A new attenuation relation for strong ground motion in Japan based on recorded data

Tatsuo Kanno, Akira Narita, Noboyuki Morikawa, Hiroyuki Fujiwara, Yoshimitsu Fukushima

研究成果: ジャーナルへの寄稿記事

192 引用 (Scopus)

抄録

Following the 1995 Hyogo-ken Nanbu Kobe. Earthquake, the Japanese government, in an effort to prevent future earthquake disasters, installed networks consisting of a large number of strong-motion observation stations. Further, national seismic hazard maps were made available to the public on an Internet website in March 2005 by the Headquarters for Earthquake Research Promotion. However, these maps indicate only the local seismic intensity for Japan, as empirically converted from predicted peak velocity in consolidated soils. For various applications, other strong-motion indexes such as the response spectral acceleration are required. In this study, a database of whole Japanese strong ground motion records between 1963 and 2003 is established in order to identify a new standard attenuation relation for Japan, for response acceleration as well as peak value. It is usually very difficult to determine a suitable model form due to the large variability of strong-motion data and correlation among the model variables, because the strong coupling of variables in an attenuation model, and the statistical power of the data is often not large enough to determine the necessity of these parameters. Therefore, in this study, our model has only three variables: earthquake magnitude, shortest distance to the seismic fault plane, and focal depth. To improve predictions given by the model, site correction terms are adopted and additional terms for correcting regional anomalous seismic intensity with respect to the base model are determined. The good fit between the model and observed strong-motion records suggests that the new model is reasonably robust.

元の言語英語
ページ(範囲)879-897
ページ数19
ジャーナルBulletin of the Seismological Society of America
96
発行部数3
DOI
出版物ステータス出版済み - 6 1 2006
外部発表Yes

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ground motion
Japan
attenuation
strong motion
Earthquakes
earthquakes
earthquake
peak acceleration
websites
disasters
promotion
earthquake magnitude
spectral sensitivity
fault plane
seismic hazard
Disasters
hazards
Websites
disaster
soils

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

これを引用

A new attenuation relation for strong ground motion in Japan based on recorded data. / Kanno, Tatsuo; Narita, Akira; Morikawa, Noboyuki; Fujiwara, Hiroyuki; Fukushima, Yoshimitsu.

:: Bulletin of the Seismological Society of America, 巻 96, 番号 3, 01.06.2006, p. 879-897.

研究成果: ジャーナルへの寄稿記事

Kanno, Tatsuo ; Narita, Akira ; Morikawa, Noboyuki ; Fujiwara, Hiroyuki ; Fukushima, Yoshimitsu. / A new attenuation relation for strong ground motion in Japan based on recorded data. :: Bulletin of the Seismological Society of America. 2006 ; 巻 96, 番号 3. pp. 879-897.
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