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Authors: Imprescia, P.*
Pondrelli, S.*
Vannucci, G.*
Gresta, S.*
Title: Regional centroid moment tensor solutions in Cyprus from 1977 to the present and seismotectonic implications
Title of journal: Journal of Seismology
Series/Report no.: 2/16(2012)
Publisher: Springer Science+Business Media B.V.
Issue Date: 2012
DOI: 10.1007/s10950-011-9254-7
Keywords: Focal mechanisms
Cyprus area
Abstract: We analyzed digital seismic records in order to extend back in time the catalog of regional centroid moment tensors (RCMTs) for the Cyprus region. We applied the analysis and inversion methodology also used for the present-day seismicity on seismograms recorded at regional distance. We computed 18 new regional CMTs of earthquakes of moderate magnitude (4.8≤M≤5.5) which occurred in the Cyprus region for the time span 1977–1996. These new focal mechanisms improved the knowledge given by the previously computed solutions carried out by other institutions, as well as the dataset of available earthquake source parameters. The complete focal mechanism database contributed to better define the deformation styles in the study area and to obtain a detailed characterization of the geodynamics of the Cyprus area. New RCMTs support the hypothesis that Cyprus is located in the middle of the transition area from subduction to continental collision along the Africa–Arabian–Eurasian boundary. In particular, data confirm (a) this transition zone is strictly located west of Cyprus, probably related to a tear in the subduction system, and (b) the still active compression in the Cyprus Arc can be seen as a starting point of the continental collision eastward.
Appears in Collections:04.07.02. Geodynamics
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