Re-opening of the temporary seismic station at Klokočov (Klok)

Abstract

In the mid-January, 2007, was re-opened the Klokočov (KLOK) seismic station. The essential goal of this station was detection of weak tectonic microearthquakes on the territory of northern Moravia and Silesia. Its usefulness was documented after just 2 months, when on January 31 was recorded an earhquake located close to Šumperk. Within this time interval also a few microearthquakes were recorded and evaluated by the Institute of Physic of the Earth, Masaryk University in Brno, the focal region of which was determined to broader vicinity of Šternberk. Moreover, the KLOK seismic station observed induced seismic events from the coal mines in the eastern part of the Ostrava-Karviná Coal Basin and a lot of quarry blasts as well. On seismograms of quarry blasts carried out in the quarry Jakubčovice nad Odrou there was detected also acoustic wave which made it possible to estimate the epicentral distance between quarry and seismic station KLOK. As an interesting phenomena can be considered a passage flight of a fireball above south Moravia which was observed at several seismic stations.