DOI: 10.5194/tc-11-169-2017
Scopus记录号: 2-s2.0-85010930849
论文题名: Rapid wastage of the Hazen Plateau ice caps, northeastern Ellesmere Island, Nunavut, Canada
作者: Serreze M ; C ; , Raup B ; , Braun C ; , Hardy D ; R ; , Bradley R ; S
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 1 起始页码: 169
结束页码: 177
语种: 英语
英文关键词: aerial photography
; ASTER
; elevation
; GPS
; ice cap
; ice retreat
; Little Ice Age
; satellite data
; shrinkage
; spatiotemporal analysis
; Canada
; Ellesmere Island
; Nunavut
; Queen Elizabeth Islands
; Queen Elizabeth Islands
英文摘要: Two pairs of small stagnant ice bodies on the Hazen Plateau of northeastern Ellesmere Island, the St. Patrick Bay ice caps and the Murray and Simmons ice caps, are rapidly shrinking, and the remnants of the St. Patrick Bay ice caps are likely to disappear entirely within the next 5 years. Vertical aerial photographs of these Little Ice Age relics taken during August of 1959 show that the larger of the St. Patrick Bay ice caps had an area of 7.48 km2 and the smaller one 2.93 km2; the Murray and Simmons ice caps covered 4.37 and 7.45 km2 respectively. Outlines determined from ASTER satellite data for July 2016 show that, compared to 1959, the larger and the smaller of the St. Patrick Bay ice caps had both been reduced to only 5 % of their former area, with the Murray and Simmons ice caps faring better at 39 and 25 %, likely reflecting their higher elevation. Consistent with findings from other glaciological studies in the Queen Elizabeth Islands, ASTER imagery in conjunction with past GPS surveys documents a strikingly rapid wastage of the St. Patrick Bay ice caps over the last 15 years. These two ice caps shrank noticeably even between 2014 and 2015, apparently in direct response to the especially warm summer of 2015 over northeastern Ellesmere Island. The well-documented recession patterns of the Hazen Plateau ice caps over the last 55+ years offer an opportunity to examine the processes of plant recolonization of polar landscapes. © 2017 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75615
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: Department of Geography, Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Geography and Regional Planning/Environmental Science, Westfield State University, Westfield, MA, United States; Department of Geosciences, University of Massachusetts, Amherst, MA, United States
Recommended Citation:
Serreze M,C,, Raup B,et al. Rapid wastage of the Hazen Plateau ice caps, northeastern Ellesmere Island, Nunavut, Canada[J]. Cryosphere,2017-01-01,11(1)