Fig. 12From: Directionally dependent horizontal-to-vertical spectral ratios of microtremors at Onahama, Fukushima, JapanComparison of the observed MHVRs (blue and red lines) with the analytical MHVRs (green line) for points C3, E2 and F4. The peak frequency and peak amplitude fit the NS/UD at point C3, both components at point E2 and the peak frequency at point F4Back to article page