A comparison of annual layer thickness model estimates with observational measurements using the Berkner Island ice core, Antarctica
Abstract A model to estimate the annual layer thickness of deposited snowfall at a deep ice core site, compacted by vertical strain with respect to depth, is assessed using ultra-high-resolution laboratory analytical techniques. A recently established technique of high-resolution direct chemical ana...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/s0954102017000025 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000025 |
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crcambridgeupr:10.1017/s0954102017000025 2024-03-03T08:38:32+00:00 A comparison of annual layer thickness model estimates with observational measurements using the Berkner Island ice core, Antarctica Massam, A. Sneed, S.B. Lee, G.P. Tuckwell, R.R. Mulvaney, R. Mayewski, P.A. Whitehouse, P.L. 2017 http://dx.doi.org/10.1017/s0954102017000025 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000025 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 29, issue 4, page 382-393 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2017 crcambridgeupr https://doi.org/10.1017/s0954102017000025 2024-02-08T08:29:26Z Abstract A model to estimate the annual layer thickness of deposited snowfall at a deep ice core site, compacted by vertical strain with respect to depth, is assessed using ultra-high-resolution laboratory analytical techniques. A recently established technique of high-resolution direct chemical analysis of ice using ultra-violet laser ablation inductively-coupled plasma mass spectrometry (LA ICP-MS) has been applied to ice from the Berkner Island ice core, and compared with results from lower resolution techniques conducted on parallel sections of ice. The results from both techniques have been analysed in order to assess the capability of each technique to recover seasonal cycles from deep Antarctic ice. Results do not agree with the annual layer thickness estimates from the age–depth model for individual samples <1 m long as the model cannot reconstruct the natural variability present in annual accumulation. However, when compared with sections >4 m long, the deviation between the modelled and observational layer thicknesses is minimized to within two standard deviations. This confirms that the model is capable of successfully estimating mean annual layer thicknesses around analysed sections. Furthermore, our results confirm that the LA ICP-MS technique can reliably recover seasonal chemical profiles beyond standard analytical resolution. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Berkner Island ice core Cambridge University Press Antarctic Berkner Island ENVELOPE(-48.117,-48.117,-79.333,-79.333) Antarctic Science 29 4 382 393 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Massam, A. Sneed, S.B. Lee, G.P. Tuckwell, R.R. Mulvaney, R. Mayewski, P.A. Whitehouse, P.L. A comparison of annual layer thickness model estimates with observational measurements using the Berkner Island ice core, Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract A model to estimate the annual layer thickness of deposited snowfall at a deep ice core site, compacted by vertical strain with respect to depth, is assessed using ultra-high-resolution laboratory analytical techniques. A recently established technique of high-resolution direct chemical analysis of ice using ultra-violet laser ablation inductively-coupled plasma mass spectrometry (LA ICP-MS) has been applied to ice from the Berkner Island ice core, and compared with results from lower resolution techniques conducted on parallel sections of ice. The results from both techniques have been analysed in order to assess the capability of each technique to recover seasonal cycles from deep Antarctic ice. Results do not agree with the annual layer thickness estimates from the age–depth model for individual samples <1 m long as the model cannot reconstruct the natural variability present in annual accumulation. However, when compared with sections >4 m long, the deviation between the modelled and observational layer thicknesses is minimized to within two standard deviations. This confirms that the model is capable of successfully estimating mean annual layer thicknesses around analysed sections. Furthermore, our results confirm that the LA ICP-MS technique can reliably recover seasonal chemical profiles beyond standard analytical resolution. |
format |
Article in Journal/Newspaper |
author |
Massam, A. Sneed, S.B. Lee, G.P. Tuckwell, R.R. Mulvaney, R. Mayewski, P.A. Whitehouse, P.L. |
author_facet |
Massam, A. Sneed, S.B. Lee, G.P. Tuckwell, R.R. Mulvaney, R. Mayewski, P.A. Whitehouse, P.L. |
author_sort |
Massam, A. |
title |
A comparison of annual layer thickness model estimates with observational measurements using the Berkner Island ice core, Antarctica |
title_short |
A comparison of annual layer thickness model estimates with observational measurements using the Berkner Island ice core, Antarctica |
title_full |
A comparison of annual layer thickness model estimates with observational measurements using the Berkner Island ice core, Antarctica |
title_fullStr |
A comparison of annual layer thickness model estimates with observational measurements using the Berkner Island ice core, Antarctica |
title_full_unstemmed |
A comparison of annual layer thickness model estimates with observational measurements using the Berkner Island ice core, Antarctica |
title_sort |
comparison of annual layer thickness model estimates with observational measurements using the berkner island ice core, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1017/s0954102017000025 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102017000025 |
long_lat |
ENVELOPE(-48.117,-48.117,-79.333,-79.333) |
geographic |
Antarctic Berkner Island |
geographic_facet |
Antarctic Berkner Island |
genre |
Antarc* Antarctic Antarctic Science Antarctica Berkner Island ice core |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Berkner Island ice core |
op_source |
Antarctic Science volume 29, issue 4, page 382-393 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102017000025 |
container_title |
Antarctic Science |
container_volume |
29 |
container_issue |
4 |
container_start_page |
382 |
op_container_end_page |
393 |
_version_ |
1792506938957758464 |