low-velocity layer

low-velocity layer

[′lō və¦läs·əd·ē ‚lā·ər]
(geophysics)
A layer in the solid earth in which seismic wave velocity is lower than the layers immediately below or above.
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References in periodicals archive ?
Caption: Figure 3: (a) A near-surface low-velocity layer model, (b) the real part of the solution for f = 20 Hz obtained by the refined subgridding 25p with (H, h) = (10 m, 5 m), (c) the common-shot-point records for the wavefield by the refined uniform 25p with uniform grid size [h.
Bath (1957) studied the shadow zones, travel times and energies of longitudinal seismic waves in the presence of an asthenosphere low-velocity layer.
In this paper we have represented the low-velocity layer by assuming the rigidity and density in the inhomogeneous isotropic medium in the form
Velocity replacement of the heterogeneous low-velocity layer applied before stack, using wave-equation datuming instead of static corrections can increase the lateral continuity of reflections.
1995): Wave-equation velocity replacement of the low-velocity layer for over-thrust-belt data.