Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075517 |
Amplification of Earthquake Ground Motions in Washington, DC, and Implications for Hazard Assessments in Central and Eastern North America | |
Pratt, Thomas L.1; Horton, J. Wright1; Munoz, Jessica1; Hough, Susan E.2; Chapman, Martin C.3; Olgun, C. Guney3 | |
2017-12-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The extent of damage in Washington, DC, from the 2011 M-w 5.8 Mineral, VA, earthquake was surprising for an epicenter 130 km away; U.S. Geological Survey "Did-You-Feel-It" reports suggest that Atlantic Coastal Plain and other unconsolidated sediments amplified ground motions in the city. We measure this amplification relative to bedrock sites using earthquake signals recorded on a temporary seismometer array. The spectral ratios show strong amplification in the 0.7 to 4 Hz frequency range for sites on sediments. This range overlaps with resonant frequencies of buildings in the city as inferred from their heights, suggesting amplification at frequencies to which many buildings are vulnerable to damage. Our results emphasize that local amplification can raise moderate ground motions to damaging levels in stable continental regions, where low attenuation extends shaking levels over wide areas and unconsolidated deposits on crystalline metamorphic or igneous bedrock can result in strong contrasts in near-surface material properties. |
英文关键词 | earthquake ground motions Washington DC mineral earthquake |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000422954700020 |
WOS关键词 | SITE RESPONSE ; MEXICO-CITY ; PERIOD FORMULAS ; SOUTH-CAROLINA ; UNITED-STATES ; SEISMIC ZONE ; BUILDINGS ; RESONANCE ; FREQUENCIES ; MAGNITUDE |
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/27179 |
专题 | 气候变化 |
作者单位 | 1.US Geol Survey, 959 Natl Ctr, Reston, VA 22092 USA; 2.US Geol Survey, Pasadena, CA 91106 USA; 3.Virginia Tech, Blacksburg, VA USA |
推荐引用方式 GB/T 7714 | Pratt, Thomas L.,Horton, J. Wright,Munoz, Jessica,et al. Amplification of Earthquake Ground Motions in Washington, DC, and Implications for Hazard Assessments in Central and Eastern North America[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(24). |
APA | Pratt, Thomas L.,Horton, J. Wright,Munoz, Jessica,Hough, Susan E.,Chapman, Martin C.,&Olgun, C. Guney.(2017).Amplification of Earthquake Ground Motions in Washington, DC, and Implications for Hazard Assessments in Central and Eastern North America.GEOPHYSICAL RESEARCH LETTERS,44(24). |
MLA | Pratt, Thomas L.,et al."Amplification of Earthquake Ground Motions in Washington, DC, and Implications for Hazard Assessments in Central and Eastern North America".GEOPHYSICAL RESEARCH LETTERS 44.24(2017). |
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