A simple method to extract glacier length based on Digital Elevation Model and glacier boundaries for simple basin type glacier

doi:https://doi.org/10.1007/s11629-016-4243-5

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.9

	A simple method to extract glacier length based on Digital Elevation Model and glacier boundaries for simple basin type glacier
	JI Qin; YANG Tai-bao; HE Yi; QIN Yan; DONG Jun; HU Fan-sheng
刊名	Journal of Mountain Science
	2017-09
卷号	14 期号:9 页码:1776-1790
关键词	Glacier Length Flow Lines Glacier Boundary Dem Arcgis
ISSN号	1672-6316
DOI	https://doi.org/10.1007/s11629-016-4243-5
通讯作者	YANG Tai-bao
文献子类	期刊论文
英文摘要	Glacier length is a key morphological element that has many glaciological applications; however, it is often difficult to determine, especially for glaciers that cover larger spatial areas or those that exhibit frequent temporal change. In this paper, we describe a new ArcGIS-based method that can derive glacier flow lines for determining glacier length based on digital elevation model and glacier outlines. This method involves (1) extraction of the highest and lowest points on a glacier, (2) calculation of 10-m contour lines on the glacier from 10 m to 100 m height, and (3) connection of the midpoints of each contour line with the highest and the lowest points in order to create a flow line, which is subsequently smoothed. In order to assess the reliability of this method, we tested the algorithm's results against flow lines calculated using field measurements, analysing data from the Chinese Glacier Inventory, and manual interpretation. These data showed that the new automated method is effective in deriving glacier flow lines when contour lines are relatively large; in particular, when they are between 70 m and 100 m. Nonetheless, a key limitation of the algorithm is the requirement to automatically delete repeated and closed curves in the pre-treatment processes. In addition to calculating glacier flow lines for derivation of glacier length, this method also can be used to effectively determine glacier terminus change.
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/19074]
专题	Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.9
推荐引用方式 GB/T 7714	JI Qin,YANG Tai-bao,HE Yi,et al. A simple method to extract glacier length based on Digital Elevation Model and glacier boundaries for simple basin type glacier[J]. Journal of Mountain Science,2017,14(9):1776-1790.
APA	JI Qin,YANG Tai-bao,HE Yi,QIN Yan,DONG Jun,&HU Fan-sheng.(2017).A simple method to extract glacier length based on Digital Elevation Model and glacier boundaries for simple basin type glacier.Journal of Mountain Science,14(9),1776-1790.
MLA	JI Qin,et al."A simple method to extract glacier length based on Digital Elevation Model and glacier boundaries for simple basin type glacier".Journal of Mountain Science 14.9(2017):1776-1790.