Mechanisms of attenuation of acoustic waves in antarctic ice
To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain bou...
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| Autor*in: |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1993 |
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| Reproduktion: |
Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 |
|---|---|
| Übergeordnetes Werk: |
in: Nuclear Instruments and Methods in Physics Research Section A: - Amsterdam : Elsevier, 325(1993), 1-2, Seite 346-356 |
| Übergeordnetes Werk: |
volume:325 ; year:1993 ; number:1-2 ; pages:346-356 |
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| 520 | |a To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. | ||
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(DE-627)NLEJ180914049 (DE-599)GBVNLZ180914049 DE-627 ger DE-627 rakwb eng Mechanisms of attenuation of acoustic waves in antarctic ice 1993 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Price, P.B. oth in Nuclear Instruments and Methods in Physics Research Section A: Amsterdam : Elsevier 325(1993), 1-2, Seite 346-356 (DE-627)NLEJ180854372 (DE-600)1466532-3 0168-9002 nnns volume:325 year:1993 number:1-2 pages:346-356 http://linkinghub.elsevier.com/retrieve/pii/0168-9002(93)91037-N GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 325 1993 1-2 346-356 |
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(DE-627)NLEJ180914049 (DE-599)GBVNLZ180914049 DE-627 ger DE-627 rakwb eng Mechanisms of attenuation of acoustic waves in antarctic ice 1993 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Price, P.B. oth in Nuclear Instruments and Methods in Physics Research Section A: Amsterdam : Elsevier 325(1993), 1-2, Seite 346-356 (DE-627)NLEJ180854372 (DE-600)1466532-3 0168-9002 nnns volume:325 year:1993 number:1-2 pages:346-356 http://linkinghub.elsevier.com/retrieve/pii/0168-9002(93)91037-N GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 325 1993 1-2 346-356 |
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(DE-627)NLEJ180914049 (DE-599)GBVNLZ180914049 DE-627 ger DE-627 rakwb eng Mechanisms of attenuation of acoustic waves in antarctic ice 1993 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Price, P.B. oth in Nuclear Instruments and Methods in Physics Research Section A: Amsterdam : Elsevier 325(1993), 1-2, Seite 346-356 (DE-627)NLEJ180854372 (DE-600)1466532-3 0168-9002 nnns volume:325 year:1993 number:1-2 pages:346-356 http://linkinghub.elsevier.com/retrieve/pii/0168-9002(93)91037-N GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 325 1993 1-2 346-356 |
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(DE-627)NLEJ180914049 (DE-599)GBVNLZ180914049 DE-627 ger DE-627 rakwb eng Mechanisms of attenuation of acoustic waves in antarctic ice 1993 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Price, P.B. oth in Nuclear Instruments and Methods in Physics Research Section A: Amsterdam : Elsevier 325(1993), 1-2, Seite 346-356 (DE-627)NLEJ180854372 (DE-600)1466532-3 0168-9002 nnns volume:325 year:1993 number:1-2 pages:346-356 http://linkinghub.elsevier.com/retrieve/pii/0168-9002(93)91037-N GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 325 1993 1-2 346-356 |
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(DE-627)NLEJ180914049 (DE-599)GBVNLZ180914049 DE-627 ger DE-627 rakwb eng Mechanisms of attenuation of acoustic waves in antarctic ice 1993 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Price, P.B. oth in Nuclear Instruments and Methods in Physics Research Section A: Amsterdam : Elsevier 325(1993), 1-2, Seite 346-356 (DE-627)NLEJ180854372 (DE-600)1466532-3 0168-9002 nnns volume:325 year:1993 number:1-2 pages:346-356 http://linkinghub.elsevier.com/retrieve/pii/0168-9002(93)91037-N GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 325 1993 1-2 346-356 |
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Mechanisms of attenuation of acoustic waves in antarctic ice |
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To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. |
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To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. |
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To guide in the design of an array of acoustic detectors of ultrahigh-energy neutrino interactions leading to electromagnetic cascades in the antarctic ice, estimates of acoustic wave attenuation in the frequency regime 1 to 100 kHz are made. The mechanisms are scattering and reflection at grain boundaries and energy loss due to internal friction. For South Pole ice at -55^oC, internal friction is mainly due to proton reorientation and is small enough to permit acoustic waves at all frequencies of interest to propagate through more than 10^2 m. At frequencies above ~ 20 kHz the attenuation is mainly due to Rayleigh scattering at grain boundaries. For a mean crystal radius of 0.1 cm at 1 km depth, estimated from available data, it is concluded that, even for a random distribution of c-axes, acoustic waves throughout the frequency regime of interest will lose less than ~ 1 dB per 100 m at -55^oC. Dispersion of arrival time and energy of the acoustic wavefront due to attenuation will not degrade the ability to measure the direction and energy of the cascade. |
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