Change of dynamic properties of ground before and after the Great East Japan Earthquake

Genki Seo, Tomohiro Mori, Motoki Kazama, Katsuya Matsushita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication5th China-Japan Geotechnical Symposium
PublisherPeople's Communications Press
Pages360-367
Number of pages8
ISBN (Print)9787114105821
Publication statusPublished - 2013 Jan 1
Event5th China-Japan Geotechnical Symposium: New Advances in Geotechnical Engineering - Chengdu, China
Duration: 2013 May 182013 May 19

Publication series

Name5th China-Japan Geotechnical Symposium

Other

Other5th China-Japan Geotechnical Symposium: New Advances in Geotechnical Engineering
CountryChina
CityChengdu
Period13/5/1813/5/19

Keywords

  • Cut and fill
  • Dynamic property
  • Reclaimed land

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Seo, G., Mori, T., Kazama, M., & Matsushita, K. (2013). Change of dynamic properties of ground before and after the Great East Japan Earthquake. In 5th China-Japan Geotechnical Symposium (pp. 360-367). (5th China-Japan Geotechnical Symposium). People's Communications Press.