Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL078212 |
Observations and Modeling of Long-Period Ground-Motion Amplification Across Northeast China | |
Chen, Haichao1,2,3; Tsai, Victor C.3; Niu, Fenglin1,2,4 | |
2018-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:12页码:5968-5976 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Basin resonances can significantly amplify and prolong ground shaking, and accurate site-amplification estimates are crucial for mitigating potential seismic hazards within metropolitan basins. In this work, we estimate the site amplification of long-period (2-10s) ground motions across northeast China for both surface waves and vertically incident shear waves. The spatial distribution of relatively large site amplifications correlates strongly with known sedimentary basins for both wave types. However, the site response of surface waves is typically twice as high as that of shear waves at most basin sites. We further show that these site-amplification features can be well explained by predictions based on the local one-dimensional structure at each site. Our results highlight the importance of accounting for surface-wave contributions and demonstrate the usefulness of semi-analytical theory for surface-wave amplification, which may be broadly applicable in future seismic hazard analysis. Plain Language Summary Surface waves are often the dominant wave type observed for large shallow earthquakes at relatively large distances. Surface-wave amplification at sites underlain by thick, soft sediments within the Songliao basin is substantially larger than in adjacent generic rock sites in northeast China. This highlights the importance of accounting for the contributions of surface waves in accurately predicting earthquake ground motions. A semi-analytic method for estimating surface-wave amplification can well explain the most significant site-amplification features, based on the local one-dimensional structure at each site. This approach may be broadly applicable in future seismic hazard analysis. |
英文关键词 | long-period ground motions site amplification surface wave northeast China |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438499100017 |
WOS关键词 | AMBIENT SEISMIC FIELD ; OSAKA SEDIMENTARY BASIN ; 2011 TOHOKU EARTHQUAKE ; SAN-FRANCISCO-BAY ; WAVE-PROPAGATION ; KANTO BASIN ; SURFACE-WAVES ; JAPAN ; SIMULATIONS ; PREDICTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26540 |
专题 | 气候变化 |
作者单位 | 1.China Univ Petr, Unconvent Nat Gas Inst, Beijing, Peoples R China; 2.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China; 3.CALTECH, Seismol Lab, Pasadena, CA 91125 USA; 4.Rice Univ, Dept Earth Environm & Planetary Sci, Houston, TX USA |
推荐引用方式 GB/T 7714 | Chen, Haichao,Tsai, Victor C.,Niu, Fenglin. Observations and Modeling of Long-Period Ground-Motion Amplification Across Northeast China[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(12):5968-5976. |
APA | Chen, Haichao,Tsai, Victor C.,&Niu, Fenglin.(2018).Observations and Modeling of Long-Period Ground-Motion Amplification Across Northeast China.GEOPHYSICAL RESEARCH LETTERS,45(12),5968-5976. |
MLA | Chen, Haichao,et al."Observations and Modeling of Long-Period Ground-Motion Amplification Across Northeast China".GEOPHYSICAL RESEARCH LETTERS 45.12(2018):5968-5976. |
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