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Type: Journal article
Title: South Pole glacial climate reconstruction from multi-borehole laser particulate stratigraphy
Author: Aartsen, M.
Hill, G.
IceCube Collaboration
Citation: Journal of Glaciology, 2013; 59(218):1117-1128
Publisher: International Glaciological Society
Issue Date: 2013
ISSN: 0022-1430
Statement of
The IceCube Collaboration
Abstract: 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.
Description: M.G. Aartsen and G.C. Hill are members of the IceCube Collaboration
Rights: © 2014 Publishing Technology
DOI: 10.3189/2013JoG13J068
Grant ID: ARC
Appears in Collections:Aurora harvest 3
Physics publications

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