Main active faults from Eastern Part of Romania (Dobrogea and Black Sea). Part II: transversal and oblique faults system

摘要

The main target of this paper is to established a correlation between the seismicity of the Eastern part of Romania and the active tectonic (faults systems) of the area, the second target is to create a specific database of the faults (ROmanian DAtabase of SEismogenic Faults-RODASEF) in SHARE manner, for seismic hazard assessment process. This paper is a continuation of an article written by the same authors, in which were highlighted the longitudinal faults system from onshore and offshore of the Black Sea coast. To define the active faults, the following elements have been taken into account: Geometrical parameters: length, active length, width and depth of the earthquakes foci; Seismological parameters: strike, dip, rake (slip). In the studied area, there have been identified three fault systems: a longitudinal, transversal and an oblique one. In this paper, we present our results regarding the second and third type, i.e. main faults of the transversal and oblique systems. We present the transversal fault systems, parallel to the Black Sea coast comprising Razelm, Lacul Rosu, and West Midia Faults and the oblique fault systems with a NW-SE direction of the faults, such as Nistru, Odessa and West Crimea.