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Measurement of Acoustic Attenuation in South Pole Ice
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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2011 (English)In: Astroparticle physics, ISSN 0927-6505, E-ISSN 1873-2852, Vol. 34, no 6, 382-393 p.Article in journal (Refereed) Published
Abstract [en]

Using the South Pole Acoustic Test Setup (SPATS) and a retrievable transmitter deployed in holes drilled for the IceCube experiment, we have measured the attenuation of acoustic signals by South Pole ice at depths between 190 m and 500 m. Three data sets, using different acoustic sources, have been analyzed and give consistent results. The method with the smallest systematic uncertainties yields an amplitude attenuation coefficient α = 3.20 ± 0.57 km−1 between 10 and 30 kHz, considerably larger than previous theoretical estimates. Expressed as an attenuation length, the analyses give a consistent result for λ ≡ 1/α of ∼300 m with 20% uncertainty. No significant depth or frequency dependence has been found.

Place, publisher, year, edition, pages
2011. Vol. 34, no 6, 382-393 p.
Keyword [en]
Neutrino astronomy, Acoustics; South Pole, Acoustic attenuation, Ice
National Category
Subatomic Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:su:diva-62023DOI: 10.1016/j.astropartphys.2010.10.003ISI: 000287068800008OAI: oai:DiVA.org:su-62023DiVA: diva2:439423
Projects
IceCube
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note
Publikationen har totalt 254 författare, R. Abbasi et al.Available from: 2011-09-07 Created: 2011-09-07 Last updated: 2017-12-08Bibliographically approved

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Bohm, ChristianDanninger, MatthiasFinley, ChadHulth, Per OlofHultqvist, KlasJohansson, HenrikSeo, Seon-HeeWalck, Christian
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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