caa a22 4500 475813650 CHVBK 20180406123804.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1007/PL00001102 doi (NATIONALLICENCE)springer-10.1007/PL00001102 Modelling of Block Structure Dynamics for the Vancea Region: Source Mechanisms of the Synthetic Earthquakes [Elektronische Daten] [A. A. Soloviev, I. A. Vorobieva, G. F. Panza] —The main structural elements (blocks) of the Vrancea (Romania)—the East-European plate; the Moesian, the Black Sea, and the Intra-Alpine (Pannonian-Carpathian) subplates—are assumed to be rigid and separated by infinitely thin plane faults. The interaction of the blocks along the fault planes and with the underlying medium is elasto-viscous. The velocity vectors which define the motion of the East-European plate and of the medium underlying the subplates are input model parameters, which are not changed during the numerical simulation. At each time, the displacements of the subplates caused by these motions are defined so that the system is in the quasistatic equilibrium state. When, for some part of a fault plane, the stress exceeds a certain strength level, a stress-drop (a failure) occurs (in accordance with the dry friction model), and it can cause failures in other parts of the fault planes. The failures represent earthquakes and, as a result of the numerical simulation, a synthetic earthquake catalog is produced. Panza et al. (1997) and Soloviev et al. (1999) have determined the ranges for the values of the motion velocity vectors and of the other parameters of the model for which the space distribution of epicenters and the frequency-magnitude relation in the synthetic earthquake catalog are close to those of the observed seismicity. In this paper we study the variation of the slip angle of the synthetic earthquakes as a function of the variation of the model parameters, and we compare our results with observations. Birkhäuser Verlag Basel,, 2000 Key Words: Block structure dynamics, Vrancea, numerical simulation, source mechanisms nationallicence Soloviev A. A. International Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences, Moscow, Russia., RU aut Vorobieva I. A. International Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences, Moscow, Russia., RU aut Panza G. F. The Abdus Salam International Centre for Theoretical Physics, SAND Group, Trieste, Italy., IT aut https://doi.org/10.1007/PL00001102 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00001102 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Soloviev A. A. International Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences, Moscow, Russia., RU aut NATIONALLICENCE 700 1- Vorobieva I. A. International Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences, Moscow, Russia., RU aut NATIONALLICENCE 700 1- Panza G. F. The Abdus Salam International Centre for Theoretical Physics, SAND Group, Trieste, Italy., IT aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer