Glaciological and climatic significance of Hercules Dome, Antarctica – an optimal site for deep ice core drilling
Antarctica (86°S, 105°W), which demonstrate its potential as a deep ice core site. Annual layering in dD ratios from a 72 m ice core collected by the US-ITASE 2002 traverse indicate accumulation rates of 0.16–0.20 m/yr ice equivalent over the last 300 years. Age control from stratigraphy seen in the...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.366.8188 2023-05-15T13:56:12+02:00 Glaciological and climatic significance of Hercules Dome, Antarctica – an optimal site for deep ice core drilling Robert W. Jacobel Brian C. Welch Eric J. Steig David P. Schneider The Pennsylvania State University CiteSeerX Archives 2005 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.366.8188 http://www.stolaf.edu/other/cegsic/publications/JGR_2005/jacobel_welch_steig_schneider_JGR.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.366.8188 http://www.stolaf.edu/other/cegsic/publications/JGR_2005/jacobel_welch_steig_schneider_JGR.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.stolaf.edu/other/cegsic/publications/JGR_2005/jacobel_welch_steig_schneider_JGR.pdf text 2005 ftciteseerx 2016-01-08T01:05:11Z Antarctica (86°S, 105°W), which demonstrate its potential as a deep ice core site. Annual layering in dD ratios from a 72 m ice core collected by the US-ITASE 2002 traverse indicate accumulation rates of 0.16–0.20 m/yr ice equivalent over the last 300 years. Age control from stratigraphy seen in the radio-echo sounding data collected during the same traverse suggests a rate of 0.09–0.11 m/yr averaged over the past 18,000 years. Ice stratigraphy also indicates that the ice divide position has been stable through at least this period. Comparison of satellite-derived temperature anomalies with atmospheric reanalysis data show that the site is sensitive to the two dominant patterns of climate variability in the high-latitude Southern Hemisphere. Climate proxy data from a deep ice core at Hercules Dome would be indicative of changes in Pacific Southern Hemisphere climate variability and may provide new information on rapid climate change events in Antarctica. The sensitivity of the site and the combination of relatively high accumulation rates, low temperatures (mean annual 35°C to 40°C), and simple ice flow suggest that Hercules Dome is an ideal site for a future deep ice core. Text Antarc* Antarctica ice core Unknown Pacific Hercules ENVELOPE(161.450,161.450,-77.483,-77.483) Hercules Dome ENVELOPE(-105.000,-105.000,-86.000,-86.000) |
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Open Polar |
collection |
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ftciteseerx |
language |
English |
description |
Antarctica (86°S, 105°W), which demonstrate its potential as a deep ice core site. Annual layering in dD ratios from a 72 m ice core collected by the US-ITASE 2002 traverse indicate accumulation rates of 0.16–0.20 m/yr ice equivalent over the last 300 years. Age control from stratigraphy seen in the radio-echo sounding data collected during the same traverse suggests a rate of 0.09–0.11 m/yr averaged over the past 18,000 years. Ice stratigraphy also indicates that the ice divide position has been stable through at least this period. Comparison of satellite-derived temperature anomalies with atmospheric reanalysis data show that the site is sensitive to the two dominant patterns of climate variability in the high-latitude Southern Hemisphere. Climate proxy data from a deep ice core at Hercules Dome would be indicative of changes in Pacific Southern Hemisphere climate variability and may provide new information on rapid climate change events in Antarctica. The sensitivity of the site and the combination of relatively high accumulation rates, low temperatures (mean annual 35°C to 40°C), and simple ice flow suggest that Hercules Dome is an ideal site for a future deep ice core. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Robert W. Jacobel Brian C. Welch Eric J. Steig David P. Schneider |
spellingShingle |
Robert W. Jacobel Brian C. Welch Eric J. Steig David P. Schneider Glaciological and climatic significance of Hercules Dome, Antarctica – an optimal site for deep ice core drilling |
author_facet |
Robert W. Jacobel Brian C. Welch Eric J. Steig David P. Schneider |
author_sort |
Robert W. Jacobel |
title |
Glaciological and climatic significance of Hercules Dome, Antarctica – an optimal site for deep ice core drilling |
title_short |
Glaciological and climatic significance of Hercules Dome, Antarctica – an optimal site for deep ice core drilling |
title_full |
Glaciological and climatic significance of Hercules Dome, Antarctica – an optimal site for deep ice core drilling |
title_fullStr |
Glaciological and climatic significance of Hercules Dome, Antarctica – an optimal site for deep ice core drilling |
title_full_unstemmed |
Glaciological and climatic significance of Hercules Dome, Antarctica – an optimal site for deep ice core drilling |
title_sort |
glaciological and climatic significance of hercules dome, antarctica – an optimal site for deep ice core drilling |
publishDate |
2005 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.366.8188 http://www.stolaf.edu/other/cegsic/publications/JGR_2005/jacobel_welch_steig_schneider_JGR.pdf |
long_lat |
ENVELOPE(161.450,161.450,-77.483,-77.483) ENVELOPE(-105.000,-105.000,-86.000,-86.000) |
geographic |
Pacific Hercules Hercules Dome |
geographic_facet |
Pacific Hercules Hercules Dome |
genre |
Antarc* Antarctica ice core |
genre_facet |
Antarc* Antarctica ice core |
op_source |
http://www.stolaf.edu/other/cegsic/publications/JGR_2005/jacobel_welch_steig_schneider_JGR.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.366.8188 http://www.stolaf.edu/other/cegsic/publications/JGR_2005/jacobel_welch_steig_schneider_JGR.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766263567601893376 |