Seasonal Variations of Glaciochemical, Isotopic and Stratigraphic Properties in Siple Dome (Antarctica) Surface Snow
Six snow-pit records recovered from Siple Dome, West Antarctica, during 1994 are used to study seasonal variations in chemical (major ion and H2O2), isotopic (deuterium) and physical stratigraphic properties during the 1988-94 period. Comparison of dD measurements and satellite-derived brightness te...
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1999
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:ers_facpub-1210 2024-09-15T17:40:06+00:00 Seasonal Variations of Glaciochemical, Isotopic and Stratigraphic Properties in Siple Dome (Antarctica) Surface Snow Kreutz, K. J. Mayewski, Paul Andrew Twickler, M. S. Whitlow, S. I. White, J. W.C. Shuman, C. A. Raymond, C. F. Conway, H. McConnell, J. R. 1999-01-01T08:00:00Z application/pdf https://digitalcommons.library.umaine.edu/ers_facpub/205 https://doi.org/10.3189/172756499781821193 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1210/viewcontent/SeasonalVariationsofGlaciochemical.pdf unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/ers_facpub/205 doi:10.3189/172756499781821193 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1210/viewcontent/SeasonalVariationsofGlaciochemical.pdf 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 Glaciology Cryology Climate Change Hydrology text 1999 ftmaineuniv https://doi.org/10.3189/172756499781821193 2024-07-24T05:38:40Z Six snow-pit records recovered from Siple Dome, West Antarctica, during 1994 are used to study seasonal variations in chemical (major ion and H2O2), isotopic (deuterium) and physical stratigraphic properties during the 1988-94 period. Comparison of dD measurements and satellite-derived brightness temperature for the Siple Dome area suggests that most seasonal dD maxima occur within ±4 weeks of each 1 January. Several other chemical species (H2O2, non-sea-salt (nss) SO42-, methanesulfonic acid and NO3-) show coeval peaks with dD, together providing an accurate method for identifying summer accumulation. Sea-salt-derived species generally peak during winter/spring, but episodic input is noted throughout some years. No reliable seasonal signal is identified in species with continental sources (nssCa2+, nssMg2+), NH4+ or nssCl-. Visible strata such as large depth-hoar layers (>5 cm) are associated with summer accumulation and its metamorphosis, but smaller hoar layers and crusts are more difficult to interpret. A multi-parameter approach is found to provide the most accurate dating of these snow-pit records, and is used to determine annual layer thicknesses at each site. Significant spatial accumulation variability exists on an annual basis, but mean accumulation in the sampled 10 km2 grid for the 1988-94 period is fairly uniform. Text Antarc* Antarctica West Antarctica The University of Maine: DigitalCommons@UMaine Annals of Glaciology 29 38 44 |
institution |
Open Polar |
collection |
The University of Maine: DigitalCommons@UMaine |
op_collection_id |
ftmaineuniv |
language |
unknown |
topic |
Glaciogeology Geochemistry Glaciology Cryology Climate Change Hydrology |
spellingShingle |
Glaciogeology Geochemistry Glaciology Cryology Climate Change Hydrology Kreutz, K. J. Mayewski, Paul Andrew Twickler, M. S. Whitlow, S. I. White, J. W.C. Shuman, C. A. Raymond, C. F. Conway, H. McConnell, J. R. Seasonal Variations of Glaciochemical, Isotopic and Stratigraphic Properties in Siple Dome (Antarctica) Surface Snow |
topic_facet |
Glaciogeology Geochemistry Glaciology Cryology Climate Change Hydrology |
description |
Six snow-pit records recovered from Siple Dome, West Antarctica, during 1994 are used to study seasonal variations in chemical (major ion and H2O2), isotopic (deuterium) and physical stratigraphic properties during the 1988-94 period. Comparison of dD measurements and satellite-derived brightness temperature for the Siple Dome area suggests that most seasonal dD maxima occur within ±4 weeks of each 1 January. Several other chemical species (H2O2, non-sea-salt (nss) SO42-, methanesulfonic acid and NO3-) show coeval peaks with dD, together providing an accurate method for identifying summer accumulation. Sea-salt-derived species generally peak during winter/spring, but episodic input is noted throughout some years. No reliable seasonal signal is identified in species with continental sources (nssCa2+, nssMg2+), NH4+ or nssCl-. Visible strata such as large depth-hoar layers (>5 cm) are associated with summer accumulation and its metamorphosis, but smaller hoar layers and crusts are more difficult to interpret. A multi-parameter approach is found to provide the most accurate dating of these snow-pit records, and is used to determine annual layer thicknesses at each site. Significant spatial accumulation variability exists on an annual basis, but mean accumulation in the sampled 10 km2 grid for the 1988-94 period is fairly uniform. |
format |
Text |
author |
Kreutz, K. J. Mayewski, Paul Andrew Twickler, M. S. Whitlow, S. I. White, J. W.C. Shuman, C. A. Raymond, C. F. Conway, H. McConnell, J. R. |
author_facet |
Kreutz, K. J. Mayewski, Paul Andrew Twickler, M. S. Whitlow, S. I. White, J. W.C. Shuman, C. A. Raymond, C. F. Conway, H. McConnell, J. R. |
author_sort |
Kreutz, K. J. |
title |
Seasonal Variations of Glaciochemical, Isotopic and Stratigraphic Properties in Siple Dome (Antarctica) Surface Snow |
title_short |
Seasonal Variations of Glaciochemical, Isotopic and Stratigraphic Properties in Siple Dome (Antarctica) Surface Snow |
title_full |
Seasonal Variations of Glaciochemical, Isotopic and Stratigraphic Properties in Siple Dome (Antarctica) Surface Snow |
title_fullStr |
Seasonal Variations of Glaciochemical, Isotopic and Stratigraphic Properties in Siple Dome (Antarctica) Surface Snow |
title_full_unstemmed |
Seasonal Variations of Glaciochemical, Isotopic and Stratigraphic Properties in Siple Dome (Antarctica) Surface Snow |
title_sort |
seasonal variations of glaciochemical, isotopic and stratigraphic properties in siple dome (antarctica) surface snow |
publisher |
DigitalCommons@UMaine |
publishDate |
1999 |
url |
https://digitalcommons.library.umaine.edu/ers_facpub/205 https://doi.org/10.3189/172756499781821193 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1210/viewcontent/SeasonalVariationsofGlaciochemical.pdf |
genre |
Antarc* Antarctica West Antarctica |
genre_facet |
Antarc* Antarctica West Antarctica |
op_source |
Earth Science Faculty Scholarship |
op_relation |
https://digitalcommons.library.umaine.edu/ers_facpub/205 doi:10.3189/172756499781821193 https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1210/viewcontent/SeasonalVariationsofGlaciochemical.pdf |
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). |
op_doi |
https://doi.org/10.3189/172756499781821193 |
container_title |
Annals of Glaciology |
container_volume |
29 |
container_start_page |
38 |
op_container_end_page |
44 |
_version_ |
1810484714434199552 |