DOI: 10.1016/j.quascirev.2014.03.022
Scopus记录号: 2-s2.0-84900435754
论文题名: The dynamic Arctic
作者: Jakobsson M. ; Ingólfsson T. ; Long A.J. ; Spielhagen R.F.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 92 起始页码: 1
结束页码: 8
语种: 英语
Scopus关键词: Climate change
; Feedback control
; Glaciers
; Sea ice
; Sea level
; Chaotic behaviour
; Driving mechanism
; Feedback mechanisms
; Ice sheet dynamics
; Interglacial periods
; Rapid transitions
; Spatial and temporal changes
; Static environment
; Research
; climate change
; cryosphere
; data set
; ice sheet
; interglacial
; research
; sea ice
; sea level
; timescale
; Arctic
英文摘要: Research campaigns over the last decade have yielded a growing stream of data that highlight the dynamic nature of Arctic cryosphere and climate change over a range of time scales. As a consequence, rather than seeing the Arctic as a near static environment in which large scale changes occur slowly, we now view the Arctic as a system that is typified by frequent, large and abrupt changes. The traditional focus on end members in the system - glacial versus interglacial periods - has been replaced by a new interest in understanding the patterns and causes of such dynamic change. Instead of interpreting changes almost exclusively as near linear responses to external forcing (e.g. orbitally-forced climate change), research is now concentrated on the importance of strong feedback mechanisms that in our palaeo-archives often border on chaotic behaviour. The last decade of research has revealed the importance of on-off switching of ice streams, strong feedbacks between sea level and ice sheets, spatial and temporal changes in ice shelves and perennial sea ice, as well as alterations in ice sheet dynamics caused by shifting centres of mass in multi-dome ice sheets. Recent advances in dating techniques and modelling have improved our understanding of leads and lags that exist in different Arctic systems, on their interactions and the driving mechanisms of change. Future Arctic research challenges include further emphases on rapid transitions and untangling the feedback mechanisms as well as the time scales they operate on. © 2014 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60295
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geological Sciences, Stockholm University, 106 91 Stockholm, Sweden; University of Iceland, Iceland; University Centre in Svalbard (UNIS), Norway; Department of Geography, Durham University, Lower Mountjoy, South Road, Durham DH1 3LE, United Kingdom; Academy of Sciences, Humanities and Literature, Mainz and GEOMAR Helmholtz Centre of Ocean Research, Wischhofstr.1-3, D-24148 Kiel, Germany
Recommended Citation:
Jakobsson M.,Ingólfsson T.,Long A.J.,et al. The dynamic Arctic[J]. Quaternary Science Reviews,2014-01-01,92