| 摘要: |
| 在二十世纪八十年代,NASA开始设计地球观测系统(EOS),MODIS数据是地球观测系统中很具特色的数据,在 TERRA和 AQUA卫星上均搭载有 MODIS传感器.利用 MODIS的较高的空间分辨率和光谱分辨率进行地球资源的监测及预测、预报未来变化的研究是近几年热点的研究问题.本文介绍利用 EOS/MODIS遥感数据进行湖泊水域计算机自动识别及面积计算、湖水面温度反演、湖冰信息自动提取、湖泊封冻和解冻监测原理和方法,并以青海湖为例介绍了实际应用情况. |
| 关键词: 遥感监测 水体识别 湖水面积 水温反演 湖冰识别 |
| DOI：10.18307/2005.0413 |
| 分类号: |
| 基金项目:中国科技部公益类项目(2002DIB10052)资助 |
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| Remote Sensing Monitoring of Lake Qinghai Based on EOS/MODIS Data |
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YIN Qingjun1,2, YANG Yinglian2
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1.Qinghai Meteorological Institute, Xining 810001, P. R. China;2.Qinghai Remote Sensing Center, Xining 810001, P. R. China
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| Abstract: |
| MODIS data has the characteristic of high spatial and spectral resolution. The study on monitoring and predicting the potential change of earth resources based on EOS/MODIS data have become a heated issue. This paper introduced the principle and method of using EOS/MODIS data to distinguish water body from background, to extract ice from water body, to monitor the dynamic process of freeze-thaw, to calculate the area of water body and ice extent, as well as the water surface temperature. Furtheimoreythe study took the Lake QingHai for example, using the MODIS data completed the dynamic monitoring the process freeze-thaw, and at the same time, compared the real data of water surface temperature at fixed location of Jun. to Jul. 2003 with the result derived from the MODIS data of same period. At present, the model of monitoring inland lake described in this article ha9 already allied to the operational work of Qinghai Remote Sensing Center. |
| Key words: Remote Sensing Monitoring Lake Qinghai area of water surface water surface temperature lake ice |
