DOI: 10.1002/2016GL071334
论文题名: Semiautomatic mapping of permafrost in the Yukon Flats, Alaska
作者: Gulbrandsen M.L. ; Minsley B.J. ; Ball L.B. ; Hansen T.M.
刊名: Geophysical Research Letters
ISSN: 0094-8323
EISSN: 1944-8054
出版年: 2016
卷: 43, 期: 23 起始页码: 12131
结束页码: 12137
语种: 英语
英文关键词: airborne electromagnetic data
; machine learning
; permafrost mapping
Scopus关键词: Global warming
; Learning algorithms
; Learning systems
; Magnetometers
; Mapping
; Airborne electromagnetic
; Climate feedbacks
; Hydrogeological
; K-means clustering
; Large amounts
; Local environments
; Objective approaches
; Permafrost
英文摘要: Thawing of permafrost due to global warming can have major impacts on hydrogeological processes, climate feedback, arctic ecology, and local environments. To understand these effects and processes, it is crucial to know the distribution of permafrost. In this study we exploit the fact that airborne electromagnetic (AEM) data are sensitive to the distribution of permafrost and demonstrate how the distribution of permafrost in the Yukon Flats, Alaska, is mapped in an efficient (semiautomatic) way, using a combination of supervised and unsupervised (machine) learning algorithms, i.e., Smart Interpretation and K-means clustering. Clustering is used to sort unfrozen and frozen regions, and Smart Interpretation is used to predict the depth of permafrost based on expert interpretations. This workflow allows, for the first time, a quantitative and objective approach to efficiently map permafrost based on large amounts of AEM data. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006476412&doi=10.1002%2f2016GL071334&partnerID=40&md5=9332bda6a24c8efb0c51440e82ef3217
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9286
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Solid Earth Physics, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
Recommended Citation:
Gulbrandsen M.L.,Minsley B.J.,Ball L.B.,et al. Semiautomatic mapping of permafrost in the Yukon Flats, Alaska[J]. Geophysical Research Letters,2016-01-01,43(23).