西北边境地区冰冻圈遥感调查与监测(2013—2015年)主要进展

2013—2015年由中国国土资源航空物探遥感中心牵头开展了中国地质调查局地质调查项目“西北边境地区国土资源遥感综合调查”,我国西北边境高寒、高海拔地区的冰冻圈遥感调查是其中一项重要内容。冰冻圈遥感调查的主要进展有: 基于地形地貌、地温分布和坡度坡向特征等综合信息完成了藏北等地区的多年冻土范围调查; 利用高分1号(GF-1)宽幅数据和Landsat数据,对2013年1月—2014年12月期间阿里西部地区近10 000 km²的积雪覆盖情况进行了连续19个期次的动态监测; 基于1999—2013年间的Landsat多期影像,对班公湖和斯潘古尔湖冷季6个月份的湖冰覆盖情况进行了动态调查。

Research achievements on cryosphere investigation and monitoring using remote sensing techniques in the Northwest Border Area from 2013 to 2015

From 2013 to 2015, China Aero Geophysical Survey and Remote Sensing Center for Land and Resources leaded the geological survey project “Comprehensive Survey of Land and Resources Using Remote Sensing Technologies in the Northwest Border Area”. As alpine high-altitude and extremely cold area, cryosphere investigation and monitoring using remote sensing techniques in the Northwest Border Area is an important part of the survey works. The research achievements of cryosphere survey are as follows: based on the integrated information such as topography and geomorphology, ground surface temperature, slope and aspect, the permafrost regions have been interpreted in the Northwest Border area; using GF-1 broad width data and Landsat data, remote sensing monitoring about 19 times from Jan, 2013 to Dec, 2014,for the snow cover area, nearly 10 000 km², has been carried out in the west of Ngari Region; lake-ice cover for 6 months in the cold seasons in the Bangonghu Lake and Sipanguerhu Lake area has been monitored using the Landsat image data from 1999 to 2013.