The Greek Database of Seismogenic Sources (GreDaSS): state-of-the-art for northern Greece

The Greek Database of Seismogenic Sources (GreDaSS) is a repository geological, tectonic and active-fault data for the Greek territory and its. In this report, we present the state-of-the-art of an on-going devoted to the building of the GreDaSS, which represents the results decades of investigations by the authors and a myriad of other researchers on the active tectonics of the broader Aegean Region. principal aim of this international project is to create a homogeneous of all of the data relevant to the seismotectonics, and especially seismic hazard assessment, of Greece and its surroundings, as as to provide a common research platform for performing seismic hazard, modeling and scenarios from specific seismogenic structures. particular, we introduce and synthetically describe the results obtained (and included in the database) to date in the northern sector of continental and the Aegean Sea. As a first step we collected all available (both published and unpublished) historical and instrumental seismicity relevant to the determining of the causative faults. Following the experience recent 'surprising' earthquakes (e. g. 1995 Kozani, and 1999), we realized the deficiency of such an approach, and decided to include in the GreDaSS active faults (i. e. seismogenic sources) recognized the basis of geological, structural, morphotectonic, paleoseismological geophysical investigations. A second step is the critical of all of the collected data for the extraction of the necessary seismotectonic, enabling the recognition of as many seismogenic as possible, as well as their characterization and parameterization. most updated version of the database consists of numerous seismogenic that are categorized into three types: composite, , and debated. In this report, we describe the major seismotectonic of all of the composite seismogenic sources and individual sources in northern Greece, which imply the partitioning the area into five sectors that show similar internal behavior. Northern was chosen as a pilot area because the parameters and accompanied of its seismogenic sources show a high level of confidence completeness. The amount of information and the degree of uncertainty different for the three types.