Additional Correction Terms for Attenuation Relations Corresponding to the Anomalous Seismic Intensity in Northeast Japan
スポンサーリンク
概要
- 論文の詳細を見る
We introduce additional correction terms into empirical prediction for peak seismic ground motions from intermediate depth earthquakes, which cause anomalous seismic intensity in northeast Japan. Here two terms for the empirical attenuation relations of Si and Midorikawa (1999) were determined by using observed strong motion records of K-NET and KiK-net. First term corresponds to the difference of peak amplitudes between the fore-and back-arc side in the region. Second corresponds to low attenuation of seismic waves propagating long distance in high-Q slab. The regional bias due to abnormal Q structure in the subduction zone can be corrected by the both introduced terms. By applying these new terms to the original empirical attenuation relations, the distribution and accuracy of the predicted peak ground motions from an intermediate depth event are improved remarkably in wide area beyond 300km.
- 一般社団法人 日本地震工学会の論文
一般社団法人 日本地震工学会 | 論文
- Scope of this issue
- Study on the Priority of Measuring against Scenario Earthquakes Based on Seismic Risk Estimation
- Investigation on Actual Disaster Responses in Local Governments in terms of Information Sharing
- Empirical Correction of Ground Motion Prediction Equations of Response Spectra at Rock Sites for Near-Field Earthquakes Considering Amplification Effect within Deep Subsurface Structure
- A Study for Estimating Suspension Time of Railway Lines Due to Earthquake