DOI: 10.1002/2015GL063960
论文题名: Laurentide-Cordilleran Ice Sheet saddle collapse as a contribution to meltwater pulse 1A
作者: Gomez N. ; Gregoire L.J. ; Mitrovica J.X. ; Payne A.J.
刊名: Geophysical Research Letters
ISSN: 0094-9469
EISSN: 1944-9200
出版年: 2015
卷: 42, 期: 10 起始页码: 3954
结束页码: 3962
语种: 英语
英文关键词: abrupt climate change
; cryosphere
; ice sheets
; meltwater pulse 1A
; paleoclimate
; sea level
Scopus关键词: Climate change
; Glaciers
; Sea level
; Abrupt climate change
; Cryosphere
; Ice sheet
; Meltwater pulse 1a
; Paleoclimates
; Ice
; climate variation
; collapse
; Cordilleran Ice Sheet
; cryosphere
; Last Glacial Maximum
; Laurentide Ice Sheet
; meltwater
; paleoceanography
; paleoclimate
; sea level change
; Arctic
; Greenland
; North America
英文摘要: The source or sources of meltwater pulse 1A (MWP-1A) at ∼14.5 ka, recorded at widely distributed sites as a sea level rise of ∼10-20 m in less than 500 years, is uncertain. A recent ice modeling study of North America and Greenland has suggested that the collapse of an ice saddle between the Laurentide and Cordilleran ice sheets, with a eustatic sea level equivalent (ESLE) of ∼10 m, may have been the dominant contributor to MWP-1A. To test this suggestion, we predict gravitationally self-consistent sea level changes from the Last Glacial Maximum to the present day associated with the ice model. We find that a combination of the saddle collapse scenario and melting outside North America and Greenland with an ESLE of ∼3 m yields sea level changes across MWP-1A that are consistent with far-field sea level records at Barbados, Tahiti, and Sunda Shelf. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931574268&doi=10.1002%2f2015GL063960&partnerID=40&md5=3cd268fbfe5bc9becd8b2ef0f1a60081
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9084
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: Center for Atmosphere Ocean Sciences, Courant Institute for Mathematical Sciences, New York University, New York, NY, United States
Recommended Citation:
Gomez N.,Gregoire L.J.,Mitrovica J.X.,et al. Laurentide-Cordilleran Ice Sheet saddle collapse as a contribution to meltwater pulse 1A[J]. Geophysical Research Letters,2015-01-01,42(10).