| 基于NOAA／AVHRR数据的区域沙尘暴强度监测 |
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| 引用本文： | 范一大,史培军,潘耀忠,景贵飞.基于NOAA／AVHRR数据的区域沙尘暴强度监测[J].自然灾害学报,2001,10(4):46-51. |
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| 作者姓名： | 范一大 史培军 潘耀忠 景贵飞 |
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| 作者单位： | [1]北京师范大学环境演变与自然灾害教育部重点实验室，北京100875 [2]北京师范大学资源科学研究所，北京100875 |
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| 基金项目： | 国家重点基础研究发展规划基金资助项目(G2000018604) |
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| 摘 要： | 利用NOAA／AVHRR数据，通过查找表增强显示沙尘暴信息和利用经验模型提取沙尘信息，探讨了区域沙尘暴强度监测的方法。研究发现，利用可见光、近红外和远红外通道多光谱合成遥感数字图象对沙尘暴的监测和沙尘信息的提取效果明显；在低植被覆盖区域，利用GVI指数提取沙尘信息是不可行的，但这一指数有助于提取海面上的沙尘信息；并对沙尘浓度提取进行了探讨，以期显示区域沙尘暴的强度。
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| 关 键 词： | 沙尘暴 沙尘浓度 植被覆盖 遥感监测 |
| 文章编号： | 1004-4574-(2001)04-0046-06 |
| 修稿时间： | 2001年7月9日 |
Monitoring the intensity of regional dust storm using NOAA/AVHRR data |
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| FAN Yi-da,SHI Pei-jun,PAN Yao-zhong,JING Gui-fei.Monitoring the intensity of regional dust storm using NOAA/AVHRR data[J].Journal of Natural Disasters,2001,10(4):46-51. |
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| Authors: | FAN Yi-da SHI Pei-jun PAN Yao-zhong JING Gui-fei |
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| Abstract: | This paper discussed the methods about the intensity monitor of regional dust-storm with NOAA/AVHRR data, which highlighted dust-storm images by Lookup Table (LUT) and extracted dust-storm spatial information with empirical model. The study showed that the multi-spectral im- age of visible, near-infrared and far-infrared bands can monitor the dust-storm and sort its information effciently; and in the region of lower rate of vegetation coverage, it is not feasible to extract dust-storm information by the global vegetation index IGV, but it is helpful in ocean re- gion. Furthermore, the study tried to display the intensity of regional dust-storm by extracting the dust-storm density. |
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| Keywords: | dust-storm NOAA/AVHRR dust-storm density mornitor |
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