DOI: 10.1016/j.quascirev.2017.12.006
Scopus记录号: 2-s2.0-85038023436
论文题名: Late-Middle Quaternary lithostratigraphy and sedimentation patterns on the Alpha Ridge, central Arctic Ocean: Implications for Arctic climate variability on orbital time scales
作者: Wang R. ; Polyak L. ; Xiao W. ; Wu L. ; Zhang T. ; Sun Y. ; Xu X.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 181 起始页码: 93
结束页码: 108
语种: 英语
英文关键词: Arctic Ocean
; Beaufort Gyre
; Depositional regime
; Orbital tuning
; Sediment stratigraphy
; Transpolar Drift
; XRF data
Scopus关键词: Calcium
; Climate change
; Glacial geology
; Manganese
; Sea ice
; Sea level
; Stratigraphy
; Arctic ocean
; Beaufort Gyre
; Depositional regime
; Orbital tuning
; Transpolar Drift
; XRF data
; Oceanography
; biostratigraphy
; climate variation
; depositional environment
; gyre
; lithostratigraphy
; orbital forcing
; paleoceanography
; paleoclimate
; proxy climate record
; Quaternary
; reconstruction
; sediment core
; sedimentation
; sequence stratigraphy
; stable isotope
; timescale
; Alpha Ridge
; Arctic Ocean
; Beaufort Sea
英文摘要: We use sediment cores collected by the Chinese National Arctic Research Expeditions from the Alpha Ridge to advance Quaternary stratigraphy and paleoceanographic reconstructions for the Arctic Ocean. Our cores show a good litho/biostratigraphic correlation to sedimentary records developed earlier for the central Arctic Ocean, suggesting a recovered stratigraphic range of ca. 0.6 Ma, suitable for paleoclimatic studies on orbital time scales. This stratigraphy was tested by correlating the stacked Alpha Ridge record of bulk XRF manganese, calcium and zirconium (Mn, Ca, Zr), to global stable-isotope (LR04-δ18O) and sea-level stacks and tuning to orbital parameters. Correlation results corroborate the applicability of presumed climate/sea-level controlled Mn variations in the Arctic Ocean for orbital tuning. This approach enables better understanding of the global and orbital controls on the Arctic climate. Orbital tuning experiments for our records indicate strong eccentricity (100-kyr) and precession (∼20-kyr) controls on the Arctic Ocean, probably implemented via glaciations and sea ice. Provenance proxies like Ca and Zr are shown to be unsuitable as orbital tuning tools, but useful as indicators of glacial/deglacial processes and circulation patterns in the Arctic Ocean. Their variations suggest an overall long-term persistence of the Beaufort Gyre circulation in the Alpha Ridge region. Some glacial intervals, e.g., MIS 6 and 4/3, are predominated by material presumably transported by the Transpolar Drift. These circulation shifts likely indicate major changes in the Arctic climatic regime, which yet need to be investigated. Overall, our results demonstrate applicability of XRF data to paleoclimatic studies of the Arctic Ocean. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112311
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Marine Geology, Tongji University, Shanghai, 200092, China; Byrd Polar and Climate Research Center, The Ohio State University, Columbus, OH 43210, United States; Earth System Science, University of California, Irvine, CA 92697-3100, United States
Recommended Citation:
Wang R.,Polyak L.,Xiao W.,et al. Late-Middle Quaternary lithostratigraphy and sedimentation patterns on the Alpha Ridge, central Arctic Ocean: Implications for Arctic climate variability on orbital time scales[J]. Quaternary Science Reviews,2018-01-01,181