Observations of tectonic microdisplacements in Europe in relation to the Iran 1997 and Turkey 1999 earthquakes

Košťák, B.; Cacoń, Stefan; Dobrev, Nikolai; Avramova-Tačeva, E.; Fecker, Edwin; Kopeckỳ, J.; Petro, Lubomir; Schweitzer, R.; Никонов, А. А.

doi:10.1134/s1069351307060080

Cited by 15 publications

(15 citation statements)

References 8 publications

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“…The continental extent of tectonic events that involve strong earthquakes was recently indicated by Košt'ák et al (2007). There are indications that the period of increased geodynamic activity was associated in some way with coeval earthquake activity in Asia.…”

Section: Discussionmentioning

confidence: 96%

Tectonic movements monitored in the Bohemian Massif

Košťák

Mrlina

Štemberk

et al. 2011

Journal of Geodynamics

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Section: Discussionmentioning

confidence: 96%

Tectonic movements monitored in the Bohemian Massif

Košťák

Mrlina

Štemberk

et al. 2011

Journal of Geodynamics

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“…Some ideas in paralleling well-expressed micro-movements detected by TM 71 with earthquakes have been described by several authors (Košťák et al 2007;Stemberk et al 2008a;Briestenský et al 2007;Kontny et al 2005;Shanov 1993). According to the Košťák's hypothesis a strong earthquake would respond to temporary changes in the Earth's crust stress field detectable in the readings of sensitive extensometer instruments (Košťák 1998(Košťák , 2002.…”

Section: Correlation With Seismic Activitymentioning

confidence: 78%

Surface Versus Underground Measurements of Active Tectonic Displacements with TM 71 Exstensometers in Slovenia

Gosar

Šebela

Košťák

et al. 2009

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UDC 551.24(497.4-15) Andrej Gosar, Stanka Šebela, Blahoslav Košťák & Josef Stemberk: Surface versus underground measurements of active tectonic displacements with TM 71 exstensometers in Slovenia The tectonic setting of W Slovenia is characterised by NW-SE trending dextral strike-slip fault systems and moderate seismicity. Monitoring of tectonic movements along five presumably active faults or in their vicinity using TM 71 extensometers was set up in 2004. In five years of monitoring some clear trends of displacement were established. The morphologically most prominent fault in W Slovenia is Idrija Fault having a total length of more than 120 km. The average lateral displacement measured along a crack in its inner fault zone in Učja valley was 0.26 mm/year. Short-term rates were even greater and reached 0.54 mm/year. Raša Fault monitoring site at the foot of Vremščica Mt. established first an average uplift of SW block for 0.16 mm/year and left-lateral displacement of 0.16 mm/ year. It was followed by down-slip of the same block at the rate of 0.37 mm/year. In Postojnska Jama two instruments, 260 m apart, were installed at the fault zone, which extends about 1 km northeast from Predjama Fault. We detect small tectonic deformations, dextral horizontal movement of 0.05 mm in 5 years for Postojna 1 and extension of 0.03 mm in 5 years for Postojna 2. Both devices recorded similar reactions to some earthquakes with magnitude range 3.1-5.2 and epicentral distance of 12-95 km. The amplitude of individual peaks is in the order of 0.08 mm. The monitoring at Kneža Fault started at the end of 2006. In two years clear oblique displacement was established with left-lateral rate of 0.06 mm/year and uplift of SW block for 0.06 mm/year. Monitoring in Pološka Jama situated in vicinity of the Ravne Fault started in 2008. Preliminary results show 0.08 mm of horizontal displacement between two Izvleček UDK 551.24(497.4-15) Andrej Gosar, Stanka Šebela, Blahoslav Košťák & Josef Stemberk: Primerjava površinskih in podzemeljskih meritev aktivnih tektonskih premikov določenih s TM 71 ekstenziometri v zahodni Sloveniji Za tektonsko zgradbo zahodne Slovenije so značilni sistemi desnozmičnih prelomov usmerjeni NW-SE in zmerna potresna dejavnost. Leta 2004 smo pričeli z meritvami tektonskih premikov z ekstenziometri TM 71 ob petih domnevno aktivnih prelomih ali v njihovi bližini. V petih letih opazovanj smo ugotovili nekatere jasne trende premikov. Morfološko najmočneje izražen prelom v zahodni Sloveniji je Idrijski prelom, ki je dolg preko 120 km. Na razpoki v njegovi notranji coni v dolini Učje smo ugotovili povprečne zmične premike 0,26 mm/leto. Kratkotrajnejše hitrosti so še večje in dosežejo 0,54 mm/leto. Na Raškem prelomu v vznožju Vremščice smo ugotovili najprej dvigovanje SW bloka za 0,16 mm/leto in levozmične premike s hitrostjo 0,16 mm/leto. Sledilo je pogrezanje istega bloka za 0,37 mm/leto. V Postojnskem jamskem sistemu smo na razdalji 260 m namestili dva inštrumenta na prelomni coni, ki poteka okoli 1 km severovzhodno od Predjam...

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“…The observed fault zone transmits only very small tectonic movements, but long-term monitoring of different parameters could sufficiently explain the relations in Earth's karst massif related to changes in stress and strain before, during, and after the stronger earthquakes. Finally, we will continue our comparative research with other monitoring sites where we have results and ongoing data collection (Stemberk et al, 2003;Košťá k et al, 2007;Stemberk and Košťá k, 2007;Briestenský et al, 2007).…”

Section: Discussionmentioning

confidence: 99%