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DOI | 10.1002/2017GL074185 |
Modeling the Excitation of Seismic Waves by the Joplin Tornado | |
Valovcin, Anne1,2; Tanimoto, Toshiro1,2 | |
2017-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:20 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Tornadoes generate seismic signals when they contact the ground. Here we examine the signals excited by the Joplin tornado, which passed within 2 km of a station in the Earthscope Transportable Array. We model the tornado-generated vertical seismic signal at low frequencies (0.01-0.03 Hz) and solve for the strength of the seismic source. The resulting source amplitude is largest when the tornado was reported to be strongest (EF 4-5), and the amplitude is smallest when the tornado was weak (EF 0-2). A further understanding of the relationship between source amplitude and tornado intensity could open up new ways to study tornadoes from the ground. Plain Language Summary When a tornado touches down, its winds and air pressure shake the ground, creating small, but measurable, seismic waves. We look at these waves created by the Joplin tornado in Missouri (2011), which happened to pass close to a seismometer. We modeled these waves to find out how large of a force the tornado is exerting on the ground. We found that the force is largest during the time when the tornado was reported to be strongest (EF 4-5 on the Enhanced Fujita Scale) and smallest when the tornado was weak (EF 0-2). Further understanding this relationship could open a new way to study the strength of tornadoes by seismic waves. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416761600021 |
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/25603 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA; 2.Univ Calif Santa Barbara, Earth Res Inst, Santa Barbara, CA 93106 USA |
推荐引用方式 GB/T 7714 | Valovcin, Anne,Tanimoto, Toshiro. Modeling the Excitation of Seismic Waves by the Joplin Tornado[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(20). |
APA | Valovcin, Anne,&Tanimoto, Toshiro.(2017).Modeling the Excitation of Seismic Waves by the Joplin Tornado.GEOPHYSICAL RESEARCH LETTERS,44(20). |
MLA | Valovcin, Anne,et al."Modeling the Excitation of Seismic Waves by the Joplin Tornado".GEOPHYSICAL RESEARCH LETTERS 44.20(2017). |
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