Gyrotropic properties of clayey sands and sandy clays have been investigated by acoustic measurements at frequencies of about 400 Hz in up to 18 m deep boreholes, using a special contact sonde with piezoelectric transducers. ...
In the case of propagation of plane elastic waves in anisotropic gyrotropic media, Christoffel tensor is complex; its real part contains stiffnesses and an imaginary part includes components of the fifth-rank gyration ...
A new concept, seismic gyrotropy, is presented in the context of both phenomenological and microlevel theory; comparison with the advanced theory of optical gyrotropy is given. Seismic gyrotropy is introduced as manifestation ...