气候变化领域集成服务门户(CCPortal): Seismicity Rate Changes and Geodetic Transients in Central Apennines

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DOI	10.1029/2020GL090668
	Seismicity Rate Changes and Geodetic Transients in Central Apennines
	Vičič B.; Aoudia A.; Borghi A.; Momeni S.; Vuan A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Using template matching and GPS data, we investigate the evolution of seismicity and observable deformation in Central Apennines. Seismicity appears more persistent at the base of the seismogenic layer than in the shallower crust. Diffuse activity is reported on segments at depth, alternating along strike with apparent quiescence on segments that experienced one or more Mw6+ earthquakes in 1997, 2009, and 2016. Central Apennines are likely underlain by a sizeable shear zone with areas of diffuse seismicity bounding shallow normal faults where Mw6+ earthquakes occurred. The deformation observed at the surface seems to follow the seismicity variations at the base of seismogenic layer along the Apenninic chain. Principal and independent component analyses of GPS data exhibit a transient when the 2016 foreshock sequence starts. This transient propagated northward from the Campotosto fault up to the Alto Tiberina fault system and has likely loaded the Mw6+ 2016 earthquake sequence. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Deformation; Faulting; Geodetic satellites; Global positioning system; Template matching; Central Apennines; Earthquake sequences; Fault system; Foreshock sequences; GPS data; Normal faults; Seismogenic layers; Shear zone; Earthquakes; earthquake; earthquake event; foreshock; geodesy; GPS; induced seismicity; seismic data; seismicity; shear zone; spatiotemporal analysis; Apennines; Italy
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169465
作者单位	The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy; Istituto Nazionale Geofisica e Vulcanologia, sezione di Bologna, Bologna, Italy; National Institute of Oceanography and Applied Geophysics-OGS, Sgonico, Italy
推荐引用方式 GB/T 7714	Vičič B.,Aoudia A.,Borghi A.,et al. Seismicity Rate Changes and Geodetic Transients in Central Apennines[J],2020,47(22).
APA	Vičič B.,Aoudia A.,Borghi A.,Momeni S.,&Vuan A..(2020).Seismicity Rate Changes and Geodetic Transients in Central Apennines.Geophysical Research Letters,47(22).
MLA	Vičič B.,et al."Seismicity Rate Changes and Geodetic Transients in Central Apennines".Geophysical Research Letters 47.22(2020).