Record details

Title
    Changes in the frequency-energy distribution of seismic events during mining in the Ostrava-Karviná Coal Field
Statement of responsibility
    Karel Holub
Author
    Holub, Karel
Language
    anglicky
Source title - serial
    Studia geophysica et geodaetica
Vol./nr.
    Roč. 43, č. 2
Pages
    s. 147-162
Year
    1999
Notes
    9 obr., 2 tab.
    il.
    Obsahuje bibliografické odkazy
    Zkr. název ser.: Stud. geophys. geod. (Praha)
Subject group
    hornoslezská pánev
    magnitudo
    měření seizmické
    seizmicita
    těžba povrchová
    uhelná sloj
    uhlí bituminózní
    zemětřesení indukované
Geographical name
    ČR-Morava
    Karviná
    Ostrava
Keyword
    Changes
    Coal
    Distribution
    During
    Events
    Field
    Frequency-energy
    Mining
    Ostrava-Karviná
    Seismic
Abstract (in english)
   The relation between the number of seismic events N and their magnitude and/or energetic magnitude is one of the basic relations in the statistics of eaerthquakes and mining-induced events. A detailed analysis of the b-values in the relation log N=a-b log E for the induced seismic events occuring in the Ostrava-Karviná Coal Basin is given in this paper. The least-square method, as well as the maximum likelihood method were applied in solving this problem mathematically. Based on the results of frequency-energy distribution analysis, it was proved that the variations of b-values in space and time do exist, and that these values are inversely proportional to the level of induced seismicity influenced by the various mining activities being carried out in-situ. This statement could, in general, be supported by the fact that lower b-values correpsond to higher seismic activity, while higher b-values correspond to low and moderate seismic activity
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    25. 3. 2008
Import date
    8. 8. 2012