DOI: 10.1016/j.quascirev.2016.02.011
Scopus记录号: 2-s2.0-84959235936
论文题名: Glacial isostatic adjustment associated with the Barents Sea ice sheet: A modelling inter-comparison
作者: Auriac A. ; Whitehouse P.L. ; Bentley M.J. ; Patton H. ; Lloyd J.M. ; Hubbard A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 147 起始页码: 122
结束页码: 135
语种: 英语
英文关键词: Barents Sea
; Glacial isostatic adjustment modelling
; Ice sheet
; Relative sea level
Scopus关键词: Glaciers
; Ice
; Sea ice
; Sea level
; Tectonics
; Viscosity
; Barents sea
; Earth system model
; Glacial Isostatic Adjustments
; Ice sheet
; Ice sheet modelling
; Lower mantle viscosities
; Relative sea level
; Upper mantle viscosity
; Glacial geology
; chronology
; glacier retreat
; glacioisostasy
; GPS
; ice sheet
; lithosphere
; satellite data
; sea level change
; three-dimensional modeling
; upper mantle
; Arctic
; Arctic Ocean
; Arkhangelsk [Russian Federation]
; Barents Sea
; Franz Josef Land
; Norway
; Novaya Zemlya
; Russian Federation
; Svalbard
; Svalbard and Jan Mayen
英文摘要: The 3D geometrical evolution of the Barents Sea Ice Sheet (BSIS), particularly during its late-glacial retreat phase, remains largely ambiguous due to the paucity of direct marine- and terrestrial-based evidence constraining its horizontal and vertical extent and chronology. One way of validating the numerous BSIS reconstructions previously proposed is to collate and apply them under a wide range of Earth models and to compare prognostic (isostatic) output through time with known relative sea-level (RSL) data. Here we compare six contrasting BSIS load scenarios via a spherical Earth system model and derive a best-fit, χ2 parameter using RSL data from the four main terrestrial regions within the domain: Svalbard, Franz Josef Land, Novaya Zemlya and northern Norway. Poor χ2 values allow two load scenarios to be dismissed, leaving four that agree well with RSL observations. The remaining four scenarios optimally fit the RSL data when combined with Earth models that have an upper mantle viscosity of 0.2–2 × 1021 Pa s, while there is less sensitivity to the lithosphere thickness (ranging from 71 to 120 km) and lower mantle viscosity (spanning 1–50 × 1021 Pa s). GPS observations are also compared with predictions of present-day uplift across the Barents Sea. Key locations where relative sea-level and GPS data would prove critical in constraining future ice-sheet modelling efforts are also identified. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59505
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geography, Durham University, South Road, Durham, United Kingdom; CAGE – Centre for Arctic Gas Hydrate, Environment and Climate, Department of Geology, UiT The Arctic University of Norway, Tromsø, Norway
Recommended Citation:
Auriac A.,Whitehouse P.L.,Bentley M.J.,et al. Glacial isostatic adjustment associated with the Barents Sea ice sheet: A modelling inter-comparison[J]. Quaternary Science Reviews,2016-01-01,147