地质科技通报2020，Vol.39Issue(6)：75-82,8.DOI:10.19509/j.cnki.dzkq.2020.0622
模糊层次分析法在西南印度洋中脊46°～52°E多金属硫化物远景区预测中的应用
Application of fuzzy analytic hierarchy process to mineral prospectivity mapping of polymetallic sulfide deposits in the Southwest Indian ridge between 46°to 52°E
摘要
Abstract
As a product of hydrothermal activity，seabed polymetallic sulfides have good prospects for mineralization and development potential，and it has become the focus of marine mineral exploration in various countries. Fuzzy analytic hierarchy process (FAHP)，which combines fuzzy mathematics with expert knowledge，is a typical knowledge-driven quantitative prediction method for mineral resources. In this paper，the method is used to process the Polymetallic sulfide in the southwest Indian ridge. The weights of the nine evidence layers are calculated by combining expert experience. Finally，the gamma operator is used to synthesize the final prospective map. Through prediction-area (P-A)plot analysis, the optimalγfor FAHP was determined as 0.9. The threshold corresponding to different mineralization probability levels was determined by C-A fractal method，and the prediction performance of the method was evaluated. The results showed that in the prediction model based on FAHP，the area under the ROC curve was 0.887 and 90.5% of the known hydrothermal point and seismic point were predicted. Therefore，the method can effectively predict the favorable mineralization of the study area and can provide directions for future prospecting.关键词
矿产资源定量预测/模糊层次分析法/多金属硫化物矿床/西南印度洋中脊Key words
mineral prospectivity mapping/fuzzy analytical hierarchy process/polymetallic sulfide depos-its/southwest Indian Ridge分类
天文与地球科学引用本文复制引用
马瑶,赵江南,廖时理..模糊层次分析法在西南印度洋中脊46°～52°E多金属硫化物远景区预测中的应用[J].地质科技通报,2020,39(6):75-82,8.基金项目
国家重点研发计划(2017YFC0306803 （）
2016YFC0600509) （）
