Fig. 9.

Relationship between the predominant periods of the H/V spectral ratio of microtremors and the estimated seismic intensities based on the questionnaire-based intensity of Muramatu and Kominami (1992) and the damage ratios of wooden houses of Muramatu (1983). Diamonds and squares show the points with a seismic intensity of 6 and 7, respectively. Closed symbols also indicate the points that have a predominant period shorter than approximately 0.4 s.