| 基于ASD光谱仪的悬浮泥沙光学衰减系数研究 |
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| 引用本文： | 何颖清,邓孺孺,陈启东,陈蕾,秦雁. 基于ASD光谱仪的悬浮泥沙光学衰减系数研究[J]. 中山大学学报(自然科学版), 2011, 50(3) |
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| 作者姓名： | 何颖清 邓孺孺 陈启东 陈蕾 秦雁 |
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| 作者单位： | 1. 中山大学地理科学与规划学院,广东广州,510275
2. 中山大学地理科学与规划学院,广东广州510275;国家海洋局南海海洋工程勘察与环境研究院,广东广州510300 |
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| 基金项目： | 国家自然科学基金资助项目，水利部948资助项目，国家高技术研究发展计划(863计划)资助项目，广东省水利科技重点攻关资助项目 |
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| 摘 要： | 设计了基于ASD光谱仪的玻璃水槽实验，测量人工光源穿透不同水深、不同质量浓度含沙水体的辐亮度，以纯水为参照，得出了某一粒径组成下不同质量浓度悬浮泥沙在350~920 nm波段范围内的光学衰减系数。实验泥沙样本的光学衰减系数光谱特征单一，随着波长的增大逐渐减小，表现为一条略倾的曲线，且正比于泥沙质量浓度。在0~0.15 m深度范围内的，相同质量浓度的泥沙光学衰减系数随水深的变化可以忽略不计。从350~920 nm，实验泥沙样本的单位质量浓度光学衰减系数从0.084缓慢减小至0.069 m2/g。
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| 关 键 词： | 悬浮泥沙 光学衰减系数 ASD光谱仪 水质遥感 |
| 收稿时间： | 2010-07-02; |
Diffuse Attenuation Coefficient of Suspended Sediment based on ASD Spectrometer |
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| HE Yingqing,DENG Ruru,CHEN Qidong,CHEN Lei,QIN Yan. Diffuse Attenuation Coefficient of Suspended Sediment based on ASD Spectrometer[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2011, 50(3) |
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| Authors: | HE Yingqing DENG Ruru CHEN Qidong CHEN Lei QIN Yan |
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| Affiliation: | HE Yingqing1,DENG Ruru1,CHEN Qidong1,CHEN Lei1,2,QIN Yan1 (1.School of Geographic Science and Planning,Sun Yat-sen University,Guangzhou 510275,China,2.South China Sea Marine Engineering and Environment Institute,SOA,Guangzhou 510300,China) |
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| Abstract: | In this paper,a study was carried out to calculate the diffuse attenuation coefficient of suspended sediment by using the ASD F3.The experiment is based on measuring the radiance of an artificial light source penetrating through the water with different concentrations of suspended sediment in different water depths.Compared with pure water,the diffuse attenuation coefficients of suspended sediment with similar grain sizes were calculated for different concentrations with wavelength from 350 to 920 nm.The re... |
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| Keywords: | suspended sediment diffuse attenuation coefficient ASD Spectrometer remote sensing of water quality |
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