Record details

Title
    Stress Analyses in the Epicentral Area of Nový Kostel (Western Bohemia)
Statement of responsibility
    Josef Havíř
Author
    Havíř, Josef
    Havíř, Josef, 1970-
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Studia geophysica et geodaetica
Vol./nr.
    Roč. 44, č. 4
Pages
    15
    s. 522-536
Year
    2000
Notes
    7 obr., 3 tab., 2 s.bibl.
    il.
    Zkr. název ser.: Stud. geophys. geod. (Praha)
Subject group
    chebská pánev
    epicentrum
    metoda matematická
    napětí
    ohniskový mechanismus
    sedimenty klastické
    seizmicita
    tlak orientovaný
    zemětřesný roj
Thesaurus term
    Nový Kostel area
    principal stresses orientation
    stress analysis
    Western Bohemia
Geographical name
    ČR-Čechy
    Nový Kostel (Cheb)
    SRN
Keyword
    Analyses
    Area
    Bohemia
    Epicentral
    Kostel
    Nový
    Stress
    Western
Abstract (in english)
   The focal mechanisms of events from three micro-earthquake swarms (swarm in the years 1985/86, swarm of December 1994, and swarm of January 1997) in the epicentral area of Nový Kostel (West Bohemia region) were used as input data for stress analyses. The simple graphical method of Angelier and Mechler (1977) and inversion by the program BRUTE3 (Hardcastle and Hills, 1993) were applied to the data collections. The results of the stress analyses for the 1985/86 swarm and for the swarm of December 1994 are similar. For the January 1997 swarm, the results of the analyses differ those for order swarms. The axis of maximum extension is oriented in the NE-SW direction and is subhorizontal, the axis of maximum compression is oriented in the NW-SE direction and perspicuosly dips towards SE. These results are similar to order results of stress analyses carried out for the 1985/86 swarm (Antonini, 1988; Sonnleitner, 1993).
   They, are also consistent with most of other published results of stress analyses conducted at different sites in the western part of the Bohemian Massif. The orientation of the principal stresses confirm the sinistral strike-slip movement along the Nový Kostel-Počátky-Zwota line (the trend is about 355ř) defined by the epicentres of the micro-earthquakes. The eastern tectonic limit of the Cheb Basin (and other respective parallel faults) could be characterised by normal rather than strike-slip faulting

   The focal mechanisms of events from three micro-earthquake swarms in the epicentral area of Nový Kostel (W Bohemia) were used for stress analyses. The results were compared with other published results of stress analyses in the western part of the Bohemian Massif. Possible character of recent displacement on some significant tectonic structures was deduced from the orientations of recent stresses.
Contributor
    Česká geologická služba
    MU Brno, Přírodovědecká fakulta
Contributor code
    ČGS (UNM)
    MU, PřF
Source format
    R
    U
Entered date
    31. 3. 2008
Import date
    8. 8. 2012