Acoustic anisotropy of deteriorated soapstone from the Nidaros Cathedral, Trondheim, Norway

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Authors:Holt, Rune M.; Skjaerstein, Anne; Storemyr, Per
Author Affiliations:Primary:
NTH Norwegian Institute of Technology, IKU Petroleum Research, Norway
Volume Title:Special issue; papers presented at the Fifth international workshop on Seismic anisotropy
Volume Authors:Brown, R. J., prefacer; Lawton, D. C.
Source:Canadian Journal of Exploration Geophysics, 29(1), p.266-275; Fifth international workshop on Seismic anisotropy, Banff, AB, Canada, May 17-22, 1992, prefaced by R. J. Brown and D. C. Lawton. Publisher: Canadian Society of Exploration Geophysicists, Calgary, AB, Canada. ISSN: 0844-3432
Publication Date:1993
Note:In English. Includes appendix. 7 refs.; illus.
Summary:Acoustic properties have been studied in order to develop a non- destructive technique for in situ quantification of partial to severe deterioration occurring in the soapstones on the outside of the 13th century Nidaros Cathedral in Trondheim. Measurements show that sound velocities decrease greatly and the amount of anisotropy increases with increasing deterioration, these effects being related to two major orthogonal microcrack sets. In the most deteriorated specimens, a shear-wave anisotropy of 50-100% was found and for a given direction of propagation the faster S wave had a higher velocity than the P wave. The feasibility of acoustic techniques for mapping such deterioration in monuments and buildings has been demonstrated. [R.A.H.]
Subjects:Acoustical properties; Anisotropy; Archaeology; Artifacts; Body waves; Building stone; Buildings; Calibration; Construction materials; Corrosion; Cracks; Degradation; Elastic waves; Experimental studies; Heterogeneity; Homogeneity; Microcracks; P-waves; Preservation; Propagation; S-waves; Seismic waves; Soapstone; Velocity; Europe; Norway; Scandinavia; Sor-Trondelag Norway; Trondheim Norway; Western Europe; Cathedrals; Nidaros Cathedral
Coordinates:N633600 N633600 E0102300 E0102300
Abstract Numbers:94M/3052
Record ID:1995063817
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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