Figure 1. The vertical component of the displacement field is depicted at the onset time along with the meshed model of the halfspace that is used as input for the SPECFEM3D simulations.

The force generating the plane surface waves is represented only in its vertical component. The building is made of stiffer material and it is also meshed with the halfspace. Dimensions are not to scale. (b) Same as (a) but here we see the pillars forming the lens that enclose and protect the building. (c) The velocity profile as function of the radius is depicted in blue for equation (1) and in gray for the effective velocity of each cell. The inset shows a zoomed view of the cylindrical pillar and the cell.