Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier
New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5–4 transition, a period of global cooling and ice sheet expansion. We determine chronologies for the ice and air bubbles in the new ice cores by visually matching v...
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ftcopernicus:oai:publications.copernicus.org:cp68727 2023-05-15T13:55:28+02:00 Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier Menking, James A. Brook, Edward J. Shackleton, Sarah A. Severinghaus, Jeffrey P. Dyonisius, Michael N. Petrenko, Vasilii McConnell, Joseph R. Rhodes, Rachael H. Bauska, Thomas K. Baggenstos, Daniel Marcott, Shaun Barker, Stephen 2019-08-08 application/pdf https://doi.org/10.5194/cp-15-1537-2019 https://cp.copernicus.org/articles/15/1537/2019/ eng eng doi:10.5194/cp-15-1537-2019 https://cp.copernicus.org/articles/15/1537/2019/ eISSN: 1814-9332 Text 2019 ftcopernicus https://doi.org/10.5194/cp-15-1537-2019 2020-07-20T16:22:43Z New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5–4 transition, a period of global cooling and ice sheet expansion. We determine chronologies for the ice and air bubbles in the new ice cores by visually matching variations in gas- and ice-phase tracers to preexisting ice core records. The chronologies reveal an ice age–gas age difference ( Δ age) approaching 10 ka during MIS 4, implying very low snow accumulation in the Taylor Glacier accumulation zone. A revised chronology for the analogous section of the Taylor Dome ice core (84 to 55 ka), located to the south of the Taylor Glacier accumulation zone, shows that Δ age did not exceed 3 ka. The difference in Δ age between the two records during MIS 4 is similar in magnitude but opposite in direction to what is observed at the Last Glacial Maximum. This relationship implies that a spatial gradient in snow accumulation existed across the Taylor Dome region during MIS 4 that was oriented in the opposite direction of the accumulation gradient during the Last Glacial Maximum. Text Antarc* Antarctica ice core Ice Sheet Taylor Glacier Copernicus Publications: E-Journals Taylor Dome ENVELOPE(157.667,157.667,-77.667,-77.667) Taylor Glacier ENVELOPE(162.167,162.167,-77.733,-77.733) Climate of the Past 15 4 1537 1556 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5–4 transition, a period of global cooling and ice sheet expansion. We determine chronologies for the ice and air bubbles in the new ice cores by visually matching variations in gas- and ice-phase tracers to preexisting ice core records. The chronologies reveal an ice age–gas age difference ( Δ age) approaching 10 ka during MIS 4, implying very low snow accumulation in the Taylor Glacier accumulation zone. A revised chronology for the analogous section of the Taylor Dome ice core (84 to 55 ka), located to the south of the Taylor Glacier accumulation zone, shows that Δ age did not exceed 3 ka. The difference in Δ age between the two records during MIS 4 is similar in magnitude but opposite in direction to what is observed at the Last Glacial Maximum. This relationship implies that a spatial gradient in snow accumulation existed across the Taylor Dome region during MIS 4 that was oriented in the opposite direction of the accumulation gradient during the Last Glacial Maximum. |
format |
Text |
author |
Menking, James A. Brook, Edward J. Shackleton, Sarah A. Severinghaus, Jeffrey P. Dyonisius, Michael N. Petrenko, Vasilii McConnell, Joseph R. Rhodes, Rachael H. Bauska, Thomas K. Baggenstos, Daniel Marcott, Shaun Barker, Stephen |
spellingShingle |
Menking, James A. Brook, Edward J. Shackleton, Sarah A. Severinghaus, Jeffrey P. Dyonisius, Michael N. Petrenko, Vasilii McConnell, Joseph R. Rhodes, Rachael H. Bauska, Thomas K. Baggenstos, Daniel Marcott, Shaun Barker, Stephen Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier |
author_facet |
Menking, James A. Brook, Edward J. Shackleton, Sarah A. Severinghaus, Jeffrey P. Dyonisius, Michael N. Petrenko, Vasilii McConnell, Joseph R. Rhodes, Rachael H. Bauska, Thomas K. Baggenstos, Daniel Marcott, Shaun Barker, Stephen |
author_sort |
Menking, James A. |
title |
Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier |
title_short |
Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier |
title_full |
Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier |
title_fullStr |
Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier |
title_full_unstemmed |
Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier |
title_sort |
spatial pattern of accumulation at taylor dome during marine isotope stage 4: stratigraphic constraints from taylor glacier |
publishDate |
2019 |
url |
https://doi.org/10.5194/cp-15-1537-2019 https://cp.copernicus.org/articles/15/1537/2019/ |
long_lat |
ENVELOPE(157.667,157.667,-77.667,-77.667) ENVELOPE(162.167,162.167,-77.733,-77.733) |
geographic |
Taylor Dome Taylor Glacier |
geographic_facet |
Taylor Dome Taylor Glacier |
genre |
Antarc* Antarctica ice core Ice Sheet Taylor Glacier |
genre_facet |
Antarc* Antarctica ice core Ice Sheet Taylor Glacier |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-15-1537-2019 https://cp.copernicus.org/articles/15/1537/2019/ |
op_doi |
https://doi.org/10.5194/cp-15-1537-2019 |
container_title |
Climate of the Past |
container_volume |
15 |
container_issue |
4 |
container_start_page |
1537 |
op_container_end_page |
1556 |
_version_ |
1766262110244831232 |