Dictionary:Isovelocity surfaces

From SEG Wiki
Revision as of 14:32, 7 March 2017 by Sromahnr (talk | contribs) (Marked this version for translation)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Other languages:
English • ‎español

Surfaces of constant seismic velocity. In the absence of structural uplift and lateral variations of lithology, isovelocity surfaces are apt to be nearly horizontal planes. However, where structural uplift occurs, isovelocity surfaces tend to follow structure but with less relief than the structure. Changes in velocity bend seismic rays and hence alter apparent structure.