Abstract
The area south and east of the Baltic Sea has very minor seismic activity. However, occasional events occur as illustrated by four events in recent years, which are analysed in this study: near Wittenburg, Germany, on May 19, 2000, M w = 3.1, near Rostock, Germany, on July 21, 2001, M w = 3.4 and in the Kaliningrad area, Russia, two events on September 21, 2004 with M w = 4.6 and 4.7. Locations, magnitudes (M L and M w) and focal mechanisms were determined for the two events in Germany. Synthetic modeling resulted in a well-confined focal depth for the Kaliningrad events. The inversion of macroseismic observations provided simultaneous solutions of the location, focal depth and epicentral intensity. The maximum horizontal compressive stress orientations obtained from focal mechanism solutions, approximately N–S for the two German events and NNW–SSE for the Kaliningrad events, show a good agreement with the regionally oriented crustal stress field.
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Grünthal, G., Stromeyer, D., Wylegalla, K. et al. The M w 3.1–4.7 earthquakes in the southern Baltic Sea and adjacent areas in 2000, 2001 and 2004. J Seismol 12, 413–429 (2008). https://doi.org/10.1007/s10950-008-9096-0
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DOI: https://doi.org/10.1007/s10950-008-9096-0