DOI: 10.1016/j.quascirev.2016.10.022
Scopus记录号: 2-s2.0-84995972675
论文题名: Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry
作者: Slabon P. ; Dorschel B. ; Jokat W. ; Myklebust R. ; Hebbeln D. ; Gebhardt C.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 154 起始页码: 182
结束页码: 198
语种: 英语
英文关键词: Baffin Bay
; Glacial landform
; Greenland
; Grounding-zone wedge
; Ice dome
; Ice-stream retreat
; Melville Bay
Scopus关键词: Bathymetry
; Domes
; Geomorphology
; Glacial geology
; Glaciers
; Landforms
; Stabilization
; Baffin Bay
; Glacial landforms
; Greenland
; Grounding-zone wedges
; Ice streams
; Melville Bay
; Ice
; continental shelf
; glacial landform
; grounding line
; ice mechanics
; ice retreat
; ice sheet
; ice stream
; moraine
; trough
; Arctic
; Arctic Ocean
; Baffin Bay [Arctic Ocean]
; Greenland
; Greenland
; Melville Bay
英文摘要: New swath-bathymetric data acquired in 2010 and 2015 indicate a variety of glacial landforms in cross-shelf troughs of the Melville Bay (northeast Baffin Bay). These landforms reveal that, at their maximum extent, ice streams in the troughs crossed the shelf all the way to the shelf edge. Moraines, grounding-zone wedges (GZWs) and subglacial till lobes on the continental shelf define a pattern of variable ice stream retreat in the individual troughs. On the outer shelf, in the northern cross-shelf trough, ice-stream retreat was slow compared to more episodic retreat in the central (at least one stabilization on the outer shelf) and southern cross-shelf trough (re-advances at the shelf edge and fast retreat thereafter). Large GZWs on the mid-to inner shelf of the troughs indicate periods of grounding-zone stabilization. According to glacial landforms, the final retreat across the inner shelf (before 8.41 ka BP) was episodic to slow. Furthermore, evidence has been found for localized ice domes with minor ice-streams on inter-trough banks. The glacial landforms in Melville Bay, thus, indicate the varying and discontinuous ice sheet retreat history across the Northwest Greenland continental shelf. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59373
Appears in Collections: 过去全球变化的重建
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作者单位: Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Alten Hafen 26, Bremerhaven, Germany; University of Bremen, Department of Geosciences, Klagenfurter Straße, Bremen, Germany; TGS, Lensmannslia 4, P.O. Box 154, Asker, Norway; MARUM, Center for Marine Environmental Sciences, University of Bremen, Leobener Strasse, Bremen, Germany
Recommended Citation:
Slabon P.,Dorschel B.,Jokat W.,et al. Greenland ice sheet retreat history in the northeast Baffin Bay based on high-resolution bathymetry[J]. Quaternary Science Reviews,2016-01-01,154