DOI: 10.1016/j.quascirev.2014.05.022
Scopus记录号: 2-s2.0-84903785316
论文题名: Post-glacial sea-level change along the Pacific coast of North America
作者: Shugar D.H. ; Walker I.J. ; Lian O.B. ; Eamer J.B.R. ; Neudorf C. ; McLaren D. ; Fedje D.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 97 起始页码: 170
结束页码: 192
语种: 英语
英文关键词: Cascadia
; Coastal geomorphology
; Holocene glaciation
; Isostasy
; Neotectonics
; Relative sea level
Scopus关键词: Geodesy
; Glacial geology
; Glaciers
; Structural geology
; Tectonics
; Cascadia
; Holocene glaciations
; Isostasy
; Neotectonics
; Relative sea level
; Sea level
; eustacy
; global ocean
; ice sheet
; Last Glacial Maximum
; Postglacial
; spatiotemporal analysis
; tectonic setting
; Pacific Coast [North America]
英文摘要: Sea-level history since the Last Glacial Maximum on the Pacific margin of North America is complex and heterogeneous owing to regional differences in crustal deformation (neotectonics), changes in global ocean volumes (eustasy) and the depression and rebound of the Earth's crust in response to ice sheets on land (isostasy). At the Last Glacial Maximum, the Cordilleran Ice Sheet depressed the crust over which it formed and created a raised forebulge along peripheral areas offshore. This, combined with different tectonic settings along the coast, resulted in divergent relative sea-level responses during the Holocene. For example, sea level was up to 200m higher than present in the lower Fraser Valley region of southwest British Columbia, due largely to isostatic depression. At the same time, sea level was 150m lower than present in Haida Gwaii, on the northern coast of British Columbia, due to the combined effects of the forebulge raising the land and lower eustatic sea level. A forebulge also developed in parts of southeast Alaska resulting in post-glacial sea levels at least 122m lower than present and possibly as low as 165m. On the coasts of Washington and Oregon, as well as south-central Alaska, neotectonics and eustasy seem to have played larger roles than isostatic adjustments in controlling relative sea-level changes. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60223
Appears in Collections: 过去全球变化的重建
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作者单位: Coastal Erosion and Dune Dynamics Laboratory, Department of Geography, University of Victoria, Victoria, BC, Canada; Department of Geography, University of the Fraser Valley, Abbotsford, BC, Canada; Department of Anthropology, University of Victoria, Victoria, BC, Canada; Hakai Beach Institute, Calvert Island, BC, Canada
Recommended Citation:
Shugar D.H.,Walker I.J.,Lian O.B.,et al. Post-glacial sea-level change along the Pacific coast of North America[J]. Quaternary Science Reviews,2014-01-01,97