TY - GEN
T1 - Change of dynamic properties of ground before and after the Great East Japan Earthquake
AU - Seo, Genki
AU - Mori, Tomohiro
AU - Kazama, Motoki
AU - Matsushita, Katsuya
PY - 2013
Y1 - 2013
N2 - In this study, changes of seismic motion in a developed residential site in Sendai-City Japan before and after the Great East Japan Earthquake are mentioned. That is because the seismic motion character of fill ground may change before and after this large earthquake because of the fill ground damages. We observed earthquake records at a residential development which has numerous zones of cut and fill from the year 2007. The instrumental seismic intensity and the Fourier spectral ratio of acceleration were arranged using 33 earthquake records. As a result, at the cut area, observed seismic intensity was smaller than the fill area, on the whole. After the Great East Japan Earthquake, at almost all sites, the difference of instrumental seismic intensity against a base site became larger and at some site, the spectral ratio became larger at frequency of 4.5Hz to 6.0Hz than that of before the earthquake.
AB - In this study, changes of seismic motion in a developed residential site in Sendai-City Japan before and after the Great East Japan Earthquake are mentioned. That is because the seismic motion character of fill ground may change before and after this large earthquake because of the fill ground damages. We observed earthquake records at a residential development which has numerous zones of cut and fill from the year 2007. The instrumental seismic intensity and the Fourier spectral ratio of acceleration were arranged using 33 earthquake records. As a result, at the cut area, observed seismic intensity was smaller than the fill area, on the whole. After the Great East Japan Earthquake, at almost all sites, the difference of instrumental seismic intensity against a base site became larger and at some site, the spectral ratio became larger at frequency of 4.5Hz to 6.0Hz than that of before the earthquake.
KW - Cut and fill
KW - Dynamic property
KW - Reclaimed land
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M3 - Conference contribution
AN - SCOPUS:84907071251
SN - 9787114105821
T3 - 5th China-Japan Geotechnical Symposium
SP - 360
EP - 367
BT - 5th China-Japan Geotechnical Symposium
PB - People's Communications Press
T2 - 5th China-Japan Geotechnical Symposium: New Advances in Geotechnical Engineering
Y2 - 18 May 2013 through 19 May 2013
ER -