000010354 001__ 10354
000010354 005__ 20141205155719.0
000010354 04107 $$aeng
000010354 046__ $$k2008-10-12
000010354 100__ $$aIwahara, Tatsuya
000010354 24500 $$aSafety Assessment of Underground Tank Against Long-Period Strong Ground Motion- Estimation of Deep Subsurface Structure by Observing Microtremor and Strong-Motion in Akita District

000010354 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010354 260__ $$b
000010354 506__ $$arestricted
000010354 520__ $$2eng$$aIn considering the safety of oil storage, it is important to grasp the characteristics of long-period ground motion causing sloshing, and it is also useful to investigate deep subsurface structures at the site, as well as to analyze the characteristics of long-period ground motion by the observed earthquake waves. In this study, we conducted the above investigation and analysis in Oga area where Akita National Petroleum Stockpiling Base is located and Akita City/Sanno area around Oga area. As s result, we obtained the following results: 1) In both areas, we estimated deep subsurface structures to reproduce both phase velocity and H/V ratio of microtremor observation records. 2) We confirmed that the group velocity of the strong-motion observation records approximately corresponded to the theoretical dispersion curve of the estimated deep subsurface structures in both areas. 3) According to the estimated deep subsurface structures, the depth of Vs=3km/s to be the seismic bedrock was 0.8km in the Oga area and 1.8km in the Sanno area, revealing that the structure in the Sanno area tends to amplify the long-period ground motion more than that in the Oga area.

000010354 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010354 653__ $$along-period ground motion, oil storage tank, deep subsurface structure, microtremor observation, strong-motion observation

000010354 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010354 720__ $$aIwahara, Tatsuya$$iMitsuta, Tsukasa$$iHorii, Yuji$$iIshii, Akira$$iOhbo, Naoto$$iHamada, Tomoyasu$$iKato, Kenji$$iMizuta, Toshihiko
000010354 8560_ $$ffischerc@itam.cas.cz
000010354 8564_ $$s432238$$uhttps://invenio.itam.cas.cz/record/10354/files/S10-019.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S10-019.
000010354 962__ $$r9324
000010354 980__ $$aPAPER