000010482 001__ 10482
000010482 005__ 20141205155732.0
000010482 04107 $$aeng
000010482 046__ $$k2008-10-12
000010482 100__ $$aKawase, Hiroshi
000010482 24500 $$aSeismic Responses of Irregular Ground –Four Decades of Development from Theory to Observation

000010482 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010482 260__ $$b
000010482 506__ $$arestricted
000010482 520__ $$2eng$$aThe seismic response of the ground is controlled by the source characteristics, path effects, and local site conditions. Among them local site conditions may have the largest impact on both the characteristics and the levels of seismic motions. In this review the summary our four decades of development on irregular ground responses will be provided. In 1970s digital computers had emerged to be a powerful tool to calculate theoretical responses of irregular grounds. Ever since numerical techniques have been developed and applied to simulate actual basin responses with irregular configurations. Prof. Takuji Kobori and his colleague was one of the pioneering groups working on the seismic responses of irregular grounds. In the same era relatively long period, later arrivals have started to be observed. In 1985 the Michoacan, Mexico earthquake occurred and extraordinarily long-lasting motions inside the Mexico City Basin had caused quite extensive damages to high-rise buildings. In 1995 the Hyogo-ken Nanbu (Kobe) earthquake occurred and mysterious damage concentration, the so-called “damage belt”, was formed. After these tragedies many studies had been performed to find that irregular ground responses were the key. The history of four decades on irregular ground effect studies suggests that both theoretical and observational studies are equally important so that we must promote them further to archive our goal, that is, quantitative prediction of strong ground motions.

000010482 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010482 653__ $$aIrregular ground, basin effects, sediment-filled valley, site effects, State-of-the-Art

000010482 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010482 720__ $$aKawase, Hiroshi
000010482 8560_ $$ffischerc@itam.cas.cz
000010482 8564_ $$s235189$$uhttps://invenio.itam.cas.cz/record/10482/files/S24-002.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S24-002.
000010482 962__ $$r9324
000010482 980__ $$aPAPER