Record details

Title
    Present-day Seismicity of the Southeastern Elbe Fault System (NE Bohemian Massif)
Author
    Havíř, Josef
    Pazdírková, Jana
    Sýkorová, Zdeňka
    Špaček, Petr
    Švancara, Jan
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Studia geophysica et geodaetica
Vol./nr.
    Roč. 50, č. 4
Pages
    25
Year
    2006
Thesaurus term
    Bohemian Massif
    Elbe Fault System
    fault activity
    fluids
    focal mechanisms
    seismicity
    Sudetes
Keyword
    Bohemian
    Elbe
    Fault
    Massif
    NE
    Present-day
    Seismicity
    Southeastern
    System
Abstract (in english)
   The Variscan Bohemian Massif is disrupted by the NW-SE striking Elbe Fault System in its northern part. The increased tectonic activity associated with this structure is manifested by increased seismicity in the eastern part of the Sudetes. With the use of a temporary local seismic network, the total number of micro-earthquakes located in this region increased to 153 for the period 1996-2003. The local magnitudes vary between -0.6 and 1.8 and the seismic energy was often released in swarm-like sequences. Five seismic events with well-defined P-onset polarities at five or six stations enabled the estimation of focal mechanisms. The present-day activity of the WNW-ESE to NNW-SSE fault systems is discussed on the basis of source mechanisms, the alignment of the epicentres, as well as morphological and geological evidence. The majority of the recent seismic activity is concentrated in a 40-60 km wide zone of a generally NW-SE trend.
Contributor
    MU Brno, Přírodovědecká fakulta
Contributor code
    MU, PřF
Source format
    R
Import date
    8. 8. 2012