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DOI | 10.1002/2017GL076505 |
Broadband (0-4 Hz) Ground Motions for a Magnitude 7.0 Hayward Fault Earthquake With Three-Dimensional Structure and Topography | |
Rodgers, Arthur J.1,2,3,4; Pitarka, Arben1,2; Petersson, N. Anders5; Sjogreen, Bjorn5; McCallen, David B.3,6 | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:739-747 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We performed fully deterministic broadband (0-4 Hz) high-performance computing ground motion simulations of a magnitude 7.0 scenario earthquake on the Hayward Fault (HF) in the San Francisco Bay Area of Northern California. Simulations consider average one-dimensional (1-D) and three-dimensional (3-D) anelastic structure with flat and topographic free surfaces. Ground motion intensity measures (GMIMs) for the 3-D model display dramatic differences across the HF due to geologic heterogeneity, with low wave speeds east of the HF amplifying motions. The median GMIMs agree well with Ground Motion Prediction Equations (GMPEs); however, the 3-D model generates more scatter than the 1-D model. Ratios of 3-D/1-D GMIMs from the same source allow isolation of path and site effects for the 3-D model. These ratios show remarkably similar trends as site-specific factors for the GMPE predictions, suggesting that wave propagation effects in our 3-D simulations are on average consistent with empirical data. Plain Language Summary With the use of powerful supercomputers and an efficient numerical method, modeling of ground shaking for a magnitude 7.0 earthquake on the Hayward Fault results in more realistic motions than previously achieved. The model includes the current best representation of the Earth (geology and surface topography) to compute seismic wave ground shaking throughout the region. Shaking intensity shows differences across the Hayward Fault that arise from rocks of different geologic origin. On average, results are consistent with models based on actual recorded earthquake motions from around the world. This study shows that powerful supercomputing can be used to calculate earthquake shaking with more realism than previously obtained. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300030 |
WOS关键词 | SEISMIC-WAVE PROPAGATION ; FRANCISCO BAY AREA ; SAN-ANDREAS FAULT ; SCENARIO EARTHQUAKES ; SEDIMENTARY BASIN ; LONG-PERIOD ; PART II ; SIMULATION ; CALIFORNIA ; VALIDATION |
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/26663 |
专题 | 气候变化 |
作者单位 | 1.Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94550 USA; 2.Lawrence Livermore Natl Lab, Geophys Monitoring Program, Livermore, CA 94550 USA; 3.Lawrence Berkeley Natl Lab, Energy Geosci Div, Berkeley, CA 94720 USA; 4.Univ Calif Berkeley, Berkeley Seismol Lab, Berkeley, CA 94720 USA; 5.Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA USA; 6.Univ Calif, Off President, Oakland, CA USA |
推荐引用方式 GB/T 7714 | Rodgers, Arthur J.,Pitarka, Arben,Petersson, N. Anders,et al. Broadband (0-4 Hz) Ground Motions for a Magnitude 7.0 Hayward Fault Earthquake With Three-Dimensional Structure and Topography[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):739-747. |
APA | Rodgers, Arthur J.,Pitarka, Arben,Petersson, N. Anders,Sjogreen, Bjorn,&McCallen, David B..(2018).Broadband (0-4 Hz) Ground Motions for a Magnitude 7.0 Hayward Fault Earthquake With Three-Dimensional Structure and Topography.GEOPHYSICAL RESEARCH LETTERS,45(2),739-747. |
MLA | Rodgers, Arthur J.,et al."Broadband (0-4 Hz) Ground Motions for a Magnitude 7.0 Hayward Fault Earthquake With Three-Dimensional Structure and Topography".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):739-747. |
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