Vertical Array Records During 2007 Niigata-Ken Chuetsu-Oki Earthquake and Incident Wave Energy
Abstract eng: During the 2007 Niigata-ken Chuetsu-oki earthquake, a very strong motion was recorded by a vertical array seismic observation system in the TEPCO nuclear power plant, which clearly indicated soil nonlinearity effect. In this paper, time histories, response spectra and Fourier spectrum ratios of the recorded motions are shown and their characteristics are discussed. Then, soil properties for the main shock are back-calculated and compared, indicating a great degree of strain-dependent nonlinearity in sand dune layer. Finally, based on the results, seismic wave energy propagating upward by SH-wave is calculated to compare with that of other earthquakes. The incident energy at the base rock was 434 kJ/m2 and 73% of the energy was in the frequency range lower than 1.0 Hz, indicating the earthquake gave great impact on soil ground and backfill.
Contributors:
Conference Title:
Conference Title:
14th World Conference on Earthquake Engineering
Conference Venue:
Bejing (CN)
Conference Dates:
2008-10-12 / 2008-10-17
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-12-05, last modified 2014-12-05
guest ::
