气候变化领域集成服务门户(CCPortal): A new automatic approach for extracting glacier centerlines based on Euclidean allocation

CCPortal

DOI	10.5194/tc-15-1955-2021
	A new automatic approach for extracting glacier centerlines based on Euclidean allocation
	Zhang D.; Yao X.; Duan H.; Liu S.; Guo W.; Sun M.; Li D.
发表日期	2021
ISSN	19940416
起始页码	1955
结束页码	1973
卷号	15 期号:4
英文摘要	Glacier centerlines are crucial input for many glaciological applications. From the morphological perspective, we proposed a new automatic method to derive glacier centerlines, which is based on the Euclidean allocation and the terrain characteristics of glacier surface. In the algorithm, all glaciers are logically classified as three types including simple glacier, simple compound glacier, and complex glacier, with corresponding process ranges from simple to complex. The process for extracting centerlines of glaciers introduces auxiliary reference lines and follows the setting of not passing through bare rock. The program of automatic extraction of glacier centerlines was implemented in Python and only required the glacier boundary and digital elevation model (DEM) as input. Application of this method to 48 571 glaciers in the second Chinese glacier inventory automatically yielded the corresponding glacier centerlines with an average computing time of 20.96 s, a success rate of 100 % and a comprehensive accuracy of 94.34 %. A comparison of the longest length of glaciers to the corresponding glaciers in the Randolph Glacier Inventory v6.0 revealed that our results were superior. Meanwhile, our final product provides more information about glacier length, such as the average length, and the longest length, the lengths in the accumulation and ablation regions of each glacier. © 2021 Copernicus GmbH. All rights reserved.
英文关键词	accuracy assessment; digital elevation model; glacier; glaciology; Alabama; Randolph County [Alabama]; United States
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202456
作者单位	College of Geography and Environment Sciences, Northwest Normal University, Lanzhou, China; College of Urban and Environmental Sciences, Northwest University, Xi'an, China; National Cryosphere Desert Data Center, Lanzhou, China; Institute of International Rivers and Eco-security, Yunnan University, Kunming, China; State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
推荐引用方式 GB/T 7714	Zhang D.,Yao X.,Duan H.,et al. A new automatic approach for extracting glacier centerlines based on Euclidean allocation[J],2021,15(4).
APA	Zhang D..,Yao X..,Duan H..,Liu S..,Guo W..,...&Li D..(2021).A new automatic approach for extracting glacier centerlines based on Euclidean allocation.Cryosphere,15(4).
MLA	Zhang D.,et al."A new automatic approach for extracting glacier centerlines based on Euclidean allocation".Cryosphere 15.4(2021).