| DOI: | 10.1002/2013GL058954
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| 论文题名: | Distinguishing high surf from volcanic long-period earthquakes |
| 作者: | Lyons J.J.; Haney M.M.; Fee D.; Paskievitch J.F.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10344
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| EISSN: | 1944-10075
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| 出版年: | 2014
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| 卷: | 41, 期:4 | | 起始页码: | 1171
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| 结束页码: | 1178
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| 语种: | 英语
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| 英文关键词: | infrasound
; Long-period seismicity
; surf
; volcanoes
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| Scopus关键词: | Earthquakes
; Water waves
; Glacial outburst floods
; Infrasound
; Long-period earthquakes
; Long-period seismicity
; Seismo-acoustic methods
; surf
; Unsteady pressures
; Waveform characteristics
; Volcanoes
; data set
; flood
; periodicity
; pressure effect
; signal
; volcanic earthquake
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| 英文摘要: | Repeating long-period (LP) earthquakes are observed at active volcanoes worldwide and are typically attributed to unsteady pressure fluctuations associated with fluid migration through the volcanic plumbing system. Nonvolcanic sources of LP signals include ice movement and glacial outburst floods, and the waveform characteristics and frequency content of these events often make them difficult to distinguish from volcanic LP events. We analyze seismic and infrasound data from an LP swarm recorded at Pagan volcano on 12-14 October 2013 and compare the results to ocean wave data from a nearby buoy. We demonstrate that although the events show strong similarity to volcanic LP signals, the events are not volcanic but due to intense surf generated by a passing typhoon. Seismo-acoustic methods allow for rapid distinction of volcanic LP signals from those generated by large surf and other sources, a critical task for volcano monitoring. Key Points A swarm of LP earthquakes at Pagan volcano is associated with heavy surf Seismo-acoustic analyses distinguish volcanic and surf LP signals LP swarms from surf have a distinct periodicity not seen in volcanic LPs ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894268270&doi=10.1002%2f2013GL058954&partnerID=40&md5=37fb331cb00993f0b1dc64dac46e7b7a
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7608
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Alaska Volcano Observatory, U.S. Geological Survey, Anchorage AK, United States
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| Recommended Citation: | |
Lyons J.J.,Haney M.M.,Fee D.,et al. Distinguishing high surf from volcanic long-period earthquakes[J]. Geophysical Research Letters,2014-01-01,41(4).
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