Decade of seismological observations in the northern part of Moravo-Silesian region

Abstract

The essential point for seismological observation in the northern part of Moravia, Czech Republic, is a permanent seismicstation Ostrava – Krásné Pole (OKC) that is a part of the Czech regional seismological network (hereafter CRSN). Institute ofGeonics AS CR, v.v.i., has also operated temporary seismic stations in this region since 1997. Current seismological stationsare located in an abandoned mine working located in Zlaté Hory and in cellars in Klokočov and castle Raduň near Opava. The natural seismicity is after the swarm of microearthquakes in the vicinity of Opava in 1993 very low now. In region under discussion, seismic manifestations generated by mining induced seismicity in Upper Silesian Coal Basin (both Karviná andPolish parts) and in Legnica-Głogów Copper District (LGOM) are also detected. Significant part of observations in this region is made by the Institute of Physics of the Earth (hereafter IPE), Masaryk University Brno, and about 1000 microearthquakes have been detected during the last ten years with maximum local magnitude up to 1.9.