Methanesulfonate in the firn of King George Island, Antarctica
Methanesulfonate was investigated as a potential contributor to the sulfur budget, based on analysis of a firn core from Collins Ice Cap, King George Island, Antarctica (62°10' S, 58°50' W). The anion was found to be present at a mean concentration of 0.17 μeq L-1, with a maximum of 0.73 μ...
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2001
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:ers_facpub-1273 2023-05-15T14:13:30+02:00 Methanesulfonate in the firn of King George Island, Antarctica Han, Jiankang Xie, Zichu Zhang, Xinping Dai, Dongsheng Mayewski, Paul Andrew Twickler, M. S. 2001-12-01T08:00:00Z application/pdf https://digitalcommons.library.umaine.edu/ers_facpub/268 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1273&context=ers_facpub unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/ers_facpub/268 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1273&context=ers_facpub This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). Earth Science Faculty Scholarship Glaciogeology Geochemistry Glaciochemistry Glaciology Cryology Climate Change Earth Sciences Hydrology text 2001 ftmaineuniv 2023-03-12T18:54:40Z Methanesulfonate was investigated as a potential contributor to the sulfur budget, based on analysis of a firn core from Collins Ice Cap, King George Island, Antarctica (62°10' S, 58°50' W). The anion was found to be present at a mean concentration of 0.17 μeq L-1, with a maximum of 0.73 μeq L-1. Dating based on the δ18O profile suggests that the principal peaks of methanesulfonate are associated with snow deposited in summer and autumn. A careful examination of MSA, SO42-and nssSO42- profiles indicates that two of the three peaks in the MSA profile mayresult mainlyfrom migration and relocation of MSA. The mechanism responsible for this might be similar to that for deep cores from other Antarctic glaciers, supporting the migration hypothesis proposed by prior researchers and extending it to near-temperate ice. Due to the post-depositional modification, the main part of the MSA profile of the firn is no longer indicative of the seasonal pattern of MSA in the atmosphere, and the basis for calculation of the MSA/nssSO42- ratio should be changed. The MSA/nssSO42- ratio obtained bya new computation is 0.22, 10% higher than that ignoring the effect of MSA migration. Text Antarc* Antarctic Antarctica Ice cap King George Island The University of Maine: DigitalCommons@UMaine Antarctic King George Island Bya ENVELOPE(12.536,12.536,64.578,64.578) |
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Open Polar |
collection |
The University of Maine: DigitalCommons@UMaine |
op_collection_id |
ftmaineuniv |
language |
unknown |
topic |
Glaciogeology Geochemistry Glaciochemistry Glaciology Cryology Climate Change Earth Sciences Hydrology |
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Glaciogeology Geochemistry Glaciochemistry Glaciology Cryology Climate Change Earth Sciences Hydrology Han, Jiankang Xie, Zichu Zhang, Xinping Dai, Dongsheng Mayewski, Paul Andrew Twickler, M. S. Methanesulfonate in the firn of King George Island, Antarctica |
topic_facet |
Glaciogeology Geochemistry Glaciochemistry Glaciology Cryology Climate Change Earth Sciences Hydrology |
description |
Methanesulfonate was investigated as a potential contributor to the sulfur budget, based on analysis of a firn core from Collins Ice Cap, King George Island, Antarctica (62°10' S, 58°50' W). The anion was found to be present at a mean concentration of 0.17 μeq L-1, with a maximum of 0.73 μeq L-1. Dating based on the δ18O profile suggests that the principal peaks of methanesulfonate are associated with snow deposited in summer and autumn. A careful examination of MSA, SO42-and nssSO42- profiles indicates that two of the three peaks in the MSA profile mayresult mainlyfrom migration and relocation of MSA. The mechanism responsible for this might be similar to that for deep cores from other Antarctic glaciers, supporting the migration hypothesis proposed by prior researchers and extending it to near-temperate ice. Due to the post-depositional modification, the main part of the MSA profile of the firn is no longer indicative of the seasonal pattern of MSA in the atmosphere, and the basis for calculation of the MSA/nssSO42- ratio should be changed. The MSA/nssSO42- ratio obtained bya new computation is 0.22, 10% higher than that ignoring the effect of MSA migration. |
format |
Text |
author |
Han, Jiankang Xie, Zichu Zhang, Xinping Dai, Dongsheng Mayewski, Paul Andrew Twickler, M. S. |
author_facet |
Han, Jiankang Xie, Zichu Zhang, Xinping Dai, Dongsheng Mayewski, Paul Andrew Twickler, M. S. |
author_sort |
Han, Jiankang |
title |
Methanesulfonate in the firn of King George Island, Antarctica |
title_short |
Methanesulfonate in the firn of King George Island, Antarctica |
title_full |
Methanesulfonate in the firn of King George Island, Antarctica |
title_fullStr |
Methanesulfonate in the firn of King George Island, Antarctica |
title_full_unstemmed |
Methanesulfonate in the firn of King George Island, Antarctica |
title_sort |
methanesulfonate in the firn of king george island, antarctica |
publisher |
DigitalCommons@UMaine |
publishDate |
2001 |
url |
https://digitalcommons.library.umaine.edu/ers_facpub/268 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1273&context=ers_facpub |
long_lat |
ENVELOPE(12.536,12.536,64.578,64.578) |
geographic |
Antarctic King George Island Bya |
geographic_facet |
Antarctic King George Island Bya |
genre |
Antarc* Antarctic Antarctica Ice cap King George Island |
genre_facet |
Antarc* Antarctic Antarctica Ice cap King George Island |
op_source |
Earth Science Faculty Scholarship |
op_relation |
https://digitalcommons.library.umaine.edu/ers_facpub/268 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1273&context=ers_facpub |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). |
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1766285967862267904 |