气候变化领域集成服务门户(CCPortal): Tectonic Regimes Inferred From Clustering of Focal Mechanisms and Their Distribution in Space: Application to the Central Mediterranean Area

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DOI	10.1029/2020JB020519
	Tectonic Regimes Inferred From Clustering of Focal Mechanisms and Their Distribution in Space: Application to the Central Mediterranean Area
	Scarfì L.; Langer H.; Messina A.; Musumeci C.
发表日期	2021
ISSN	21699313
卷号	126 期号:1
英文摘要	The study of the kinematics and stress field related to seismicity makes an important contribution to the understanding of tectonic processes. In this kind of analysis, a crucial issue is identifying seismically homogeneous areas, which implies data classification and cluster creation. We present an approach that combines unsupervised learning techniques in order to reveal patterns in the focal mechanisms data set. In particular, a combination of two popular clustering algorithms, that is, self-organizing maps and Fuzzy C-means, was applied to focal mechanisms of events located in the Central Mediterranean region, characterized by a complex geodynamic framework. The analysis allowed identifying eight groups of focal mechanisms and their spatial distribution in the crust, and revealing the tectonic style of key sectors of southern Italy and of the neighboring offshore areas. A compressive regime was found between the lower Tyrrhenian Sea and southeastern Sicily, whereas extension prevails along the Calabrian Arc and the southern Apennines. A NW-SE transcurrent faulting between the Aeolian Islands and the Ionian Sea forms a transfer zone between these two domains. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	3D gridding; focal mechanisms; tectonic regimes; unsupervised learning techniques
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187428
作者单位	Istituto Nazionale di Geofisica e Vulcanologia, Catania, Italy; Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy
推荐引用方式 GB/T 7714	Scarfì L.,Langer H.,Messina A.,et al. Tectonic Regimes Inferred From Clustering of Focal Mechanisms and Their Distribution in Space: Application to the Central Mediterranean Area[J],2021,126(1).
APA	Scarfì L.,Langer H.,Messina A.,&Musumeci C..(2021).Tectonic Regimes Inferred From Clustering of Focal Mechanisms and Their Distribution in Space: Application to the Central Mediterranean Area.Journal of Geophysical Research: Solid Earth,126(1).
MLA	Scarfì L.,et al."Tectonic Regimes Inferred From Clustering of Focal Mechanisms and Their Distribution in Space: Application to the Central Mediterranean Area".Journal of Geophysical Research: Solid Earth 126.1(2021).