Dictionary:Group velocity surface

From SEG Wiki
Jump to: navigation, search

Other languages:

The surface of elastic wave arrivals from a point source at a given time, that is, a wavefront (q.v.) or a surface of equal phase. Separate surfaces exist for each wave type (P-, S1-, and S2-waves). In isotropic media the two S-wave surfaces coincide; in anisotropic media they are separated over most but not all angles.