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South Pole glacial climate reconstruction from multi-borehole laser particulate stratigraphy
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
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2013 (English)In: Journal of Glaciology, ISSN 0022-1430, E-ISSN 1727-5652, Vol. 59, no 218, 1117-1128 p.Article in journal (Refereed) Published
Abstract [en]

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 similar to 74 ka recently isolated with radiometric dating to bracket the Toba (Sumatra) supereruption.

Place, publisher, year, edition, pages
2013. Vol. 59, no 218, 1117-1128 p.
National Category
Physical Sciences Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-100128DOI: 10.3189/2013JoG13J068ISI: 000329013700011OAI: oai:DiVA.org:su-100128DiVA: diva2:691217
Note

AuthorCount:285;

Available from: 2014-01-27 Created: 2014-01-27 Last updated: 2017-12-06Bibliographically approved

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Bohm, ChristianDanninger, MatthiasFinley, ChadFlis, SamuelHulth, Per OlofHultqvist, KlasWalck, ChristianWolf, MartinZoll, Marcel
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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