DOI: 10.1016/j.gloplacha.2016.04.008
论文题名: The dynamics of supraglacial water storage in the Everest region, central Himalaya
作者: Watson C.S. ; Quincey D.J. ; Carrivick J.L. ; Smith M.W.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2016
卷: 142 起始页码: 14
结束页码: 27
语种: 英语
Scopus关键词: Ablation
; Dynamics
; Ponds
; Satellite imagery
; Annual change
; Debris covered glaciers
; Fine resolution
; Observation Period
; Partially drained
; Resolution imagery
; Spatio-temporal dynamics
; Water storage
; Lakes
英文摘要: The dynamics of supraglacial pond development in the Everest region are not well constrained at a glacier scale, despite their known importance for meltwater storage, promoting ablation, and transmitting thermal energy englacially during drainage events. Here, we use fine-resolution (~. 0.5-2 m) satellite imagery to reveal the spatiotemporal dynamics of 9340 supraglacial ponds across nine glaciers in the Everest region. Six of our nine study glaciers displayed a net increase in ponded area over their observation periods. However, large inter- and intra-annual changes in ponded area were observed of up to 17% (Khumbu Glacier), and 52% (Ama Dablam) respectively. Additionally, two of the fastest expanding lakes (Spillway and Rongbuk) partially drained over our study period. The Khumbu Glacier is developing a chain of connected ponds in the lower ablation area, which is indicative of a trajectory towards large lake development. We show that use of medium-resolution imagery (e.g. 30 m Landsat) is likely to lead to large classification omissions of supraglacial ponds, on the order of 15-88% of ponded area, and 77-99% of the total number of ponds. Fine-resolution imagery is therefore required if the full spectrum of ponds that exist on the surface of debris-covered glaciers are to be analysed. © 2016 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84965010101&doi=10.1016%2fj.gloplacha.2016.04.008&partnerID=40&md5=30c3b0de66cbdf2ce928ab157d8af64b
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11671
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
There are no files associated with this item.
作者单位: School of Geography and water leeds, University of Leeds, Leeds, United Kingdom
Recommended Citation:
Watson C.S.,Quincey D.J.,Carrivick J.L.,et al. The dynamics of supraglacial water storage in the Everest region, central Himalaya[J]. Global and Planetary Change,2016-01-01,142.