Abstract
A dataset of instrumental seismic intensities recoreded in Gifu prefecture, central Japan, during 2000-2004 has been compiled. An average difference between recoreded seismic intensities and those estimated using the attenuation equation was defined as an index representing the site amplification; standard deviation and number of observations were also used. On this basis, site-specific characteristics which affect observed seismic intensities have been quantified. However, ratings of setting conditions of seismometers have had equivocal effects on observations. Besides Gifu prefecture, nationwide analysis should be made to develop knowledge on seismic intensity and to utilize it fully for future earthquakes.
