Using Landsat images to monitor changes in the snow-covered area of selected glaciers in northern Pakistan

doi:https://doi.org/10.1007/s11629-016-4097-x

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2017 > Vol14 No.10

	Using Landsat images to monitor changes in the snow-covered area of selected glaciers in northern Pakistan
	Chaman GUL; KANG Shi-chang; Badar GHAURI; Mateeul HAQ; Sher MUHAMMAD; Shaukat ALI
刊名	Journal of Mountain Science
	2017-10
卷号	14 期号:10 页码:2013-2027
关键词	Snow-covered Area Glacier Global Warming Classification Technique Northern Pakistan
ISSN号	1672-6316
DOI	https://doi.org/10.1007/s11629-016-4097-x
通讯作者	KANG Shi-chang
文献子类	期刊论文
英文摘要	Landsat satellite images were used to map and monitor the snow-covered areas of four glaciers with different aspects (Passu: 36.473°N,74.766°E;Momhil: 36.394°N,75.085°E;Trivor: 36.249°N,74.968°E;andKunyang:36.083°N,75.288°E)in the upper Indus basin, northern Pakistan, from 1990-2014. The snow-covered areas of the selected glaciers were identified and classified using supervised and rule-based image analysis techniques in three different seasons. Accuracy assessment of the classified images indicated that the supervised classification technique performed slightly better than the rule-based technique. Snow-covered areas on the selected glaciers were generally reduced during the study period but at different rates. Glaciers reached maximum areal snow coverage in winter and pre-monsoon seasons and minimum areal snow coverage in monsoon seasons, with the lowest snow-covered area occurring in August and September. The snow-covered area on Passu glacier decreased by 24.50%, 3.15% and 11.25% in the pre-monsoon, monsoon and post-monsoon seasons, respectively. Similarly, the other three glaciers showed notable decreases in snow-covered area during the pre- and post-monsoon seasons; however, no clear changes were observed during monsoon seasons. During pre-monsoon seasons, the eastward-facing glacier lost comparatively more snow-covered area than the westward-facing glacier. The average seasonal glacier surface temperature calculated from the Landsat thermal band showed negative correlations of -0.67, -0.89, -0.75 and -0.77 with the average seasonal snow-covered areas of the Passu, Momhil, Trivor and Kunyang glaciers, respectively, during pre-monsoon seasons. Similarly, the air temperature collected from a nearby meteorological station showed an increasing trend, indicating that the snow-covered area reduction in the region was largely due to climate warming.
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/19095]
专题	Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.10
推荐引用方式 GB/T 7714	Chaman GUL,KANG Shi-chang,Badar GHAURI,et al. Using Landsat images to monitor changes in the snow-covered area of selected glaciers in northern Pakistan[J]. Journal of Mountain Science,2017,14(10):2013-2027.
APA	Chaman GUL,KANG Shi-chang,Badar GHAURI,Mateeul HAQ,Sher MUHAMMAD,&Shaukat ALI.(2017).Using Landsat images to monitor changes in the snow-covered area of selected glaciers in northern Pakistan.Journal of Mountain Science,14(10),2013-2027.
MLA	Chaman GUL,et al."Using Landsat images to monitor changes in the snow-covered area of selected glaciers in northern Pakistan".Journal of Mountain Science 14.10(2017):2013-2027.