| 基于Hapke模型的矿物红外发射光谱随粒度与发射角的变异规律 |
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| 引用本文： | 闫柏琨,陈伟涛,王润生,杨苏明,孙卫东,陈建明.基于Hapke模型的矿物红外发射光谱随粒度与发射角的变异规律[J].地球科学,2009(6). |
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| 作者姓名： | 闫柏琨 陈伟涛 王润生 杨苏明 孙卫东 陈建明 |
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| 作者单位： | 中国国土资源航空物探遥感中心对地观测技术工程实验室;中国地质大学国家遥感中心地壳运动与深空探测部以及生物地质与环境地质教育部重点实验室;新疆地矿局信息中心; |
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| 基金项目： | 国土资源调查项目(No.20022014003); 中国地质调查局地质大调查项目(Nos.1212010660601,1212010811050-1) |
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| 摘 要： | 矿物红外发射光谱随粒度与发射角的变异是热红外地质遥感中的基础性问题之一,温度与发射率反演以及矿物信息提取均需要考虑发射光谱的变异.常规实验室矿物发射光谱测量技术难度较大,限制了对矿物发射光谱变异规律的深入研究.利用Hapke岩矿辐射传输模型对石英、白云母和钙长石3种矿物的发射光谱进行了模拟,将模拟结果与实测光谱进行了对比,总结了矿物发射光谱随粒度、发射角的变异规律,分析了Hapke发射率模型存在的问题.Hapke模型可较好地模拟矿物发射光谱整体谱形与主要光谱特征及其变异规律,但在某些光谱细节上与实测光谱仍有一定差异,其原因可能是模型中矿物介质中多次散射辐射为各向同性的假设所致;随粒度增加,吸收特征会增强,且位置可能发生漂移;随发射角增加,发射率逐渐减小,透射特征和吸收特征逐渐增强,但光谱的整体形状和透射特征、吸收特征、克里斯琴森特征的位置与形态均基本保持不变.
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| 关 键 词： | 发射率 矿物 红外光谱 |
Variation Law of Mineral Emissivity Spectra with Mineral Granularity and Emission Angle Based on Hapke Model |
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| YAN Bo-kun,CHEN Wei-tao,WANG Run-sheng,YANG Su-ming,SUN Wei-dong,CHEN Jian-ming.Laboratory of the Earth Observation Technology,China Aero Geophysical Survey , Remote Sensing Center for L, Resources,Beijing,China.Variation Law of Mineral Emissivity Spectra with Mineral Granularity and Emission Angle Based on Hapke Model[J].Earth Science-Journal of China University of Geosciences,2009(6). |
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| Authors: | YAN Bo-kun CHEN Wei-tao WANG Run-sheng YANG Su-ming SUN Wei-dong CHEN Jian-mingLaboratory of the Earth Observation Technology China Aero Geophysical Survey Remote Sensing Center for L Resources Beijing China |
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| Institution: | YAN Bo-kun1,CHEN Wei-tao2,WANG Run-sheng1,YANG Su-ming1,SUN Wei-dong3,CHEN Jian-ming31.Laboratory of the Earth Observation Technology,China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing100083,China2.Department for Crust Dynamics & Deep Space Exploitation of NRSCC & Key Laboratory of Biogeology and Environmental Geology of Ministry of Education,China University of Geosciences,Wuhan430074,China3.Information Center,Xinjiang Bureau of Exploration & Development of Geology & Min... |
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| Abstract: | One of basic issues in thermal infrared remote sensing geology is the variation law of mineral emissivity spectra with mineral granularity and emission angle,and the law is required when several kinds of ground information are retrieved such as temperature,emissivity and mineral. However,the law is still unknown because it is difficult to measure the mineral emissivity spectra in the laboratory. In this experiment,emissivity spectra of quartz,muscovite and anorthite are calculated using Hapke radiative tran... |
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| Keywords: | emissivity mineral infrared spectroscopy |
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