Repository logo

Browsing by Subject "variability analysis"

Filter results by typing the first few letters
Now showing 1 - 1 of 1
  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Analiza zmienności zawartości siarki całkowitej i popiołu w węglu we fragmencie pokładu 308 złoża KWK „Ziemowit”
    (Data obrony: 2014-07-30) Paszek, Martyna
    Wydział Geologii, Geofizyki i Ochrony Środowiska
    This paper presents statistical and geostatistical characteristics of the variability of the total sulphur and ash content in part of seam 308 of “Ziemowit” colliery. Statistical analysis of both parameters showed big variability, significant deviations of empirical distributions from the theoretical normal distribution and occurrence of numerous outliers. Geostatistical analysis showed the occurrence of zonal anisotropy in parameters variability and heterogeneity of the seam. Gaussian model was used as a theoretical model of averaged semivariograms . Significant participation of the non-random component and big range of semivariograms confirmed the legitimacy of using geostatiscs for the estimation of sulphur and ash content. Significant decrease of interpolation errors during the transfer from points to blocks interpolation was discovered.