DOI: 10.5194/tc-11-157-2017
Scopus记录号: 2-s2.0-85010332813
论文题名: Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada)
作者: Barrand N ; E ; , Way R ; G ; , Bell T ; , Sharp M ; J
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 1 起始页码: 157
结束页码: 168
语种: 英语
英文关键词: arctic environment
; cirque
; climate change
; deglaciation
; environmental impact assessment
; field survey
; glacier mass balance
; glaciology
; remote sensing
; warming
; Canada
; Labrador
; Newfoundland and Labrador
; Torngat Mountains
英文摘要: The Torngat Mountains National Park, northern Labrador, Canada, contains more than 120 small glaciers: the only remaining glaciers in continental northeast North America. These small cirque glaciers exist in a unique topo-climatic setting, experiencing temperate maritime summer conditions yet very cold and dry winters, and may provide insights into the deglaciation dynamics of similar small glaciers in temperate mountain settings. Due to their size and remote location, very little information exists regarding the health of these glaciers. Just a single study has been published on the contemporary glaciology of the Torngat Mountains, focusing on net mass balances from 1981 to 1984. This paper addresses the extent to which glaciologically relevant climate variables have changed in northern Labrador in concert with 20th-century Arctic warming, and how these changes have affected Torngat Mountain glaciers. Field surveys and remote-sensing analyses were used to measure regional glacier area loss of 27% from 1950 to 2005, substantial rates of ice surface thinning (up to 6mg-1) and volume losses at Abraham, Hidden, and Minaret glaciers, between 2005 and 2011. Glacier mass balances appear to be controlled by variations in winter precipitation and, increasingly, by strong summer and autumn atmospheric warming since the early 1990s, though further observations are required to fully understand mass balance sensitivities. This study provides the first comprehensive contemporary assessment of Labrador glaciers and will inform both regional impact assessments and syntheses of global glacier mass balance. © 2017 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75617
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: School of Geography Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Geography, University of Ottawa, Ottawa, Canada; Department of Geography, Memorial University of Newfoundland, St. John's, Canada; Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Canada
Recommended Citation:
Barrand N,E,, Way R,et al. Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada)[J]. Cryosphere,2017-01-01,11(1)