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Seismic attenuation in artificial glass cracks: Physical and physicochemical effects of fluids
Author(s) -
Moerig R.,
Waite W. F.,
Boyd O. S.,
Getting I. C.,
Spetzler H. A.
Publication year - 1996
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/96gl02147
Subject(s) - attenuation , materials science , wetting , wedge (geometry) , stiffness , fluid dynamics , composite material , modulus , geology , mechanics , mineralogy , optics , physics
Attenuation and stiffness of artificial, fluid containing cracks are measured from 3 mHz to 10 Hz. The cracks are wedge‐shaped; made from glass microscope slides. To explain the frequency dependence of both the attenuation and the stiffness (akin to a modulus), we need to appeal to well known fluid flow mechanisms and to the physicochemical interaction between the fluid and crack surface. By altering the wettability of the crack surfaces, surfactants change the mobility of water and thereby change the frequency dependence of the fluid flow effects by several orders of magnitude.