The May-June 2012 Ferrara Arc earthquakes (northern Italy): structural control of the spatial evolution of the seismic sequence and of the surface pattern of coseismic fractures

Annals of Geophysics

Daniele Cirillo¹  Francesco Brozzetti²  Paolo Boncio²  Giusy Lavecchia³  Rita de Nardis³ 

[1] Dipartimento della Protezione Civile, Roma;Dipartimento della Protezione Civile, Roma;Università di Chieti-Pescara 'G. d'Annunzio', Dip. di Scienze Psicologiche, Umanistiche e della Terra, Laboratorio di Geodinamica e Sismogenesi, Chieti Scalo;

关键词: Seismogenic source;    Coseismic fracturing;    Compressional tectonics;    Ferrara arc earthquake;    Po Plain;   

DOI  :  10.4401/ag-6173

来源: DOAJ

【 摘 要 】

The Ferrara 2012 seismic sequence was characterized by two main compressional events, which occurred on May 20 and 29, 2012, with Mw 6.1 and Mw 6.0, respectively (quick Regional Centroid Moment Tensor [RCMT] at http://autorcmt.bo.ingv.it/quicks.html). These events were followed by five events with Mw >5.0 (two on May 20 and three on May 29, 2012) and by hundreds of events of lower magnitudes distributed along a WNW-ESE-elongated area of ca. 500 km2 (ISIDe database at http://iside.rm.ingv.it/ iside/standard/index.jsp.). The ongoing activity of the northward-verging fold-and-thrust structures of the Ferrara-Romagna Arc (Figure 1A) and the eastward-verging Coastal Adriatic Arc (referred to as the Outer Thrust System [OTS] in Lavecchia et al. 2003) has been a debated topic in the Italian literature. […]

【 授权许可】

Unknown