F. ^{[1
,2
]}

机构：

[1] Univ Bern, Inst Phys, Bern, Switzerland

[2] Univ Bern, Oeschger Ctr Climate Change Res, Bern, Switzerland

[3] British Antarctic Survey, Cambridge CB3 0ET, England

[4] Univ Copenhagen, Niels Bohr Inst, Ctr Ice & Climate, DK-2100 Copenhagen, Denmark

[5] Alfred Wegener Inst Polar & Marine Res, D-2850 Bremerhaven, Germany

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2008年 / 42卷 / 21期

基金：

英国自然环境研究理事会; 瑞士国家科学基金会;

关键词：

D O I：

10.1021/es8007722

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Continuous flow analysis (CFA) is a well-established method to obtain information about impurity contents in ice cores as indicators of past changes in the climate system. A section of an ice core is continuously melted on a melter head supplying a sample water flow which is analyzed online. This provides high depth and time resolution of the ice core records and very efficient sample decontamination as only the inner part of the ice sample is analyzed. Here we present an improved CFA system which has been totally redesigned in view of a significantly enhanced overall efficiency and flexibility, signal quality, compactness, and ease of use. These are critical requirements especially for operations of CFA during field campaigns, e.g., in Antarctica or Greenland. Furthermore,a novel device to measure the total air content in the ice was developed. Subsequently, the air bubbles are now extracted continuously from the sample water flow for subsequent gas measurements.

引用

页码：8044 / 8050

页数：7

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