冰川冻土 ›› 1995, Vol. 17 ›› Issue (3): 241-246.

• 研究论文 • 上一篇    下一篇


陈贤章1, 王光宇1, 李文君2, 曾群柱1, 金德洪1, 王丽红2   

  1. 1. 中国科学院兰州冰川冻土研究所, 730000;
    2. 甘肃省遥感中心, 730000
  • 收稿日期:1994-06-16 修回日期:1995-02-23 出版日期:1995-08-25 发布日期:2012-04-26

Lake Ice and Its Remote Sensing Monitoring in the Tibetan Plateau

Chen Xianzhang1, Wang Guangyu1, Li Wenjun2, Zeng Qunzhu1, Jin Dehong1, Wang Lihong2   

  1. 1. Lanzhou Institute of Glaciology and Geocryolohy, Chinese Acodemy of Sciences, 730000;
    2. Gansu Center for Remote Sensing, 730000
  • Received:1994-06-16 Revised:1995-02-23 Online:1995-08-25 Published:2012-04-26

摘要: 本文以青藏高原上的青海湖为例,研究了湖冰的年内及年际变化对气候变化的响应。根据青海湖周围气象站的观测资料,分析了湖冰状况、变化及与周围气温的关系:气温越低,湖冰越厚;湖冰变化对气温有滞后性。根据湖冰、湖水和湖岸在可见光、近红外和热红外波段的成像特点,利用NOAA卫星AVHRR资料对1993-1994年度的湖冰冻结情况做了监测,计算出不同日期湖水的冻结百分比和绝对冻结面积,并与气象站的观测结果作了进一步的对比分析。

关键词: 湖冰, 气温, 遥感监测

Abstract: The annual and interannual. changes of lake ice following the climatic changes were stu-died and the Qinghai Lake in Plateau was taken as an example in this paper.Lake ice condi-tion, change and relation with air temperature were analysed based on the observed data ofmeteorological stations.The lower the temperature,the thicker the ice;lake ice changes lagsbehind temperature’s. The lake ice was monitored using NOAA/AVHRR data based on theimaging characteristics of lake ice, water and lake bank in the wavelengths of visible,nearinfrared and thennalinfrared from 1993 to 1994.The percentage of lake ice and the areawere caculated,and further analysis was made using observed data of meteorological station.

Key words: lake ice, air temperature, remote sensing monitoring