The ranked tile resampling in assessing accuracy for the global coal reserve estimates


Tercan A. E.

ENERGY SOURCES, vol.25, no.2, pp.93-102, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 2
  • Publication Date: 2003
  • Doi Number: 10.1080/00908310390142154
  • Title of Journal : ENERGY SOURCES
  • Page Numbers: pp.93-102

Abstract

Global estimation is the first and most important step in evaluating a coal deposit. Assessing accuracy for estimates constitutes the most difficult stage of this procedure. In this study, I introduce the ranked tile resampling method to assess uncertainty for the global means. It is based on producing a simulated version of the original field. The simulation is achieved by dividing the observation field into tiles, resampling them at random with replacement, and joining them together in a ranked order The method is applied to thickness and ash yield of a simulated coal deposit. The simulation results show that the ranking significantly improves the correlation structure of the resampled field, especially over short tile sizes.