par Aguilar Sanchez, Juan Antonio 
;Bechet, Sabrina ;Bertrand, Daniel ;Labare, Mathieu ;Petrovic, Jéléna ;Swillens, Quentin ; [et al.]
Référence Astroparticle physics, 34, page (382-393)
Publication Publié, 2011
;Bechet, Sabrina ;Bertrand, Daniel ;Labare, Mathieu ;Petrovic, Jéléna ;Swillens, Quentin ; [et al.]Référence Astroparticle physics, 34, page (382-393)
Publication Publié, 2011
Article révisé par les pairs
| Résumé : | 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. © 2010 Elsevier B.V. All rights reserved. |
