B. Castagnede et C. Depollier, CHARACTERISTIC SURFACES IN POROUS ANISOTR OPIC MEDIA USING BIOT THEORETICAL BACKGROUND, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 317(8), 1993, pp. 1007-1013
The present Note describes some numerical results illustrating the pro
pagation of elastic waves in homogeneous porous anisotropic media. The
standard Biot model is used. The computation of the eigenvalues yield
s.four real solutions corresponding to the three bulk modes and to the
Biot mode. The characteristic surfaces (group and phase slownesses, p
hase wavespeed and normal surface) are then computed.