Abstract
In 2006–2007, researchers of the IO RAS conducted seismological observations in the Baltic Sea and western Kaliningrad region with the use of ocean-bottom and land-based autonomous seismic stations. According to maps of general seismic zoning of the territory of Russia, the Kaliningrad region is aseismic. However, a series of seismic phenomena with magnitudes of about 5 and sources located near the Bay of Gdansk coast occurred here in September 2004. The total duration of the IO RAS seismological observations in five areas of the region under investigation was more than 200 days. The analysis of seismic records of the IO RAS network located sources of two local weak earthquakes with magnitudes ML = 3.4–3.5, which indicates that the seismic process in the western part of the Kaliningrad region continues and the region is far from being seismically stable.
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