Kriging Interpolation for Evaluating the Mineral Resources of Cobalt-Rich Crusts on Magellan Seamounts
Kriging Interpolation for Evaluating the Mineral Resources of Cobalt-Rich Crusts on Magellan Seamounts
复制标题
克里金插值法评价麦哲伦海山富钴结壳矿产资源
DOI：
10.3390/min8090374
复制
发表时间：
2018-09-01
期刊：
影响因子：
2.5
通讯作者：
Yang, Gang
中科院分区：
文献类型：
--
作者：
Du, Dewen;Yan, Shijuan;Yang, Gang
用地质统计学方法评价海山矿产资源面临两大挑战。首先，所使用的传统距离/方位变差函数和简单的基于距离的变差函数在表示海山富钴结壳厚度的空间自相关性和连续性方面效果不佳。第二，由于调查费用高昂，用于单个海山的取样站通常分布非常稀疏，导致用于变差函数拟合的信息点数量不足。在这里，我们提出了一种替代的地质统计方法，使用距离/梯度和距离/相对深度为基础的变差函数处理从几个相邻的海山收集的数据，允许变差函数拟合。报告的麦哲伦海山应用实例表明，该方法适用于评价富钴结壳的矿产资源。该方法也可以有效地用于分析从陆地上的山坡获得的表面数据（例如，土壤）。
The evaluation of mineral resources on seamounts by geostatistics faces two key challenges. First, the conventional distance/orientation- and the simple distance-based variogram functions used are ineffective at expressing the spatial self-correlation and continuity of cobalt-rich crust thicknesses on seamounts. Second, the sampling stations used for a single seamount are generally very sparsely distributed because of the high survey costs, which results in an insufficient number of information points for variogram fitting. Here, we present an alternative geostatistical method that uses distance/gradient- and distance/relative-depth-based variograms to process data collected from several neighboring seamounts, allowing the variogram fitting. The application example reported for the Magellan seamounts demonstrates the suitability of the method for evaluating the mineral resources of cobalt-rich crusts. The method could be effective also for the analysis of surface data obtained from mountain slopes on land (e.g., soil).