DOI: 10.5194/tc-7-1603-2013
Scopus记录号: 2-s2.0-84886050785
论文题名: Decadal changes from a multi-temporal glacier inventory of Svalbard
作者: Nuth C ; , Kohler J ; , König M ; , Von Deschwanden A ; , Hagen J ; O ; , Kääb A ; , Moholdt G ; , Pettersson R
刊名: Cryosphere
ISSN: 19940416
出版年: 2013
卷: 7, 期: 5 起始页码: 1603
结束页码: 1621
语种: 英语
英文关键词: cryosphere
; decadal variation
; frontal feature
; glacier retreat
; glaciology
; inventory
; tidewater glacier
; Arctic
; Spitsbergen
; Svalbard
; Svalbard and Jan Mayen
英文摘要: We present a multi-temporal digital inventory of Svalbard glaciers with the most recent from the late 2000s containing 33 775 km2 of glaciers covering 57% of the total land area of the archipelago. At present, 68% of the glacierized area of Svalbard drains through tidewater glaciers that have a total terminus width of ∼ 740 km. The glacierized area over the entire archipelago has decreased by an average of 80 km2 a-1over the past ∼ 30 yr, representing a reduction of 7%. For a sample of ∼ 400 glaciers (10 000 km2) in the south and west of Spitsbergen, three digital inventories are available from the 1930/60s, 1990 and 2007 from which we calculate average changes during 2 epochs. In the more recent epoch, the terminus retreat was larger than in the earlier epoch, while area shrinkage was smaller. The contrasting pattern may be explained by the decreased lateral wastage of the glacier tongues. Retreat rates for individual glaciers show a mix of accelerating and decelerating trends, reflecting the large spatial variability of glacier types and climatic/dynamic response times in Svalbard. Lastly, retreat rates estimated by dividing glacier area changes by the tongue width are larger than centerline retreat due to a more encompassing frontal change estimate with inclusion of lateral area loss. © 2013 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74932
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: Dept. of Geosciences, University of Oslo, Oslo, Norway; Norwegian Polar Institute, Tromsø, Norway; Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, San Deigo, CA, United States; Department of Earth Sciences, Uppsala University, Uppsala, Sweden
Recommended Citation:
Nuth C,, Kohler J,, König M,et al. Decadal changes from a multi-temporal glacier inventory of Svalbard[J]. Cryosphere,2013-01-01,7(5)