Seismogenic sources in the Adriatic Domain

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• 作者：Vanja Kastelic ; ^{vanja.kastelic@ingv.it} ; Paola Vannoli ; Pierfrancesco Burrato ; Umberto Fracassi ; Mara Monica Tiberti ; Gianluca Valensise
• 关键词：Active tectonics ; Seismogenic sources ; Apennines ; External Dinarides ; Adriatic Sea
• 刊名：Marine and Petroleum Geology
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：42
• 期：Complete
• 页码：191-213
• 全文大小：3415 K

文摘

We present an overview of the seismogenic source model of the Adriatic domain included in the latest version of the DISS database () and in the European SHARE database (). The model consists of Composite and Individual Seismogenic Sources located inside and along the margins of the Adria plate. In order to locate and parameterize the sources, we integrated a wide set of geological, geophysical, seismological and geodynamic data, either available from published literature or resulting from our own field work, seismic profile interpretations and numerical modelling studies. We grouped the sources into five regions based on geometrical and kinematic homogeneity criteria. Seismogenic sources of the Central Western Adriatic, North-Eastern Adriatic, Eastern Adriatic and Central Adriatic regions belong to the Northern Apennines, External Dinarides and offshore domains, respectively. They are characterized by NW-SE strike, reverse to oblique kinematics and shallow crustal seismogenic depth. Seismogenic sources of the Southern Western Adriatic region instead are E-W striking, dextral strike-slip faults, cutting both the upper and lower crust. The fastest moving seismogenic sources are the most southern thrusts of the Eastern Adriatic and the strike-slip sources of the Southern Western Adriatic, while the seismogenic sources of the Central Adriatic exhibit the lowest slip rates. Estimates of maximum magnitude are generally in good agreement with the historical and instrumental earthquake records, except for the North-Eastern Adriatic region, where seismogenic sources exhibit a potential for large earthquakes even though no strong events have been reported or registered. All sources included in the database are fully geometrically and kinematically parameterized and can be incorportaed in seismic hazard calculations and earthquake or tsunami scenario simulations.