MS_VTI

MS_VTI - generate elastic constants for a vertically transverse isotropic
            medium from Thomsen parameters. Symmetry is in the 3-axis.

Given Thomsen (1986) parameters for a weakly anisotropic
VTI medium, return the elasticity matrx

[C]=MS_VTI(vp,vs,rh,eps,gam,del)

Inputs:
    rh  : Density (kg/m2)
    vp  : km/s
    vs  : km/s
    eps, gam, del : Dimensionless

Output:
     C : Stiffness tensor (6x6 notation, GPa)

Note: this is wrapper for MS_TI, provided for back-compatibility. **

References:
    Thomsen, L. (1986) "Weak elastic anisotropy" Geophysics
        vol.51 pp.1954-1966

See also: MS_TI, MS_iso, MS_elasticDB