高分辨率遥感在西藏罗布莎地区地质调查中的应用
发布时间：2018-08-13 19:16
【摘要】：研究区位于西藏罗布莎地区,其罗布莎蛇绿岩体蕴藏着我国目前规模最大的铬铁矿床。以WorldView-2高空间分辨率遥感数据为基本信息源,对研究区进行遥感地质解译。与传统多光谱数据ETM+、ASTER等相比,WorldView-2具有更高的空间分辨率和相对较窄且连续的光谱。对研究区WorldView-2图像进行正射校正、大气校正和影像融合后,采用最佳指数法选择8-6-4波段组合进行假彩色合成,同时结合真彩色5-3-2波段,突出各地质体单元色调差异。我们利用其空间分辨率优势建立区内主要岩性和构造的高空间分辨率遥感解译标志。通过野外地质验证,解译结果充分显示了WorldView-2高分辨率影像在海拔较高、工作环境恶劣地区进行矿产资源勘查的技术优势和应用前景。
[Abstract]:The study area is located in the Luobusa area of Tibet, and its robusa ophiolite deposit contains the largest chromite deposit in China at present. Taking WorldView-2 high spatial resolution remote sensing data as the basic information source, the remote sensing geological interpretation of the study area is carried out. Compared with the conventional multispectral data, ETM / ASTER has a higher spatial resolution and a relatively narrow and continuous spectrum. After positive emendation, atmospheric correction and image fusion of WorldView-2 images in the study area, the best exponent method was used to select 8-6-4 band combination for pseudocolor synthesis, and the true color 5-3-2 band was combined to highlight the hue differences of plastid units in different regions. We make use of its spatial resolution advantage to establish the high spatial resolution remote sensing interpretation mark of the main lithology and structure in the area. Through the field geological verification, the interpretation results fully show the technical advantages and application prospects of WorldView-2 high-resolution images in the areas of high altitude and poor working environment for mineral resources exploration.
【作者单位】： 中国地质大学(北京)地球科学与资源学院;中国地质大学地质过程与矿产资源国家重点实验室;西藏自治区地质矿产勘查开发局第二地质大队;山东省地矿工程勘察院;
【基金】：中国地质调查局发展研究中心项目(121201004000150017-101)
【分类号】：P627
[Abstract]:The study area is located in the Luobusa area of Tibet, and its robusa ophiolite deposit contains the largest chromite deposit in China at present. Taking WorldView-2 high spatial resolution remote sensing data as the basic information source, the remote sensing geological interpretation of the study area is carried out. Compared with the conventional multispectral data, ETM / ASTER has a higher spatial resolution and a relatively narrow and continuous spectrum. After positive emendation, atmospheric correction and image fusion of WorldView-2 images in the study area, the best exponent method was used to select 8-6-4 band combination for pseudocolor synthesis, and the true color 5-3-2 band was combined to highlight the hue differences of plastid units in different regions. We make use of its spatial resolution advantage to establish the high spatial resolution remote sensing interpretation mark of the main lithology and structure in the area. Through the field geological verification, the interpretation results fully show the technical advantages and application prospects of WorldView-2 high-resolution images in the areas of high altitude and poor working environment for mineral resources exploration.
【作者单位】： 中国地质大学(北京)地球科学与资源学院;中国地质大学地质过程与矿产资源国家重点实验室;西藏自治区地质矿产勘查开发局第二地质大队;山东省地矿工程勘察院;
【基金】：中国地质调查局发展研究中心项目(121201004000150017-101)
【分类号】：P627
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