In situ acoustic attenuation measurements in glacial ice
نویسندگان
چکیده
منابع مشابه
Attenuation of acoustic waves in glacial ice and salt domes
[1] Two classes of natural solid media, glacial ice and salt domes, are under consideration as media in which to deploy instruments for detection of neutrinos with energy 10 eV. Though insensitive to 10 to 10 eV neutrinos for which observatories (e.g., AMANDA and IceCube) that utilize optical Cherenkov radiation detectors are designed, radio and acoustic methods are suited for searches for the ...
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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 yield...
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Monte Carlo simulations are used to establish a weighting function that describes the collection of angular scattering for the WETLabs AC-9 reflecting tube absorption meter. The equivalent weighting function for the AC-9 attenuation sensor is found to be well approximated by a binary step function with photons scattered between zero and the collection half-width angle contributing to the scatte...
متن کاملGlacial Ice Detection
Safe marine navigation in the Arctic is becoming more important with a growing interest in the region in recent years [1]. The United States Geological Survey (USGS) estimates there to be more than 90 billion barrels of undiscovered oil in the arctic [2]. With the summer Arctic sea ice extent having decreased by 50% since 1980 [3], this now opening waterway has given rise to serious interest in...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 1965
ISSN: 0148-0227
DOI: 10.1029/jz070i008p01849