Strong Motion Prediction with Wide Area at Residential Sites in Kanagawa Ward, Yokohama City, Japan, during the Northern Tokyo Bay Earthquake based on Temporary Seismic Observation with High Dense Spatial Locations

Abstract

In this paper, ground shaking characteristics and strong motions in residential land in Kanagawa Ward, Yokohama City, Japan are estimated based on temporary earthquake observation records. In particular, first, 33 seismographs installed with very high density at not only cutting sites but also banking sites in the residential land of interest. Seismic waveform records are then observed at the created 33 sites during some moderate earthquakes. Based on the analysis consequence of the observed seismic waveforms, moreover, site amplification factors and site phase effects focused on Tokyo Bay Area were evaluated. Finally, strong motion prediction was carried out in the residential land of interest during the Northern Tokyo Bay Earthquake based on the empirical site amplification and phase effects.