NDLI: Relationships between compressional-wave and shear-wave velocities in elastic silicate rocks

Content Provider	Semantic Scholar
Author	Castagna, J. P. Batzle, Michael Lee Eastwood, Rachel L.
Copyright Year	2001
Abstract	New velocity data in addition to literature data derived from sonic log, seismic, and laboratory measurements are analyzed for elastic silicate rocks. These data demonstrate simple systematic relationships between compressional and shear wave velocities. For water-saturated elastic silicate rocks, shear wave velocity is approximately linearly related to compressional wave velocity and the compressional-to-shear velocity ratio decreases with increasing compressional velocity. Laboratory data for dry sandstones indicate a nearly constant compressional-to-shear velocity ratio with rigidity approximately equal to bulk modulus. Ideal models for regular packings of spheres and cracked solids exhibit behavior similar to the observed watersaturated and dry trends. For dry rigidity equal to dry bulk modulus, Gassmann’s equations predict velocities in close agreement with data from the water-saturated rock.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.ipt.ntnu.no/pyrex/stash/GPY00571.pdf
Language	English
Access Restriction	Open
Subject Keyword	Amazon Elastic Block Store Approximation Modulus robot Muscle Rigidity Silicates Velocity (software development) solid substance
Content Type	Text
Resource Type	Article

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