Measurement of acoustic attenuation in South Pole ice

• Published in: Astroparticle Physics
• Main Authors: Abbasi, R., Abdou, Y., Abu-Zayyad, T., Adams, J., Aguilar, J.A., Ahlers, M., Andeen, K., Auffenberg, J., Bai, X., Baker, M., Barwick, S.W., Bay, R., Alba, J.L.B., Beattie, K., Beatty, J.J., Bechet, S., Becker, J.K., Becker, K.H., Benabderrahmane, M.L., Berdermann, J., Berghaus, P., Berley, D., Bernardini, E., Bertrand, D., Besson, D.Z., Bissok, M., Blaufuss, E., Boersma, D.J., Bohm, C., Boser, S., Botner, O., Bradley, L., Braun, J., Buitink, S., Carson, M., Chirkin, D., Christy, B., Clem, J., Clevermann, F., Cohen, S., Colnard, C., Cowen, D.F., D'Agostino, M.V., Danninger, M., Clercq, C. De, Demirors, L., Depaepe, O., Descamps, F., Desiati, P., Vries-Uiterweerd, G. de, DeYoung, T., Diaz-Velez, J.C., Dreyer, J., Dumm, J.P., Duvoort, M.R., Ehrlich, R., Eisch, J., Ellsworth, R.W., Engdegard, O., Euler, S., Evenson, P.A., Fadiran, O., Fazely, A.R., Feusels, T., Filimonov, K., Finley, C., Foerster, M.M., Fox, B.D., Franckowiak, A., Franke, R., Gaisser, T.K., Gallagher, J., Ganugapati, R., Geisler, M., Gerhardt, L., Gladstone, L., Glusenkamp, T., Goldschmidt, A., Goodman, J.A., Grant, D., Griesel, T., Gross, A., Grullon, S., Gunasingha, R.M., Gurtner, M., Gustafsson, L., Ha, C., Hallgren, A., Halzen, F., Han, K., Hanson, K., Helbing, K., Herquet, P., Hickford, S., Hill, G.C., Hoffman, K.D., Homeier, A., Hoshina, K., Hubert, D., Huelsnitz, W., Lafebre, S.J.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 2011
• Subjects: ONCOL 5: Aetiology; screening and detection; Lambda; South Pole; South pole
• Online Access: http://hdl.handle.net/2066/97101; https://repository.ubn.ru.nl//bitstream/handle/2066/97101/97101.pdf; https://doi.org/10.1016/j.astropartphys.2010.10.003

Contains fulltext : 97101.pdf (Author’s version preprint ) (Open Access) Contains fulltext : 97101-1.pdf (Publisher’s version ) (Closed access) 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 alpha = 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 lambda equivalent to 1/alpha of similar to 300 m with 20% uncertainty. No significant depth or frequency dependence has been found. (C) 2010 Elsevier B.V. All rights reserved.