Physics
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.2933w&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 24, p. 2933-2936
Physics
29
Mathematical Models, Propagation Velocity, Reflectors, Seismic Waves, Silicates, Water, Wave Propagation, Melting, Pressure Effects, Wave Reflection
Scientific paper
The effects of a silicate melt and water on seismic velocities are compared at relatively small fluid fraction (less than 20 vol.%) on the basis of a theoretical model of composite materials, to show that the two fluids are clearly characterized by the velocity ratio Vp/Vs. For a silicate melt, Vp/Vs increases with increasing fluid fraction. When a significant reflection is expected, Vp/Vs becomes much larger than 2. For water, Vp/Vs decreases as the fluid fraction increases to 10 vol.% then it increases. But it remains similar to a solid state value (about 1.8), unless the amount of water exceeds 15 vol.%. This will be a good measure to distinguish between two candidates for seismic reflectors: partially molten rocks and rocks containing free water. If a reflector can be treated as a thin low velocity layer, the velocity ratio in it can be estimated from the frequency dependence of reflection coefficient.
No associations
LandOfFree
Effects of water and melt on seismic velocities and their application to characterization of seismic reflectors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effects of water and melt on seismic velocities and their application to characterization of seismic reflectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of water and melt on seismic velocities and their application to characterization of seismic reflectors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-786642