000010476 001__ 10476
000010476 005__ 20141205155731.0
000010476 04107 $$aeng
000010476 046__ $$k2008-10-12
000010476 100__ $$aKawabe, Hidenori
000010476 24500 $$aDamage Prediction of Long-Period Structures During Subduction Earthquakes- Part1:Long-Period Ground Motion Prediction in the Osaka Basin for Future Nankai Earthquakes

000010476 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010476 260__ $$b
000010476 506__ $$arestricted
000010476 520__ $$2eng$$aThe Nankai Trough earthquakes which are subduction earthquakes with magnitude greater than 8 have occurred at intervals of 90 to 150 years. The probability of earthquake occurrence within 30-years from January 1, 2008 are estimated at 60 - 70% and 50 % for the next Tonankai and Nankai earthquakes, respectively, showing very high possibility of the earthquake occurrence. It is very important to predict the long-period ground motions from the next Nankai Trough earthquakes for mitigating their disastrous effects. In this study, we show results of the prediction of future Nankai earthquake in Part 1 and the damage prediction map of high-rise buildings in the Osaka basin in Part 2. This paper (Part 1) focuses on the prediction of the long-period (>2.5s) ground motions in the Osaka basin during future Nankai earthquake using the 3D finite difference method and an earthquake scenario proposed by the Headquarters for Earthquake Research Promotion in Japan. The characteristics of the predicted long-period ground motions for the hypothetical Nankai earthquake are related with the geometry between the source and observation points, and with the thicknesses of the sediments of the basin. The duration of the long-period ground motions in an area located in the central part of the Osaka city is more than 4 minutes, and the largest peak ground velocities (PGVs) exceed 80cm/s. The predominant period is around 6 second. These results indicate the possibility of earthquake damage due to future subduction earthquakes in large-scale constructions such as tall buildings and oil storage tanks in the Osaka area.

000010476 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010476 653__ $$aLong period ground motion, Subduction earthquake, Nankai Trough, Finite difference method

000010476 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010476 720__ $$aKawabe, Hidenori$$iKamae, Katsuhiro$$iIrikura, Kojiro
000010476 8560_ $$ffischerc@itam.cas.cz
000010476 8564_ $$s3484857$$uhttps://invenio.itam.cas.cz/record/10476/files/S10-030.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S10-030.
000010476 962__ $$r9324
000010476 980__ $$aPAPER