DOI: 10.1002/2015GL065224
论文题名: Observations of the summer breakup of an Arctic sea ice cover
作者: Arntsen A.E. ; Song A.J. ; Perovich D.K. ; Richter-Menge J.A.
刊名: Geophysical Research Letters
ISSN: 0094-8551
EISSN: 1944-8282
出版年: 2015
卷: 42, 期: 19 起始页码: 8057
结束页码: 8063
语种: 英语
英文关键词: breakup
; floe size distribution
; sea ice
Scopus关键词: Drop breakup
; Lakes
; Satellite imagery
; Sea ice
; Size distribution
; Applied stress
; Arctic sea ice
; Chukchi Sea
; Discrete element modeling
; High resolution imagery
; Marginal Ice Zone
; Quantitative result
; Thermodynamic behaviors
; Ice
; buoy system
; discrete element method
; floating ice
; ice breakup
; ice cover
; marginal ice zone
; mass balance
; observational method
; satellite imagery
; sea ice
; shape
; size distribution
; spatiotemporal analysis
; summer
; thermodynamics
; Arctic Ocean
; Beaufort Sea
; Chukchi Sea
英文摘要: The Arctic sea ice cover evolves dramatically through the summer melt season. Floe size distribution (FSD) is a critical parameter used to examine this change as the ice cover transitions from large rectilinear plates in spring to an ensemble of discrete rounded floes by midsummer. The FSD at a given time impacts the dynamic and thermodynamic behavior of the ice cover. Focusing on the seasonal marginal ice zone in the Beaufort and Chukchi Seas from May to September 2014, we present qualitative and quantitative results derived from National Technical Means high-resolution imagery and supported by ice mass balance buoy data. Results indicate that as melt accelerates, floe breaking pattern, and therefore FSD, is heavily influenced by the distribution of melt ponds. Discrete element model results using morphological conditions derived from analyzed satellite imagery confirmed that breaking occurs along ponds and perpendicular to applied stress. Key Points Floe size distribution in the marginal ice zone is heavily impacted by summer thermodynamics A network of mature melt ponds acts as linked perforations facilitating floe breakup in summer In the MIZ, FSD changes by the removal of thin floes due to surface and bottom melting © 2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947021663&doi=10.1002%2f2015GL065224&partnerID=40&md5=409e462637a38663e96efd14b592a80c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8167
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: Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
Recommended Citation:
Arntsen A.E.,Song A.J.,Perovich D.K.,et al. Observations of the summer breakup of an Arctic sea ice cover[J]. Geophysical Research Letters,2015-01-01,42(19).