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Body waves as normal and leaking modes: Dispersion and excitation on the (+ –) sheet

DEPARTMENT OF GEOLOGY RICE UNIVERSITY, HOUSTON, TEXAS

Abstract

Leaking modes are little influenced by the presence of a low layer. The lattice-like structure of the phase-velocity curves occurs for a two-layer model as well as for a six-layer one. The excitation tends to be high where phase-velocity curves cross (or approach) each other. Both normally and inversely dispersed wave trains are predicted; the agreement with the observations varies from fair to good.

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