| Anomalous waveforms observed in laboratory-formed gas hydrate-bearing and ice-bearing sediments. | |
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MedLine Citation:
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PMID: 21476628 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Acoustic transmission measurements of compressional, P, and shear, S, wave velocities rely on correctly identifying the P- and S-body wave arrivals in the measured waveform. In cylindrical samples for which the sample is much longer than the acoustic wavelength, these body waves can be obscured by high-amplitude waveform features arriving just after the relatively small-amplitude P-body wave. In this study, a normal mode approach is used to analyze this type of waveform, observed in sediment containing gas hydrate or ice. This analysis extends an existing normal-mode waveform propagation theory by including the effects of the confining medium surrounding the sample, and provides guidelines for estimating S-wave velocities from waveforms containing multiple large-amplitude arrivals. |
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Authors:
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Myung W Lee; William F Waite |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 129 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-04-11 Completed Date: 2011-08-16 Revised Date: 2012-09-18 |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1707-20 Citation Subset: IM |
Affiliation:
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US Geological Survey, Denver Federal Center, Box 25046, MS-939, Denver, Colorado 80225, USA. mlee@usgs.gov |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustics* Gases / chemistry* Geologic Sediments / chemistry* Ice* Methane / chemistry Models, Theoretical* Oceans and Seas Seawater / chemistry Sound Spectrography |
| Grant Support | |
ID/Acronym/Agency:
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DEAI21-92MC29214//PHS HHS |
| Chemical | |
Reg. No./Substance:
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0/Gases; 0/Ice; 74-82-8/Methane |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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