Studia Geophysica et Geodaetica

, Volume 53, Issue 3, pp 329–341 | Cite as

Geodynamic pattern of the West Bohemia region based on permanent GPS measurements

  • Vladimir Schenk
  • Zdeňka Schenkova
  • Zuzana Jechumtálová
Article

Abstract

In West Bohemia in the period of 2003–2005 five permanent GPS stations were established to detect local movement trends. Their mutual position changes were determined from time series of GPS observations and were associated with seismic, gravity, and geo-scientific data related to the geodynamics of the West Bohemian region. Knowledge of local physical processes based on spatial and time earthquake occurrences, focal mechanisms of main events, stress and strain fields set up a tool for recent seismotectonic analyses. The permanent GPS measurements bring independent effective phenomenon, direct monitoring of site movements. The movements detected by our GPS stations evidenced WSW-ENE extension with subsiding trends in the western part of the Cheb Basin and the Smrčiny Mts. Besides, there were monitored dextral movements along the Mariánské Lázně tectonic fault zone (MLF). A comparison of results with previous data formed a presumption that an antithetic stress pattern has to exist inside the inner part of the MLF tectonic zone. This antithetic stress can explain the coexistence of dextral and sinistral movements on individual tectonic elements in the West Bohemian area.

Key words

GPS data horizontal and vertical velocities West Bohemia earthquake swarm area 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Antonini M., 1988. Variations in the focal mechanism during the 1985/86 Western Bohemian earthquake swarm sequence-correlation with spatial distribution of foci and suggested geometry of faulting. In: Procházková D. (Ed.), Induced Seismicity and Associated Phenomena. Geophys. Inst. Czechosl. Acad. Sci., Praha, 250–270.Google Scholar
  2. Bankwitz P., Schneider G., Kämpf H. and Bankwitz E., 2003. Structural characteristics of epicentral areas in Central Europe: study case Cheb Basin (Czech Republic). J. Geodyn., 35, 5–32.CrossRefGoogle Scholar
  3. Behm M., Brückl E., Mitterbauer U., CELEBRATION 2000 and ALP 2002 Working Groups, 2007. A new seismic model of the Eastern Alps and its relevance for geodesy and geodynamics. Vermessung & Geoinformation, 2, 121–133.Google Scholar
  4. Calais E., Nocquet J.-M., Jouanne F. and Tardy M., 2002. Currents strain regime in the Western Alps from continuous GPS measurements, 1996–2001. Geology, 30, 651–654.CrossRefGoogle Scholar
  5. Collombet M., Thomas J.C., Chauvin A., Tricart P., Bouillin J.P. and Gratier J.P., 2002. Counterclockwise rotation of the Western Alps since the Oligocene: New insights from paleomagnetic data. Tectonics, 21, 1032, doi: 10.1029/2001TC901016.CrossRefGoogle Scholar
  6. Čermák V., Šafanda J., Krešl M. and Kučerová L., 1996. Heat flow studies in Central Europe with special emphasis on data from former Czechoslovakia. Global Tect. Metallogeny, 5(3/4), 109–123.Google Scholar
  7. Estey L.H. and Meertens C.M., 1999. TEQC: The multi-purpose toolkit for GPS/GLONASS data. GPS Solutions, 3(1), 42–49.CrossRefGoogle Scholar
  8. Finger F., Gerdes A., Janoušek V., René M. and Riegler G., 2007. Resolving the Variscan evolution of the Moldanubian sector of the Bohemian Massif: the significance of the Bavarian and the Moravo-Moldanubian tectonometamorphic phases. J. Geosci., 52, 9–28.CrossRefGoogle Scholar
  9. Grácová M., Mantlík F., Schenk V. and Schenková Z., 2007. Data processing of GNSS observations of the GEONAS network-effects of extreme meteorological conditions. Acta Geodyn. Geomater., 4(4), 153–161.Google Scholar
  10. Grünthal G., Schenk V., Zeman A. and Schenková Z., 1990. Seismotectonic model for the earthquake swarm 1985/86 in the Vogtland/West Bohemia focal area. Tectonophysics, 174, 369–383.CrossRefGoogle Scholar
  11. Hainzl S. and Fischer T., 2002. Indications for a successively triggered rupture growth underlying the 2000 earthquake swarm in Vogtland/NW Bohemia. J. Geophys. Res., 107(B12), 2338, doi: 10.1029/2002JB001865.CrossRefGoogle Scholar
  12. Heinicke J. and Koch U, 2000. Slug flow-a possible explanation for hydrogeochemical earthquake precursors at Bad Brandbach, Germany. Pure Appl. Geophys., 157, 1621–1641.CrossRefGoogle Scholar
  13. Heuer B., 2006. Lithospheric and Upper Mantle Structure beneath the Western Bohemian Massif Obtained from Teleseismic P and S Receiver Functions. PhD Thesis, GFZ Scientific Technical Report STR06/12, GeoForschung Zentrum, Potsdam, Germany, 149 pp.Google Scholar
  14. Heuer B., Geissler W.H., Kind R. and Kämpf H., 2006. Seismic evidence for asthenospheric updoming beneath the western Bohemian Massif, central Europe. Geophys. Res. Lett., 33, L05311, doi: 10.1029/2005GL025158.CrossRefGoogle Scholar
  15. Horálek J., Fischer T., Boušková A. and Jedlička, P., 2000. Western Bohemia/Vogtland region in the light of the WEBNET network. Stud. Geophys. Geod., 44, 107–125.CrossRefGoogle Scholar
  16. Horálek J., Šíleny J. and Fischer T., 2002. Moment tensors of the January 1997 earthquake swarm in NW Bohemia (Czech Republic): double-couple vs. non-double-couple events. Tectonophysics, 356, 65–85.CrossRefGoogle Scholar
  17. Hugentobler U., Dach R., Fridez P. and Meindl M. (Eds.), 2005. Bernese GPS Software-Version 5.0. Astronom. Inst., University of Bern, Bern, Switzerland, 464 pp.Google Scholar
  18. Kaiser A., Reicherter K., Hübscher C. and Gajewski, D., 2005. Variation of the present-day stress field within the North German Basin-insights from thin shell FE modeling based on residual GPS velocities. Tectonophysics, 397, 55–72.CrossRefGoogle Scholar
  19. Kárník V., Schenk V. and Schenková Z., 1987. Earthquake swarm in Western Bohemia 1985/1986: Some characteristics. Ann. Geophys., 5B(6), 691–700.Google Scholar
  20. Kostelecký J. and Vondrák J., 2003. IERS and its importance for global geodynamics. Acta Montana IRSM AS CR, Series A, 24(131), 7–19.Google Scholar
  21. Kottnauer P., Rucky A., Schenk V. and Schenková Z., 2003. Note to remote control of GPS observatory using GSM modem. Acta Montana, Series A, 24(131), 163–165.Google Scholar
  22. Larson K.M., Freymueller J.T. and Philipsen S., 1997. Global plate velocities from the global positioning system. J. Geophys. Res., 102(B5), 9961–9981.CrossRefGoogle Scholar
  23. Mantlík F., Kottnauer P., Schenk V. and Schenková Z., 2005. Transmission of continuously recorded data from remote GPS permanent stations to IRSM central unit. Acta Geodyn. Geomater., 2(3), 69–73.Google Scholar
  24. Mrlina J., 1997. Temporal variations of gravity in Western Bohemia: period 1993–1996. Stud. Geophys. Geod., 41, 307–318.CrossRefGoogle Scholar
  25. Mrlina J., 2000. Vertical displacements in the Nový Kostel seismoactive area. Stud. Geophys. Geod., 44, 336–345.CrossRefGoogle Scholar
  26. Mrlina J., Špičák A. and Skalský L., 2003. Non-seismological indications of recent tectonic activity in the West Bohemia earthquake swarm region. J. Geodyn., 35, 221–234.CrossRefGoogle Scholar
  27. Schenk V., Kottnauer P., Schenková Z. and Hájek P., 2004. Czech permanent GPS observatories for geodynamic investigations of the Bohemian Massif operated by the Institute of Rock Structure and Mechanics, Prague. Acta Geodyn. Geomater., 1(3), 111–114.Google Scholar
  28. Schenk V., Jechumtálová Z. and Schenková Z., 2007. Post-seismic slip of the February 2004 earthquake swarm detected by GPS in West Bohemia, Central Europe. Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract G13A-0925.Google Scholar
  29. Špičák A., Mrlina J., Jindra D. and Mervart L., 1997. Repeated geodetic measurements in the West Bohemia seismoactive region: period 1993–1996. Stud. Geophys. Geod., 41, 319–328.CrossRefGoogle Scholar
  30. Špičák A., Mrlina J., Jindra D. and Mervart L., 1999. Monitoring of geodynamic activity in the West Bohemia seismoactive region between 1993–1996. J. Geodyn., 27, 119–132.Google Scholar
  31. Švancara J., Gnojek I., Hubatka F. and Dědáček K., 2000. Geophysical field pattern in the West Bohemian geodynamic active area. Stud. Geophys. Geod., 44, 307–326.CrossRefGoogle Scholar
  32. Twiss R.J. and Moores E.M., 1992. Structural Geology, 2nd Edition. W. H. Freeman, New York, 736 pp.Google Scholar
  33. Wagner G.A., Gögen K., Jonckheere R., Wagner I. and Woda C., 2002. Dating of the Quaternary volcanoes Komorní Hůrka (Kammerbühl) and Železná Hůrka (Eisenbühl), Czech Republic, by TL, ESR, alpha-recoil and fission track chronometry. Z. Geol. Wiss., 30, 191–200.Google Scholar
  34. Weise S., Brauer, K., Kämpf H., Strauch G. and Koch U., 2001. Transport of mantle volatiles through the crust tracen by seismically released fluids: a natural experiment in the earthquake swarm area Vogtland/NW Bohemia, Central Europe. Tectonophysics, 336, 137–150.CrossRefGoogle Scholar
  35. Wendt J. and Dietrich R., 2003. Determination of recent crustal deformations based on precise GPS measurements in the Vogtland earthquake area. J. Geodyn., 35, 235–246.CrossRefGoogle Scholar
  36. Wirth W., Plenefisch T., Klinge K., Stammler K. and Seidl D., 2000. Focal mechanisms and stress field in the region Vogtland/Western Bohemia. Stud. Geophys. Geod., 44, 126–141.CrossRefGoogle Scholar

Copyright information

© Institute of Geophysics of the ASCR, v.v.i 2009

Authors and Affiliations

  • Vladimir Schenk
    • 1
  • Zdeňka Schenkova
    • 1
  • Zuzana Jechumtálová
    • 2
  1. 1.Centre for Earth Dynamics Research, Institute of Rock Structure and MechanicsAcad. Sci. Czech RepublicPraha 8Czech Republic
  2. 2.Institute of GeophysicsAcad. Sci. Czech RepublicPraha 4Czech Republic

Personalised recommendations