globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2014.12.001
Scopus记录号: 2-s2.0-85027946379
论文题名:
A sea-level database for the Pacific coast of central North America
作者: Engelhart S.E.; Vacchi M.; Horton B.P.; Nelson A.R.; Kopp R.E.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 113
起始页码: 78
结束页码: 92
语种: 英语
英文关键词: Cascadia subduction zone ; Glacial isostatic adjustment ; Holocene ; Pacific North America ; Sea-level database
Scopus关键词: Database systems ; Glacial geology ; Glaciers ; Stratigraphy ; Tectonics ; Archaeological investigation ; Cascadia subduction zone ; Cordilleran ice sheet ; Glacial Isostatic Adjustments ; Holocenes ; Laurentide ice sheets ; Mid to late Holocene ; Pacific-north america ; Sea level ; compaction ; Cordilleran Ice Sheet ; data management ; database ; deglaciation ; glaciation ; glacioisostasy ; highstand ; historical perspective ; Holocene ; meltwater ; paleoceanography ; radiocarbon dating ; sea level change ; stratigraphy ; subduction zone ; British Columbia ; California ; Canada ; Cascadia Subduction Zone ; Pacific Coast [North America] ; Pacific Ocean ; San Francisco [California] ; United States
英文摘要: A database of published and new relative sea-level (RSL) data for the past 16 ka constrains the sea-level histories of the Pacific coast of central North America (southern British Columbia to central California). Our reevaluation of the stratigraphic context and radiocarbon age of sea-level indicators from geological and archaeological investigations yields 600 sea-level index points and 241 sea-level limiting points. We subdivided the database into 12 regions based on the availability of data, tectonic setting, and distance from the former Cordilleran ice sheet. Most index (95%) and limiting points (54%) are <7 ka; older data come mainly from British Columbia and San Francisco Bay. The stratigraphic position of points was used as a first-order assessment of compaction. Formerly glaciated areas show variable RSL change; where data are present, highstands of RSL occur immediately post-deglaciation and in the mid to late Holocene. Sites at the periphery and distant to formerly glaciated areas demonstrate a continuous rise in RSL with a decreasing rate through time due to the collapse of the peripheral forebulge and the reduction in meltwater input during deglaciation. Late Holocene RSL change varies spatially from falling at 0.7 ± 0.8 mm a-1 in southern British Columbia to rising at 1.5 ± 0.3 mm a-1 in California. The different sea-level histories are an ongoing isostatic response to deglaciation of the Cordilleran and Laurentide Ice Sheets. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59977
Appears in Collections:过去全球变化的重建

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作者单位: Department of Geosciences, University of Rhode Island, Woodward Hall, Kingston, RI, United States; Aix-Marseille Université, CEREGE CNRS-IRD UMR 34, Europole de l'Arbois BP 80, Aix-en-Provence Cedex 4, France; Sea Level Research, Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, United States; Institute of Earth, Ocean and Atmospheric Sciences, Rutgers University, New Brunswick, NJ, United States; Division of Earth Sciences and Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore; Geologic Hazards Science Center, U.S. Geological Survey, Golden, CO, United States; Department of Earth and Planetary Sciences, Rutgers Energy Institute, Rutgers University, Piscataway, NJ, United States

Recommended Citation:
Engelhart S.E.,Vacchi M.,Horton B.P.,et al. A sea-level database for the Pacific coast of central North America[J]. Quaternary Science Reviews,2015-01-01,113
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