The most recent intense earthquake swarm in the Vogtland lasted from 6 October 2008 until January 2009. Greatest magnitudes exceeded M3.5 several times in October making it the greatest swarm since 1985/86. In contrast to the swarms in 1985 and 2000, seismic moment release was concentrated near swarm onset. Focal area and temporal evolution are similar to the swarm in 2000.
Work hypothysis: uprising upper-mantle fluids trigger swarm earthquakes at low stress level. To monitor the seismicity, the University of Potsdam operated a small aperture seismic array at 10 km epicentral distance between 18 October 2008 and 18 March 2009. Consisting of 12 seismic stations and 3 additional microphones, the array is capable of detecting earthquakes from larger to very low magnitudes (M<-1) as well as associated air waves. We use array techniques to determine properties of the incoming wavefield: noise, direct P and S waves, and converted phases.
| Identifer | oai:union.ndltd.org:Potsdam/oai:kobv.de-opus-ubp:2918 |
| Date | January 2009 |
| Creators | Rößler, Dirk, Hiemer, Stephan, Bach, Christoph, Delavaud, Elise, Krüger,Frank, Ohrnberger, Matthias, Sauer, David, Scherbaum, Frank, Vollmer, Daniel |
| Publisher | Universität Potsdam, Mathematisch-Naturwissenschaftliche Fakultät. Institut für Geowissenschaften |
| Source Sets | Potsdam University |
| Language | English |
| Detected Language | English |
| Type | Misc |
| Format | application/pdf |
| Rights | http://creativecommons.org/licenses/by-nc-sa/3.0/de/ |
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