Fig. 2From: Modeling and inversion of the microtremor H/V spectral ratio: physical basis behind the diffuse field approach(Left) Imaginary part of Green’s functions G 11 and G 33 for a layer over a half-space. Black line corresponds to the horizontal response while dotted line represents the vertical one. (Right) H/V computed with Eq. 9. Dotted line was computed with Margerin’s (2009) methodBack to article page