Evaluation of aeolian dust records obtained from Polar Ice Cores
When an ice core sample is analysed for its aeolian dust content, it is melted and the particles detected are suspended in water. Consequently, dust measurement techniques employed in the ice core community differ from those used for in-situ studies of airborne dust. Methods commonly used to classif...
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ftunivbern:oai:boris.unibe.ch:64739 2023-08-20T04:07:11+02:00 Evaluation of aeolian dust records obtained from Polar Ice Cores Kettner, Ernesto Grinsted, Aslak Wegner, Anna Petit, Jean Robert Erhardt, Tobias Schüpbach, Simon Vallelonga, Paul Svensson, Anders Fiore, Saverio 2014 application/pdf https://boris.unibe.ch/64739/1/kettner14dust.pdf https://boris.unibe.ch/64739/ http://www.scientevents.com/proscience/ eng eng Digilabs S.a.s. https://boris.unibe.ch/64739/ info:eu-repo/semantics/openAccess Kettner, Ernesto; Grinsted, Aslak; Wegner, Anna; Petit, Jean Robert; Erhardt, Tobias; Schüpbach, Simon; Vallelonga, Paul; Svensson, Anders (2014). Evaluation of aeolian dust records obtained from Polar Ice Cores. ProScience Conference Proceedings, 1, pp. 266-272. Digilabs S.a.s. 10.14644/dust.2014.044 <http://dx.doi.org/10.14644/dust.2014.044> 530 Physics info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion PeerReviewed 2014 ftunivbern https://doi.org/10.14644/dust.2014.044 2023-07-31T21:15:13Z When an ice core sample is analysed for its aeolian dust content, it is melted and the particles detected are suspended in water. Consequently, dust measurement techniques employed in the ice core community differ from those used for in-situ studies of airborne dust. Methods commonly used to classify insolubles suspended in a liquid are either based on the particles’ interaction with light or on the detection of resistive pulses by means of Coulter counting. Data sets obtained with Coulter counters are widely accepted as references and other techniques are judged against their ability to reproduce these. Unfortunately, optically acquired ice core dust records were found to differ. By analyzing two sections of the NEEM dust record, two different evaluation procedures are discussed before a third protocol is proposed. It is found that relative changes in the archived dust load can be reproduced, while the simultaneous attainment of absolute concentrations or changes in the grain size frequency histograms in high resolution remains difficult. Conference Object ice core BORIS (Bern Open Repository and Information System, University of Bern) Coulter ENVELOPE(-58.033,-58.033,-83.283,-83.283) |
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Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Kettner, Ernesto Grinsted, Aslak Wegner, Anna Petit, Jean Robert Erhardt, Tobias Schüpbach, Simon Vallelonga, Paul Svensson, Anders Evaluation of aeolian dust records obtained from Polar Ice Cores |
topic_facet |
530 Physics |
description |
When an ice core sample is analysed for its aeolian dust content, it is melted and the particles detected are suspended in water. Consequently, dust measurement techniques employed in the ice core community differ from those used for in-situ studies of airborne dust. Methods commonly used to classify insolubles suspended in a liquid are either based on the particles’ interaction with light or on the detection of resistive pulses by means of Coulter counting. Data sets obtained with Coulter counters are widely accepted as references and other techniques are judged against their ability to reproduce these. Unfortunately, optically acquired ice core dust records were found to differ. By analyzing two sections of the NEEM dust record, two different evaluation procedures are discussed before a third protocol is proposed. It is found that relative changes in the archived dust load can be reproduced, while the simultaneous attainment of absolute concentrations or changes in the grain size frequency histograms in high resolution remains difficult. |
author2 |
Fiore, Saverio |
format |
Conference Object |
author |
Kettner, Ernesto Grinsted, Aslak Wegner, Anna Petit, Jean Robert Erhardt, Tobias Schüpbach, Simon Vallelonga, Paul Svensson, Anders |
author_facet |
Kettner, Ernesto Grinsted, Aslak Wegner, Anna Petit, Jean Robert Erhardt, Tobias Schüpbach, Simon Vallelonga, Paul Svensson, Anders |
author_sort |
Kettner, Ernesto |
title |
Evaluation of aeolian dust records obtained from Polar Ice Cores |
title_short |
Evaluation of aeolian dust records obtained from Polar Ice Cores |
title_full |
Evaluation of aeolian dust records obtained from Polar Ice Cores |
title_fullStr |
Evaluation of aeolian dust records obtained from Polar Ice Cores |
title_full_unstemmed |
Evaluation of aeolian dust records obtained from Polar Ice Cores |
title_sort |
evaluation of aeolian dust records obtained from polar ice cores |
publisher |
Digilabs S.a.s. |
publishDate |
2014 |
url |
https://boris.unibe.ch/64739/1/kettner14dust.pdf https://boris.unibe.ch/64739/ http://www.scientevents.com/proscience/ |
long_lat |
ENVELOPE(-58.033,-58.033,-83.283,-83.283) |
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Coulter |
geographic_facet |
Coulter |
genre |
ice core |
genre_facet |
ice core |
op_source |
Kettner, Ernesto; Grinsted, Aslak; Wegner, Anna; Petit, Jean Robert; Erhardt, Tobias; Schüpbach, Simon; Vallelonga, Paul; Svensson, Anders (2014). Evaluation of aeolian dust records obtained from Polar Ice Cores. ProScience Conference Proceedings, 1, pp. 266-272. Digilabs S.a.s. 10.14644/dust.2014.044 <http://dx.doi.org/10.14644/dust.2014.044> |
op_relation |
https://boris.unibe.ch/64739/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.14644/dust.2014.044 |
_version_ |
1774718648511889408 |