DOI: 10.1016/j.quascirev.2017.03.021
Scopus记录号: 2-s2.0-85016142038
论文题名: Past ice flow in Wahlenbergfjorden and its implications for late Quaternary ice sheet dynamics in northeastern Svalbard
作者: Flink A.E. ; Noormets R. ; Fransner O. ; Hogan K.A. ; ÓRegan M. ; Jakobsson M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 163 起始页码: 162
结束页码: 179
语种: 英语
英文关键词: Deglaciation
; Ice flow
; Multibeam-bathymetric data
; Submarine glacial landforms
; Surging glaciers
Scopus关键词: Bathymetry
; Flotation
; Geomorphology
; Glacial geology
; Glaciers
; Landforms
; Submarines
; Bathymetric data
; Deglaciations
; Glacial landforms
; Glacial lineation
; Ice flow
; Ice sheet dynamics
; Submarine landforms
; Terminal moraines
; Ice
英文摘要: Wahlenbergfjorden is a fjord situated in the western part of Nordaustlandet in northern Svalbard. It leads into the 400 m deep Hinlopen Strait located between Nordaustlandet and Spitsbergen. High-resolution multibeam bathymetric and sub-bottom data, as well as sediment cores are used to study the past extent and dynamics of glaciers in Wahlenbergfjorden and western Nordaustlandet. The submarine landform assemblage in Wahlenbergfjorden consists of landforms characteristic of subglacial, ice marginal and proglacial conditions. Glacial lineations indicate that Wahlenbergfjorden was occupied by streaming ice during the LGM and most likely acted as an ice stream onset zone. Westward ice flow in the fjord merged with the ice stream in Hinlopen Strait. Absence of ice recessional landforms in outer Wahlenbergfjorden suggests relatively fast deglaciation, possibly by flotation of the glacier front in the deeper parts of the fjord. The inner part of Wahlenbergfjorden and Palanderbukta are characterized by De Geer moraines, indicating episodic retreat of a grounded glacier front. In Palanderbukta, longer still stands of the glacier terminus resulted in the formation of larger terminal moraine ridges. The inner part of Wahlenbergfjorden was deglaciated prior to 11.3 ± 55 Cal. ka BP. The submarine landform assemblages in front of Bodleybreen, Etonbreen, Idunbreen, Frazerbreen and Aldousbreen confirm that these glaciers have surged at least once during the Holocene. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59261
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Arctic Geology, University Centre in Svalbard, Longyearbyen, Norway; British Antarctic Survey, Madingley Road, High Cross, Cambridge, United Kingdom; Department of Geological Sciences, Stockholm University, Stockholm, Sweden
Recommended Citation:
Flink A.E.,Noormets R.,Fransner O.,et al. Past ice flow in Wahlenbergfjorden and its implications for late Quaternary ice sheet dynamics in northeastern Svalbard[J]. Quaternary Science Reviews,2017-01-01,163