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The use of evidential belief functions for mineral potential mapping in the Nanling belt, South China

机译：证据信念函数在华南岭带矿物势测绘中的应用

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摘要

In this study, the evidential belief functions (EBFs) were applied for mapping tungsten polymetallic potential in the Nanling belt, South China. Seven evidential layers (e.g., geological, geochemical, and geophysical) related to tungsten polymetallic deposits were extracted from a multi-source geospatial database. The relationships between evidential layers and the target deposits were quantified using EBFs model. Four EBF maps (belief map, disbelief map, uncertainty map, and plausibility map) are generated by integrating seven evidential layers which provide meaningful interpretations for tungsten polymetallic potential. On the final predictive map, the study area was divided into three target zones of high potential, moderate potential, and low potential areas, among which high potential and moderate potential areas accounted for 17.8% of the total area, containing 81% of the total deposits. To evaluate the success rate accuracy, the receiver operating characteristic (ROC) curves and the area under the curves (AUC) for the belief map were calculated. The area under the curve is 0.81 which indicates that the capability for correctly classifying the areas with existing mineral deposits is satisfactory. The results of this study indicate that the EBFs were effectively used for mapping mineral potential and for managing uncertainties associated with evidential layers.
机译：在这项研究中，证据信念函数（EBFs）被用于绘制中国南岭带钨多金属势。从多源地理空间数据库中提取了与钨多金属矿床有关的七个证据层（例如，地质，地球化学和地球物理）。证据层与目标矿床之间的关系使用EBFs模型进行了量化。通过整合七个证据层生成四个EBF图（信念图，不确定图，不确定性图和合理性图），这些证据层为钨多金属势提供了有意义的解释。在最终的预测图上，研究区域分为高，中，低电位三个目标区域，其中高，中电位占总面积的17.8％，占总面积的81％存款。为了评估成功率准确性，计算了置信度图的接收器工作特性（ROC）曲线和曲线下面积（AUC）。曲线下的面积为0.81，表明正确分类具有现有矿床的区域的能力令人满意。这项研究的结果表明，EBF被有效地用于绘制矿藏潜力和管理与证据层有关的不确定性。

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  • 来源
    《Frontiers of earth science》 |2015年第2期|342-354|共13页
  • 作者

    Liu Yue; Cheng Qiuming; Xia Qinglin; Wang Xinqing;

  • 作者单位

    China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China|China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China;

    China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China|York Univ, Dept Geog, Dept Earth & Space Sci & Engn, Toronto, ON M3J 1P3, Canada;

    China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China;

    China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Dempster-Shafer theory of evidence; GIS; uncertainty; tungsten polymetallic deposit; ROC curve;

    机译：Dempster-Shafer证据理论;GIS;不确定性;钨多金属矿床;ROC曲线;

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