Fig. 4

Phase velocity dispersion curves obtained from data of the five microtremor arrays deployed around the KUMA station. Dashed and dotted lines mark the limits imposed by Henstridge’s (1979) criterion, which are associated to the minimum, dmin, and maximum, dmax, inter-station distances of each array. Dashed lines correspond to wavelengths equal to 2 times dmin, whereas dotted lines to wavelengths 15.7 times dmax. Arrays are distinguished by the use of different colors