Evaluation of Magnitude, Hypocenter Distance and Subsurface Soil Effect to Spatial Variability of Ground Motions between Adjacent Sites
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- TOKUMITSU Ryoichi
- Technology Center, Taisei Corporation
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- YAMAMOTO Yu
- Technology Center, Taisei Corporation
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- UCHIYAMA Yasuo
- Technology Center, Taisei Corporation
Bibliographic Information
- Other Title
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- 地震規模・震源距離および表層の地盤構造が隣接地点間における地震動の空間変動に与える影響
Abstract
<p>Effects of magnitude, hypocenter distance and subsurface soil structure on the spatial variability of ground motions between adjacent sites are examined using observed records from the Chiba array and pairs of the K-NET and the KiK-net which are adjacent to each other. The statistical analysis of coherence and standard deviation of Fourier spectrum ratio of the ground motion show that the spatial variability of ground motion depends on magnitude, distance and subsurface soil structure. In particular, subsurface soil structure has the most significant influence on the variability. The decrease in S-wave velocity of subsurface soil causes a reduction of spatial coherence. And we also found that the longer the distance between observation sites, the deeper the soil properties effects to the spatial variability of ground motions.</p>
Journal
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- Journal of Japan Association for Earthquake Engineering
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Journal of Japan Association for Earthquake Engineering 19 (1), 1_34-1_52, 2019
JAPAN ASSOCIATION FOR EARTHQUAKE ENGINEERING
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Keywords
Details 詳細情報について
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- CRID
- 1390845713054753280
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- NII Article ID
- 130007605493
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- ISSN
- 18846246
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed