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This is a presentation of colleagues from the

This is a presentation of colleagues from the Masaryk University Brno - Institute of Physics of the Earth presented by Peter Melichar. Institute of Physics of the Earth at Masaryk University Brno www.ipe.muni.cz. • 14 people - seismologists, geologists, engineers

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This is a presentation of colleagues from the

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  1. This is a presentation of colleagues from the Masaryk University Brno - Institute of Physics of the Earth presented by Peter Melichar

  2. Institute of Physics of the Earth • at Masaryk University Brnowww.ipe.muni.cz • • 14 people - seismologists, geologists, engineers • • developing since 1981, joined with university in 1992 • • seismological monitoring, basic + applied research and teaching • some of us to be involved: J. Pazdirkova, R. Hanzlova, P. Spacek & J. Svancara – the boss Jana Romana Petr Jan

  3. Our infrastructure • • 3 networks of SP stations(green) for monitoring of local seismicity and nuclear power plants • • 4 broadband stations (red) - data for National Service and ZAMG, GEOFON, CTBTO, EMSC, ORFEUS, NEIC, ...

  4. Seismicity extends from the Alpine-Carpathian/Panonian region (ALCAPA) to its foreland. The Bohemian Massif acts as a buffer zone of „stable“ Europe. instrumentally recorded events for period 2000-2009 (the black/grey dots are Cenozoic anorogenic volcanics) Only weak tectonic activity with locally increased seismicity Max. instrumental M=4.6 Max. historical I~7.5-8

  5. Some general ideas for the Bohemian Massif • the stress/strain transfer from the active parts of ALCAPA to the adjacent low-seismicity regions should be studied • we have 2 nuclear power plants and growing community of seismic hazard sceptics around – we need to re-evaluate • catalogues should be revised and completed for earthquakes with long recurrence periods • geological record must be used for that – paleoseismology (see the first striking results of Czech and Austrian colleagues) • information on fault slip rate needed - conventional geodesy indicates an active fault slip

  6. Our activities and problems to be addressed: • • instrumental seismic data, incl. strong motion data – recording, processing, exchange (Romana, Jana) • • catalogue of instrumental events since 2000 incl. fakes (Jana) • • seismotectonic studies at ALCAPA/Bohemian Massif junction (all of us) • ? improvement of seismic station coverage (coop. with ZAMG?) • • completion of historical catalogues, joint catalogue for Central Europe? (Jana – coop. w. Christa and others) • • paleoseismology and geological input into seismic hazard issues (Petr) • ? satellite geodesy – PSInSAR (Petr would welcome help here – no experience, cooperation needed)

  7. Trenching the faults in the Boh. Massif– an example (P. Spacek, 2013) loam – resedimented upper loess? (Holocene) relic of paleosol 11.94±0.17 ky (14C) OSL datings not available yet,assumedage of top loess: last glacial 160+ cm slip on this young normal fault! (Primary tectonic origin + creep-like response of the slope.) loess + colluvia layered loess/red-brown silt 1x1m grid

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