气候变化领域集成服务门户(CCPortal): Minor earthquake sequences in the Amatrice-Norcia epicentral area (Central Italy)

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DOI	10.1016/j.tecto.2021.228858
	Minor earthquake sequences in the Amatrice-Norcia epicentral area (Central Italy)
	Moschella M.; Ciaccio M.G.; Latorre D.
发表日期	2021
ISSN	00401951
卷号	809
英文摘要	This study presents a detailed analysis of minor seismic sequences recorded in the Amatrice-Norcia area (central Italy) before 2016 when the most important seismic sequence of the last 40 years struck the region with the Mw 6.0 Amatrice and the Mw 6.5 Norcia earthquakes. We observe that, in the four decades before the 2016–2018 Amatrice-Visso-Norcia sequence, the instrumental seismicity rate is low, with maximum magnitudes lower than Mw 4.0, and is characterized by different types of behaviours as single shock events, swarms and minor sequences. For the first time, we relocate the minor seismicity recorded before 2016 by the Italian National Seismic Network of the Istituto Nazionale di Geofisica e Vulcanologia by applying the nonlinear inversion code NonLinLoc in a local velocity model. Revised earthquake locations of the past seismic sequences are compared to the recent 2016–2018 seismicity in order to investigate some possible correlations with the seismogenic structures reactivated in 2016. With this goal, we also integrated our new hypocentral locations with fault plane solutions and geological data to interpret our results with respect to the 2016–2018 seismicity. Our results show how some of the structures identified by the minor seismicity before 2016 were reactivated during the recent sequence, while others seismic structures remained silent. We therefore highlight how the study of minor seismic sequences provides important information about the seismogenic attitude of less active or less known seismogenic structures with consequent impact on the evaluation of the seismic hazard. © 2021 Elsevier B.V.
关键词	Central Italy Minor seismic sequence NonLinLoc Seismotectonic
英文关键词	Geophysics; Physics; Earthquake location; Earthquake sequences; Fault plane solutions; Hypocentral locations; Maximum magnitudes; Non linear inversion; Seismic structure; Seismogenic structures; Earthquakes; decadal variation; earthquake epicenter; earthquake event; earthquake magnitude; seismic velocity; seismicity; seismotectonics; Amatrice; Italy; Lazio; Rieti
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/208034
作者单位	Università La Sapienza, Rome, Italy; Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
推荐引用方式 GB/T 7714	Moschella M.,Ciaccio M.G.,Latorre D.. Minor earthquake sequences in the Amatrice-Norcia epicentral area (Central Italy)[J],2021,809.
APA	Moschella M.,Ciaccio M.G.,&Latorre D..(2021).Minor earthquake sequences in the Amatrice-Norcia epicentral area (Central Italy).Tectonophysics,809.
MLA	Moschella M.,et al."Minor earthquake sequences in the Amatrice-Norcia epicentral area (Central Italy)".Tectonophysics 809(2021).