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| 基于非线性混合模型研究太空风化对月壤光谱的影响 | |
| 引用本文： | 吴昀昭,郑永春,邹永廖,谢志东,徐夕生.基于非线性混合模型研究太空风化对月壤光谱的影响[J].空间科学学报,2010,30(2). |
| 作者姓名： | 吴昀昭 郑永春 邹永廖 谢志东 徐夕生 |
| 作者单位： | 1. 南京大学地理与海洋科学学院,南京,210093 2. 中国科学院国家天文台 3. 南京大学地球科学与工程学院 |
| 基金项目： | 国家自然科学基金项目(40904051,40701125);;国家高技术研究发展计划项目(863计划,2008AA12A213);;澳门科技发展基金(003/2008/A1)共同资助 |
| 摘 要： | 月表太空风化会改变月壤光谱特征,影响月壤元素遥感反演精度.研究太空风化对月壤光谱的影响有助于开发月壤成熟度光谱解耦算法,提高月壤成分遥感反演精度.直接对比月壤风化前后光谱的变化能最真实反映太空风化对光谱的影响,但无法获取未风化的月壤样品,利用实验室模拟方法开展研究也存在缺陷.本文提出了一种简便的方法来研究太空风化对月壤光谱的影响,并以月海样品为例进行探讨.利用Hapke模型对月海样品组成矿物光谱按照实测含量进行非线性混合,并通过对比混合后的光谱与实测的月壤光谱,研究太空风化过程对月壤光谱的影响.研究结果表明,月壤在遭受太空风化后反射率降低,波长越短降低越显著;月壤背景吸收斜率增大,月壤变得更红,月壤矿物特征吸收峰深度降低,光谱对比度变弱,长波吸收峰(2.0μm附近)深度降低程度超过短波吸收峰(1.0μm附近)深度.未来在利用遥感技术反演月壤元素含量时,必须考虑这些因素. |
| 关 键 词： | 月壤 太空风化 非线性混合分解 Hapke模型 |
Research of the Optical Effects of Space Weathering on Lunar Regolith Based on the Nonlinear Mixing Model |
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| WU Yunzhao,ZHENG Yongchun,ZOU Yongliao,XIE Zhidong,XU Xisheng.Research of the Optical Effects of Space Weathering on Lunar Regolith Based on the Nonlinear Mixing Model[J].Chinese Journal of Space Science,2010,30(2). | |
| Authors: | WU Yunzhao ZHENG Yongchun ZOU Yongliao XIE Zhidong XU Xisheng |
| Affiliation: | School of Geographic and Oceanographic Sciences/a>;Nanjing University/a>;Nanjing 210093;National Astronomical Observatories/a>;Chinese Academy of Sciences;Department of Earth Sciences/a>;Nanjing University |
| Abstract: | The reflectance spectrum of lunar soil is mainly dominated by its composition and the degree of exposure to space weathering processes such as micrometeorite bombardment and solar wind implantation.The spectral alteration effects of space weathering should be removed for accurately investigating the composition of the lunar surface using remote sensing data.It can contribute to develop the method for decoupling the spectral effects of composition and maturity to improve the inversion accuracy by exploring t... |
| Keywords: | Lunar regolith Space weathering Nonlinear mixing Hapke model |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
