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  • 1
    Electronic Resource
    Electronic Resource
    Estimate of earthquake hazard in the Vrancea (Romania) region (1991)
    Springer
    Pure and applied geophysics 136 (1991), S. 143-154 
    Details
    ISSN: 1420-9136
    Keywords: Earthquake statistics ; earthquake hazard ; Vrancea seismogenic region
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A maximum likelihood method is used to estimate the earthquake hazard parameters maximum magnitudeM max, annual activity rate λ, and theb value of the Gutenberg-Richter equation in the Vrancea (Romania) region. The applied procedure permits the use of mixed catalogs with incomplete historical as well as complete instrumental parts, the consideration of variable detection thresholds, and the incorporation of earthquake magnitude uncertainty. Our imput data, comprises 105 historical earthquakes which occurred between 984 and 1934, and a complete data file containing 1067 earthquakes which occurred during the period 1935–30 August, 1986. The complete part was divided into four subcatalogs according to different thresholds of completeness. Only subcrustal events were considered, and dependent events were removed. The obtained $$\hat b$$ value (=0.65) is at the lower range of the previously reported results, but it appears concurrent with conceptual and observational facts. The same concerns inferred value of $$\hat M$$ max = 7.8 and activity rate $$\hat \lambda $$ 4.0 = 5.34.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00878892
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  • 2
    Electronic Resource
    Electronic Resource
    Continuous evaluation of seismic hazard induced by the deposit extraction in selected coal mines in Poland (1989)
    Springer
    Pure and applied geophysics 129 (1989), S. 523-533 
    Details
    ISSN: 1420-9136
    Keywords: Induced seismicity ; seismic hazard ; seismic energy ; Polish coal mines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A probabilistic relation between seismic activity and the volumeV of extracted deposits in mines is derived $$\Sigma E = C \cdot V^B ,$$ whereC andB are parameters characterizing mining works and the state of rock mass. Assuming that the measure of seismic hazard is the amount of seismic energy released in a given time interval, it is shown how the hazard can be evaluated continuously. The derived relations were tested in selected coal mines in Upper Silesia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00874523
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  • 3
    Electronic Resource
    Electronic Resource
    Estimation of seismic hazard parameters in TERESA test areas (1989)
    Springer
    Natural hazards 2 (1989), S. 289-306 
    Details
    ISSN: 1573-0840
    Keywords: TERESA Project ; earthquake catalogues ; seismic hazard
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract A general overview of some of the problems involved in earthquake catalogue handling is given as part of the works carried out into the ESC/SC8-TERESA project related with the seismic hazard assessment in two selected test areas: Sannio-Matese in Italy and the northern Rhine region (BGN). Furthermore, the necessary input data to be used in the calculation of seismic hazard has been obtained, including earthquake source zones and their seismic hazard parameters. The importance is pointed out of detailed analysis of seismic catalogues, mainly in relation to the use of aftershock information, the historical records of the region, and the possible temporal and spatial variation of seismicity, which could have an important influence on short-term hazard assessment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00127318
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