DOI: 10.1002/2013GL058956
论文题名: Effects of Mackenzie River discharge and bathymetry on sea ice in the Beaufort Sea
作者: Nghiem S.V. ; Hall D.K. ; Rigor I.G. ; Li P. ; Neumann G.
刊名: Geophysical Research Letters
ISSN: 0094-10378
EISSN: 1944-10109
出版年: 2014
卷: 41, 期: 3 起始页码: 873
结束页码: 879
语种: 英语
英文关键词: Antarctic
; Arctic sea ice
; bathymetry
; Beaufort Sea
; Mackenzie River
; river discharge
Scopus关键词: Atmospheric temperature
; Bathymetry
; Melting
; Rivers
; Antarctic
; Arctic rivers
; Arctic sea ice
; Beaufort sea
; River discharge
; Sea surface temperature (SST)
; Shallow seafloor
; Surface temperatures
; Sea ice
; bathymetry
; fragmentation
; gyre
; open water
; river discharge
; river water
; satellite imagery
; sea ice
; sea surface temperature
; seafloor
; Arctic Ocean
; Beaufort Sea
; Canada
; Mackenzie Delta
; Northwest Territories
英文摘要: Mackenzie River discharge and bathymetry effects on sea ice in the Beaufort Sea are examined in 2012 when Arctic sea ice extent hit a record low. Satellite-derived sea surface temperature revealed warmer waters closer to river mouths. By 5 July 2012, Mackenzie warm waters occupied most of an open water area about 316,000 km2. Surface temperature in a common open water area increased by 6.5°C between 14 June and 5 July 2012, before and after the river waters broke through a recurrent landfast ice barrier formed over the shallow seafloor offshore the Mackenzie Delta. In 2012, melting by warm river waters was especially effective when the strong Beaufort Gyre fragmented sea ice into unconsolidated floes. The Mackenzie and other large rivers can transport an enormous amount of heat across immense continental watersheds into the Arctic Ocean, constituting a stark contrast to the Antarctic that has no such rivers to affect sea ice. Key Points Warm waters intrusion from the Mackenzie River discharge impacts sea ice melt Strong Beaufort Gyre fragmented sea ice to precondition andenhance melting Arctic rivers constitute the starkest contrast to Antarctic without such river ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893668305&doi=10.1002%2f2013GL058956&partnerID=40&md5=84bc2de6ae46c29a0f6de379be7350d1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7642
Appears in Collections: 气候减缓与适应
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Nghiem S.V.,Hall D.K.,Rigor I.G.,et al. Effects of Mackenzie River discharge and bathymetry on sea ice in the Beaufort Sea[J]. Geophysical Research Letters,2014-01-01,41(3).