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Title: Crack spectra analysis

Crack spectra derived from velocity data have been shown to exhibit systematics which reflect microstructural and textural differences between samples (Warren and Tiernan, 1980). Further research into both properties and information content of crack spectra have yielded the following: Spectral features are reproducible even at low pressures; certain observed spectral features may correspond to non-in-situ crack populations created during sample retrieval; the functional form of a crack spectra may be diagnostic of the sample's grain texture; hysteresis is observed in crack spectra between up and down pressure runs - it may be due to friction between the faces of closed crack populations.
Authors:
Publication Date:
OSTI Identifier:
6879240
Report Number(s):
DOE/ER/70224-T4
DOE Contract Number:
AT03-76ER70224
Resource Type:
Technical Report
Research Org:
California Univ., Los Angeles (USA)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; CRACKS; SPECTRA; ROCKS; PHYSICAL PROPERTIES; EXPERIMENTAL DATA; HYSTERESIS; DATA; INFORMATION; NUMERICAL DATA 580300* -- Mineralogy, Petrology, & Rock Mechanics-- (-1989)