DOI: 10.1016/j.quascirev.2012.12.010
Scopus记录号: 2-s2.0-84885949259
论文题名: A 600-ka Arctic sea-ice record from Mendeleev Ridge based on ostracodes
作者: Cronin T.M. ; Polyak L. ; Reed D. ; Kandiano E.S. ; Marzen R.E. ; Council E.A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 79 起始页码: 157
结束页码: 167
语种: 英语
英文关键词: Arctic paleoceanography
; Arctic sea ice
; Marine Isotope Stage 11
; Ostracodes
Scopus关键词: Arctic sea ice
; Foraminiferal assemblages
; Marine isotope stages
; Mid-depth ocean
; Ostracodes
; Paleoceanography
; Sedimentation rates
; Surface ocean productivity
; Glacial geology
; Isotopes
; Sea ice
; Spectrum analysis
; Stratigraphy
; Oceanography
; benthos
; biostratigraphy
; dominance
; environmental change
; foraminifera
; glacial-interglacial cycle
; marine isotope stage
; ostracod
; paleoceanography
; photic zone
; reconstruction
; sea ice
; sediment core
; sedimentation rate
; Arctic Ocean
; Mendeleyev Ridge
; Acetabulastoma
; Foraminifera
; Ostracoda
; Turborotalita
英文摘要: Arctic paleoceanography and sea-ice history were reconstructed from epipelagic and benthic ostracodes from a sediment core (HLY0503-06JPC, 800m water depth) located on the Mendeleev Ridge, Western Arctic Ocean. The calcareous microfaunal record (ostracodes and foraminifers) covers several glacial/interglacial cycles back to estimated Marine Isotope Stage 13 (MIS 13, ~500ka) with an average sedimentation rate of ~0.5cm/ka for most of the stratigraphy (MIS 5-13). Results based on ostracode assemblages and an unusual planktic foraminiferal assemblage in MIS 11 dominated by a temperate-water species Turborotalita egelida show that extreme interglacial warmth, high surface ocean productivity, and possibly open ocean convection characterized MIS 11 and MIS 13 (~400 and 500ka, respectively). A major shift in western Arctic Ocean environments toward perennial sea ice occurred after MIS 11 based on the distribution of an ice-dwelling ostracode Acetabulastoma arcticum. Spectral analyses of the ostracode assemblages indicate sea ice and mid-depth ocean circulation in western Arctic Ocean varied primarily at precessional (~22ka) and obliquity (~40ka) frequencies. © 2012. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60476
Appears in Collections: 过去全球变化的重建
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作者单位: MS 926A, U.S. Geological Survey, Reston, VA 20192, United States; Byrd Polar Research Center, Ohio State University, 1090 Carmack Rd., Columbus, OH 43210, United States; GEOMAR, Wischhofstraße 1-3, 24148 Kiel, Germany; Department of Geological Sciences, Wright State University, Dayton, OH 45435, United States
Recommended Citation:
Cronin T.M.,Polyak L.,Reed D.,et al. A 600-ka Arctic sea-ice record from Mendeleev Ridge based on ostracodes[J]. Quaternary Science Reviews,2013-01-01,79