South Pole Glacial Climate Reconstruction from Multi-borehole Laser Particulate Stratigraphy
The IceCube Neutrino Observatory and its prototype, AMANDA, were built in South Pole ice, using powerful hot-water drills to cleanly bore >100 holes to depths up to 2500 m. The construction of these particle physics detectors provided a unique opportunity to examine the deep ice sheet using a var...
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ftunivalabama:oai:ir.ua.edu:123456789/5907 2023-05-15T13:56:41+02:00 South Pole Glacial Climate Reconstruction from Multi-borehole Laser Particulate Stratigraphy Santander, Marcos 2017-07-10 http://ir.ua.edu/handle/123456789/5907 English eng http://ir.ua.edu/handle/123456789/5907 text 2017 ftunivalabama 2023-01-07T16:41:25Z The IceCube Neutrino Observatory and its prototype, AMANDA, were built in South Pole ice, using powerful hot-water drills to cleanly bore >100 holes to depths up to 2500 m. The construction of these particle physics detectors provided a unique opportunity to examine the deep ice sheet using a variety of novel techniques. We made high-resolution particulate profiles with a laser dust logger in eight of the boreholes during detector commissioning between 2004 and 2010. The South Pole laser logs are among the most clearly resolved measurements of Antarctic dust strata during the last glacial period and can be used to reconstruct paleoclimate records in exceptional detail. Here we use manual and algorithmic matching to synthesize our South Pole measurements with ice-core and logging data from Dome C, East Antarctica. We derive impurity concentration, precision chronology, annual-layer thickness, local spatial variability, and identify several widespread volcanic ash depositions useful for dating. We also examine the interval around ∼74 ka recently isolated with radiometric dating to bracket the Toba (Sumatra) supereruption. Text Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South pole South pole University of Alabama Institutional Repository Antarctic East Antarctica South Pole |
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University of Alabama Institutional Repository |
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ftunivalabama |
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English |
description |
The IceCube Neutrino Observatory and its prototype, AMANDA, were built in South Pole ice, using powerful hot-water drills to cleanly bore >100 holes to depths up to 2500 m. The construction of these particle physics detectors provided a unique opportunity to examine the deep ice sheet using a variety of novel techniques. We made high-resolution particulate profiles with a laser dust logger in eight of the boreholes during detector commissioning between 2004 and 2010. The South Pole laser logs are among the most clearly resolved measurements of Antarctic dust strata during the last glacial period and can be used to reconstruct paleoclimate records in exceptional detail. Here we use manual and algorithmic matching to synthesize our South Pole measurements with ice-core and logging data from Dome C, East Antarctica. We derive impurity concentration, precision chronology, annual-layer thickness, local spatial variability, and identify several widespread volcanic ash depositions useful for dating. We also examine the interval around ∼74 ka recently isolated with radiometric dating to bracket the Toba (Sumatra) supereruption. |
format |
Text |
author |
Santander, Marcos |
spellingShingle |
Santander, Marcos South Pole Glacial Climate Reconstruction from Multi-borehole Laser Particulate Stratigraphy |
author_facet |
Santander, Marcos |
author_sort |
Santander, Marcos |
title |
South Pole Glacial Climate Reconstruction from Multi-borehole Laser Particulate Stratigraphy |
title_short |
South Pole Glacial Climate Reconstruction from Multi-borehole Laser Particulate Stratigraphy |
title_full |
South Pole Glacial Climate Reconstruction from Multi-borehole Laser Particulate Stratigraphy |
title_fullStr |
South Pole Glacial Climate Reconstruction from Multi-borehole Laser Particulate Stratigraphy |
title_full_unstemmed |
South Pole Glacial Climate Reconstruction from Multi-borehole Laser Particulate Stratigraphy |
title_sort |
south pole glacial climate reconstruction from multi-borehole laser particulate stratigraphy |
publishDate |
2017 |
url |
http://ir.ua.edu/handle/123456789/5907 |
geographic |
Antarctic East Antarctica South Pole |
geographic_facet |
Antarctic East Antarctica South Pole |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet South pole South pole |
op_relation |
http://ir.ua.edu/handle/123456789/5907 |
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1766264262577094656 |