Fig. 13

Plot of peak (fp) versus notch (fn) frequencies observed for S-net (black circles) and ETMC (red circles) stations with D1max > 1.5D2max. The dotted red circles are the peak and notch frequencies of ETMC stations divided by 1.6
Plot of peak (fp) versus notch (fn) frequencies observed for S-net (black circles) and ETMC (red circles) stations with D1max > 1.5D2max. The dotted red circles are the peak and notch frequencies of ETMC stations divided by 1.6