气候变化领域集成服务门户(CCPortal): Deformation-controlled long-period seismicity in low-cohesion volcanic sediments

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DOI	10.1038/s41561-021-00844-8
	Deformation-controlled long-period seismicity in low-cohesion volcanic sediments
	Rowley P.; Benson P.M.; Bean C.J.
发表日期	2021
ISSN	1752-0894
卷号	14 期号:12
英文摘要	Volcano seismicity is an important tool in monitoring and forecasting activity at volcanoes globally. Volcanic earthquakes show diverse spectral characteristics, of which shallow long-period (low-frequency) seismicity and long-duration tremor are generally interpreted as indicators of fluid migration, and as potential eruption precursors. Here we show that a common low-cohesion volcanic sediment from the Campi Flegrei caldera (Italy) produces low-frequency and long-duration seismicity as it undergoes deformation in dry conditions. We employed acoustic-emission rock-deformation experiments at a range of strain rates to produce events that, when normalized for scale, were spectrally indistinguishable from the long-period and tremor seismicity observed in natural volcanic settings. The generation of these signals was enhanced at lower laboratory strain rates. Correlated X-ray tomography of the samples before and after deformation constrained the source as distributed damage. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	caldera; deformation mechanism; seismicity; volcanic eruption; Campania [Italy]; Campi Flegrei; Italy; Napoli [Campania]
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250829
作者单位	Rock Mechanics Laboratory, School of Earth and Environmental Sciences, University of Portsmouth, Portsmouth, United Kingdom; Department of Geography and Environmental Management, University of the West of England, Bristol, United Kingdom; School of Earth Sciences, University of Bristol, Bristol, United Kingdom; Geophysics Section, School of Cosmic Physics, Dublin Institute for Advanced Studies, Dublin, Ireland
推荐引用方式 GB/T 7714	Rowley P.,Benson P.M.,Bean C.J.. Deformation-controlled long-period seismicity in low-cohesion volcanic sediments[J],2021,14(12).
APA	Rowley P.,Benson P.M.,&Bean C.J..(2021).Deformation-controlled long-period seismicity in low-cohesion volcanic sediments.Nature Geoscience,14(12).
MLA	Rowley P.,et al."Deformation-controlled long-period seismicity in low-cohesion volcanic sediments".Nature Geoscience 14.12(2021).