资源简介

摘要： 基于Landsat TM/ETM+及OLI遥感影像，对喜马拉雅山西段杰纳布流域冰川面积进行提取，对冰川时空分布特征及其变化分析，并结合周边气象台站及CRU再分析资料气温、降水量资料对研究区冰川变化原因进行讨论。结果表明：①1993~2016年杰纳布流域冰川面积萎缩了164.56±161.72 km2，占总面积的5.78%，年均萎缩率为0.25±0.25 %·a-1，且在2000年后加快萎缩；②杰纳布流域冰川在各个朝向和海拔带上均呈萎缩趋势，其中S朝向冰川面积萎缩率最大，占研究区冰川萎缩总面积的24.35%； 4 600~4 800 m和4 800~5 000 m两个海拔高度带冰川面积近23 a分别减少了29.93 km2和30.91 km2，占流域冰川面积萎缩总量的17.72%和18.30%；③1993~2016年杰纳布流域共有28条冰川末端发生不同程度的前进现象；④对狮泉河和Srinagar气象站及CRU再分析资料气温、降水量变化分析表明，1993~2016年该区域年均气温呈显著上升是杰纳布流域冰川萎缩的主要原因。 关键词： 冰川变化;  喜马拉雅山;  杰纳布流域;  遥感监测     Abstract: Based on Landsat TM/ETM+/OLI remote sensing images，the glacier boundaries in the Chenab basin of western Himalayas in three periods were manually delineated with visual interpretation method, and the characteristics of glacier variation were also analyzed with the temperature and precipitation of the surrounding meteorological stations and CRU reanalysis data．The results show that: ①From 1993 to 2016,the glaciers area in Chenab basin decreased 164.56±161.72 km2，accounting for 5.78% of the total area. The annul average shrinkage rate is 0.25±0.25 %·a-1 and it accelerated shrinking after 2000. ②The glaciers in the Chenab basin have shrinked in all orientations and altitudes. Among them, S orientation glaciers has the maximum shrinkage rate, accounting for 24.35% of the total area of glacial shrinkage. The glaciers areas between 4 600~4 800 m and 4 800~5 000 m is reduced 29.93 km2 and 30.91 km2 near 23 a,accounting for 17.72% and 18.30% of the total shrinkage of the glacier area in the basin respectively. ③From 1993 to 2016, there were 28 different glaciers had advanced in the Chenab basin. ④Analysis of temperature and precipitation changes in the two meteorological stations of Shiquan river and Srinagar and CRU reanalysis data shows that the average annual temperature in the region increased significantly from 1993 to 2016 caused glacier retreat.

相关资源

1. 水质遥感监测的关键要素叶绿素a的反演算法研究进展
2. 基于无人机遥感技术的森林参数获取研究进展
3. 基于无线传感器网络的森林生态系统观测试验平台构建
4. 基于无人机激光雷达的森林冠层高度分析
5. 多源时序国产卫星影像的森林火灾动态监测
6. 基于无人机遥感技术的台风灾害倒伏绿化树木检测

下载说明

·如果您发现该资源不能下载，请通知管理员.gissky@gmail.com

·为确保下载的资源能正常使用，请使用[WinRAR v3.8]或以上版本解压本站资源,缺省解压密码www.gissky.net ，如果是压缩文件为分卷多文件，请依次下载每一个文件，并按照顺序命名为1.rar,2.rar,3.rar...，然后鼠标右击1.rar解压.

·为了保证您快速的下载速度，我们推荐您使用[网际快车]等专业工具下载.

·站内提供的资源纯属学习交流之用,如侵犯您的版权请与我们联系.