DOI: 10.1016/j.quascirev.2013.03.003
Scopus记录号: 2-s2.0-84876331755
论文题名: Proglacial lake sediment records of Holocene climate change in the western Cordillera of Peru
作者: Stansell N.D. ; Rodbell D.T. ; Abbott M.B. ; Mark B.G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 70 起始页码: 1
结束页码: 14
语种: 英语
英文关键词: Glacial flour
; Glacier mass-balance
; Late Quaternary
; Southern tropical Andes
Scopus关键词: Glacial flour
; Holocene climate change
; Intertropical convergence zone
; Late quaternary
; Mass balance
; Medieval climate anomalies
; Sea surface temperature distribution
; Tropical Andes
; Atmospheric temperature
; Atmospheric thermodynamics
; Climate change
; Glacial geology
; Ice
; Lakes
; Lasers
; Sedimentology
; Tropics
; Sediments
; air temperature
; climate variation
; depositional environment
; glacier advance
; glacier retreat
; Holocene
; ice cover
; ice retreat
; lacustrine deposit
; Northern Hemisphere
; paleoclimate
; Postglacial
; proxy climate record
; sea surface temperature
; speleothem
; Atlantic Ocean
; Cordillera Occidental [Peru]
; Pacific Ocean
; Pacific Ocean (Tropical)
; Peru
英文摘要: Sediment records from proglacial lakes between 9 and 10°S in the western Cordillera of the Peruvian Andes document the waxing and waning of alpine glaciers since the end of the Lateglacial stage. These records from the southern tropical Andes provide supporting evidence that the early Holocene (between 12 and 8ka) was relatively warm and dry, and the middle Holocene (between 8 and 4ka) was marked by a shift to cooler, and possibly wetter conditions in certain regions, leading to glacial advances. Although there were multiple periods of brief ice advances that interrupted the overall trend, glaciers in multiple valleys generally retreated from ~4.0ka through the Medieval Climate Anomaly (1.0-0.7ka). This late Holocene pattern of ice retreat occurred during a period when lake level studies, and both lacustrine and speleothem stable isotopic records indicate wetter conditions relative to the middle Holocene, suggesting that higher temperatures contributed to the pattern of ice retreat. Following this period of glacial retreat, multiple proxy records suggest that the start of the Little Ice Age (~0.6-0.1ka) was a colder and wetter time throughout much of the tropical Andes. There appear to be two primary synoptic-scale climatic controls on temperature and precipitation linked to insolation dynamics that drive changes in ice cover in the southern tropical Andes during the Holocene: 1) the strength of the South America Summer Monsoon, which is linked to Northern Hemisphere temperatures and the mean position of the Intertropical Convergence Zone over the Atlantic, and 2) sea surface temperature distributions in the tropical Pacific Ocean and its influence on atmospheric temperature, precipitation and circulation patterns. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60632
Appears in Collections: 过去全球变化的重建
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作者单位: Byrd Polar Research Center, The Ohio State University, Scott Hall, 1090 Carmack Road, Columbus, OH 43210, United States; Geology Department, Union College, Schenectady, NY 12308, United States; Department of Geology and Planetary Science, University of Pittsburgh, 4107 O'Hara St., Pittsburgh, PA 15260, United States; Department of Geography, The Ohio State University, 1036 Derby Hall, Columbus, OH 43210, United States
Recommended Citation:
Stansell N.D.,Rodbell D.T.,Abbott M.B.,et al. Proglacial lake sediment records of Holocene climate change in the western Cordillera of Peru[J]. Quaternary Science Reviews,2013-01-01,70