The Application of SIS (Sequential Indicator Simulation) for the Manganese Nodule Fields

망간단괴광상의 매장량평가를 위한 SIS (Sequential Indicator Simulation)의 응용

  • Park, Chan Young (Korea Ocean Research and Development Institute) ;
  • Kang, Jung Keuk (Korea Ocean Research and Development Institute) ;
  • Chon, Hyo Taek (Department of Mineral and Petroleum Engineering College of Engineering, Seoul National University)
  • 박찬영 (한국해양연구소 심해저자원 연구센타) ;
  • 강정극 (한국해양연구소 심해저자원 연구센타) ;
  • 전효택 (서울대학교 공과대학 자원공학과)
  • Received : 1997.10.14
  • Published : 1997.10.31


The purpose of this study is to develop geostatistical model for evaluating the abundance of deep-sea manganese nodule. The abundance data used in this study were obtained from the KODOS (Korea Deep Ocean Study) area. The variation of nodule abundance was very high within short distance, while sampling methods was very limited. As the distribution of nodule abundance showed non-gaussian, indicator simulation method was used instead of conditional simulation method and/or ordinary kriging. The abundance data were encoded into a series of indicators with 6 cutoff values. They were used to estimate the conditional probability distribution function (cpdf) of the nodule abundance at any unsampled location. The standardized indicator variogram models were obtained according to variogram analysis. This SIS method had the advantage over other traditional techniques such as the turning bands method and ordinary kriging. The estimating values by indicator conditional simulation near high abundance area were more detailed than by ordinary kriging and indicator kriging. They also showed better spatial characteristics of distribution of nodule abundance.