Location of the new swarm upon the main fault plane in Novy Kostel - vertical section
The location of hypocenters is directly below the NKC station, so it appears a new patch of the fault plane is being activated - see the joint plot of all activity in NK area - the recent events are indicated in dark red.
Day seismograms from NKC station
Earthquake swarm 2008
Last update: 15.12.2009, 15:40 CET
Since 6th till 30th October 2008 more than 20 000 (!!) events occurred at the southerm edge of the Nový Kostel area. The hypocenters lie in the depth range 10.5 to 9 km (below the microswarm of February 2007) and have reactivated the southerm patch of the 2000 swarm. Several M>3.5 events have occurred making this swarm the strongest one since the M=4.6 swarm of 1985/86.
The swarm is exceptional by the unusually fast release of energy (>10 000 events in 7 days). Due to this evolution the activity is expected to continue in next days/weeks with possible interrupts.
Interesting links:
NEW: Sound of earthquake - the real seismogram from 28.10.2008 8:30 UTC of local magnitude 3.4 (50.2109N 12.4566E) converted into the music file format from stations Nový Kostel (wav, ogg), Luby (wav, ogg) and Vackov (wav, ogg). The sound contains very low frequencies (2 - 30 Hz). For listening is the bass loudspeaker (subwoofer) the best.
Live seismograms from NKC station (Nový Kostel) - records from 6.-29.10. 2008 for comparison (time is UTC)
Interactive map of recent earthquakes
Seismic activity in West Bohemia in details
Figures:
Magnitude-time plot of recent swarm
The depth sections below the Nový Kostel area. Last ploted activity is marked by dark red in depth range 7-12 km. The points are hypocenters since 1991 till present (for color coding see the upper magnitude-time plot).
