西藏多龙矿集区铜元素遥感地球化学模型

遥感在一定程度上可以反映地物元素含量的特征,利用遥感反演元素特征在地质工作程度低地区或者国外地质资料难以获取地区可以提供一个参数。本文根据元素含量与光谱关系,建立了波段相关斜率、波段的斜率指数、波段相关吸收深度指数、波段的相关多项式指数这4个遥感地球化学反演模型的指标,以西藏多龙矿集区为研究区,通过回归算法反演了铜元素遥感地球化学,并经过F检验证实反演可信,比较预测值与实际值吻合较好,最后把实测铜元素地球化学、蚀变遥感异常与遥感反演铜元素地球化学进行了对比,证实遥感铜元素地球化学反演结果较好,且可以作为一个独立的遥感参数。

A remote sensing Cu geochemical model for the Duolong ore concentration area, Tibet

The characteristics of elements content can be somewhat reflected by remote sensing. The remote sensing geochemistry can provide a parameter in many areas, especially in low geological exploration regions or in areas abroad where the acquisition of geological data are difficult. In this paper, according to the relationship between the element content and the spectra, four indicators of the remote sensing geochemical model were established, i.e., correlation slope of bands, slope index of bands, absorption depth of index of bands, and polynomial related index of bands. With the Duolong ore concentration area in Tibet as the study area, Cu element remote sensing geochemistry based on regression algorithm is in accordance with the measured Cu geochemistry, and F test confirmed the credibility of the inversion results. The remote sensing Cu geochemical results are good and can be considered to be an independent remote sensing parameter, as demonstrated by the comparison between the measured Cu element geochemistry and the remote sensing alteration anomalies.