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Report on the coseismic and secondary effects of the May 22, 2012 Pernik EQ, Mw5.6, W Bulgaria

Our colleagues from the Bulgarian Academy of Science, Geological Institute “Strashimir Dimitrov“, have published a report on the coseismic and secondary effects of the May 22, 2012 Pernik earthquake, Western Bulgaria. The earthquake had a magnitude of MW5.6, see this special website of EMSC. Radulov et al. report intensities of up to VII (MSK) and various coseismic and secondary earthquake effects. Among those effects are:

  • Ground cracks, up to 0.05 m vertical displacement
  • Sag ponds
  • Landslides (maybe triggered by strong rain five days after EQ?)
  • Turbidity of water observed in springs after and also before the EQ (two weeks?)
  • Sulfur smell

They also attached a kmz-file for GoogleEarth with the locations of the observed features and a electrical resistivity profile which was recorded in the epicentral area.

Intensity map of the May 22, Bulgaria event. Image courtesy of EMSC.

Download the report here (pdf, 2mb) and the kmz file here or visit the Bulgarian Academy of Science website for further information.

Radulov, A., Yaneva, M., Shanov, S., Nikolov, V., Kostov, K., Nikolov, N., Hristov, V., Dobrev, N., Mitev, A., 2012. Report on field survey after May 22, 2012 Pernik earthquake June 6, 2012. Part 1: Coseismic geological effects related to May 22, 2012 Pernik earthquake, Western Bulgaria.

Dobrev, N., Ivanov, P., Berov, B., Krastanov, M., 2012. Report on field survey after May 22, 2012 Pernik earthquake June 6, 2012. Part 2: Secondary seismic effects

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Christoph Grützner

Christoph Grützner

works at the Department of Earth Sciences, University of Cambridge. He likes Central Asia and the Mediterranean and is looking for ancient earthquakes.

See all posts Christoph Grützner

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