植被覆盖区高光谱蚀变矿物信息提取

Extraction of Alteration Mineral Information Based on Hyperspectral Data in Vegetation Covering Field

在植被覆盖严重地区,基于综合光谱信息模型,开展了高光谱遥感典型蚀变矿物信息提取研究。以河北省承德市大营子地区为例,利用Hyperion数据,在植被覆盖度大于70%的地区,根据蚀变矿物与背景地物波谱特征的差异,提取了该区绿泥石、斜绿泥石、方解石和白云石蚀变矿物分布信息,与已知地质矿产资料及野外检查结果一致。最后依据蚀变矿物组合分布特征、遥感地质解译结果及相关地质资料,圈定了找矿有利地段。

In vegetation covered seriously field,based on synthetic spectral information model,the study on hyperspectral remote sensing information extraction for alteration mineral has been carried on.Taken Dayingzi field,Chengde City,Hebei Province as an example,based on the spectral curve difference between alteration minerals and background objects,the alteration mineral distributing information of chlorite,clinochlore,calcite and dolomite has been extracted based on Hyperion data in the field of vegetation covered more than 70 percent.The extracted alteration mineral distribution information is the same as the geology and mineral resources data conformed in the filed.At last,combining with the remote sensing geology interpretation result and relative geology information,with the combination distribution characteristics of the alteration mineral,the further favorable exploration area was delineated