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Laboratory Measurements of Compressional and Shear Wave Speeds through Methane Hydrate
Author(s) -
WAITE WILLIAM F.,
HELGERUD MICHAEL B.,
NUR AMOS,
PINKSTON JOHN C.,
STERN LAURA A.,
KIRBY STEPHEN H.,
DURHAM WILLIAM B.
Publication year - 2000
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2000.tb06855.x
Subject(s) - methane , longitudinal wave , shear (geology) , porosity , hydrate , clathrate hydrate , shear waves , wave speed , poisson's ratio , mineralogy , materials science , composite material , wave propagation , mechanics , geology , poisson distribution , chemistry , optics , physics , mathematics , statistics , organic chemistry
A bstract : Simultaneous measurements of compressional and shear wave speeds through polycrystalline methane hydrate have been made. Methane hydrate, grown directly in a wave speed measurement chamber, was uniaxially compacted to a final porosity below 2%. At 277 K, the compacted material had a compressional wave speed of 3,650 ± 50 m/s. The shear wave speed, measured simultaneously, was 1,890 ± 30 m/s. From these wave speed measurements, we derive V p / V s , Poisson's ratio, bulk, shear, and Young's moduli.