scholarly journals Ultrasonic velocities of opaline rocks undergoing silica diagenesis

1997 ◽  
Vol 24 (16) ◽  
pp. 2039-2042 ◽  
Author(s):  
Caren Chaika ◽  
Jack Dvorkin
Keyword(s):  
Ultrasonic Velocities ◽  
Silica Diagenesis

Silica diagenesis and its effect on interplate seismicity in cold subduction zones

2012 ◽  
Vol 317-318 ◽  
pp. 136-144 ◽  
Author(s):  
Jun Kameda ◽  
Shoko Hina ◽  
Kyoko Kobayashi ◽  
Asuka Yamaguchi ◽  
Yohei Hamada ◽  
...  
Keyword(s):  
Subduction Zones ◽  
Silica Diagenesis ◽  
Interplate Seismicity

ON THE MEASUREMENT OF LONGITUDINAL AND SHEAR ULTRASONIC VELOCITIES

1997 ◽  
Vol 13 (2) ◽  
pp. 121-126 ◽  
Author(s):  
ASHOK KUMAR ◽  
YUDHISTHER KUMAR ◽  
BASANT KUMAR
Keyword(s):  
Ultrasonic Velocities

Density and ultrasonic velocities in fast ionic conducting borate glasses

1999 ◽  
Vol 64 (1) ◽  
pp. 33-38 ◽  
Author(s):  
S Souto ◽  
M Massot ◽  
M Balkanski ◽  
D Royer
Keyword(s):  
Borate Glasses ◽  
Ultrasonic Velocities ◽  
Ionic Conducting

The relation between seismic P‐ and S‐wave velocity dispersion in saturated rocks

Geophysics ◽  
1994 ◽  
Vol 59 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Gary Mavko ◽  
Diane Jizba
Keyword(s):  
Wave Velocity ◽  
Large Scale ◽  
Velocity Dispersion ◽  
Seismic Velocity ◽  
Ultrasonic Velocities ◽  
S Wave ◽  
Local Flow ◽  
Wave Velocities ◽  
Shear Compliance

Seismic velocity dispersionin fluid-saturated rocks appears to be dominated by tow mecahnisms: the large scale mechanism modeled by Biot, and the local flow or squirt mecahnism. The tow mechanisms can be distuinguished by the ratio of P-to S-wave dispersions, or more conbeniently, by the ratio of dynamic bulk to shear compliance dispersions derived from the wave velocities. Our formulation suggests that when local flow denominates, the dispersion of the shear compliance will be approximately 4/15 the dispersion of the compressibility. When the Biot mechanism dominates, the constant of proportionality is much smaller. Our examination of ultrasonic velocities from 40 sandstones and granites shows that most, but not all, of the samples were dominated by local flow dispersion, particularly at effective pressures below 40 MPa.

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