000011803 001__ 11803
000011803 005__ 20141205155948.0
000011803 04107 $$aeng
000011803 046__ $$k2008-10-12
000011803 100__ $$aTakahashi, Chika
000011803 24500 $$aModeling a 3-D Subsurface Structure Around Damaged Area Due to the Recent Earthquakes in Niigata, Japan Using Gravity Survey

000011803 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011803 260__ $$b
000011803 506__ $$arestricted
000011803 520__ $$2eng$$aMany active foldings are found and it is known that the subsurface structure is complex in the Niigata-ken Chuetsu area, Japan, where two destructive earthquakes were occurred on 2004 and 2007. In a case where we want to simulate the earthquake ground motions during the main shock in this area, detailed information is required with respect to the subsurface structure. This kind of information, however, is not provided enough in this time. We, thus, carried out the gravity survey around Chuetsu area at 517 sites and estimate a 3-D shape of the upper boundary for the gravity basement. For this, we develop a new technique to estimate the 3-D structure of ground with some different densities. Applying the technique, we obtain a model of subsurface structure. Through the comparison of the proposed model and the results from some previous researches, we can conclude that the proposed model provides more accurate and detailed information than previous ones.

000011803 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011803 653__ $$agravity survey, subsurface structure, bedrock, Niigata, Moving Window Poisson (MWP) analysis

000011803 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011803 720__ $$aTakahashi, Chika$$iMorikawa, Hitoshi$$iKomazawa, Masao$$iSekiguchi, Haruko$$iAkamatsu, Junpei$$iSawada, Sumio
000011803 8560_ $$ffischerc@itam.cas.cz
000011803 8564_ $$s2672380$$uhttps://invenio.itam.cas.cz/record/11803/files/02-0033.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 02-0033.
000011803 962__ $$r9324
000011803 980__ $$aPAPER