DOI: 10.1016/j.quascirev.2014.06.019
Scopus记录号: 2-s2.0-84903648417
论文题名: Climate in the Western Cordillera of the Central Andes over the last 4300 years
作者: Engel Z. ; Skrzypek G. ; Chuman T. ; Šefrna L. ; Mihaljevič M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 99 起始页码: 60
结束页码: 77
语种: 英语
英文关键词: Distichia peat
; Late Holocene
; Palaeoclimate
; Peruvian Andes
; South America
; Stable isotope
Scopus关键词: Climate change
; Isotopes
; Temperature distribution
; Late Holocene
; Palaeoclimate
; Peruvian Andes
; South America
; Stable isotopes
; Peat
; carbon isotope
; climate variation
; cordillera
; Holocene
; isotopic composition
; paleoclimate
; paleotemperature
; peat
; regional climate
; stable isotope
; Andes
; Cordillera Occidental [Andes]
; Peru
; South America
英文摘要: The Distichia peat core obtained in the Carhuasanta valley near Nevado Mismi, Cordillera Chila, provides information on climatic and environmental conditions over the last ~4300 years. The relative changes in the stable carbon isotope composition of plant remains preserved in the core reflect major temperature fluctuations in the Western Cordillera of the southern Peruvian Andes. These temperature variations can be additionally linked with the changes in precipitation patterns by analysing C% and C/N ratio in the core. Relatively warm and moist conditions prevailed from 4280 to 3040cal.yrsBP (BC 2330-1090) with a short colder dry episode around 3850cal.yrsBP (BC 1900). The most prominent climate changes recorded in the peat occurred between 3040 and 2750cal.yrsBP (BC 1090-800) when the initial warming turned to a rapid cooling to temperatures at least 2°C lower than the mean for the Late Holocene. Initially drier conditions within this event turned to a short wet phase after 2780cal.yrsBP (BC 830) when the temperature increased again. This event coincides with significant changes in peat and ice core records in the Central Andes matching the timing of the global climate event around 2.8cal.ka BP. Climatic conditions in the study area became relatively dry and stable after the event for about 800 years. Highly variable temperatures and humidity prevailed during the last 2000 years when an extended warm and relatively humid period occurred between 640 and 155cal.yrsBP (AD 1310-1795) followed by predominantly colder and drier conditions. The established δ13C peat record represents the first continuous proxy for the temperature in the southern Peruvian Andes dated by the AMS 14C. Distichia peat is wide spread in the Andes and the proposed approach can be applied elsewhere in high altitudes, where no other traditional climate proxies are available. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60184
Appears in Collections: 过去全球变化的重建
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作者单位: Charles University in Prague, Faculty of Science, Department of Physical Geography and Geoecology, Albertov 6, 128 43 Praha 2, Czech Republic; University of Western Australia, West Australian Biogeochemistry Centre, John de Laeter Centre of Mass Spectrometry, School of Plant Biology M090, 35 Stirling Highway, Crawley, WA 6009, Australia; Charles University in Prague, Faculty of Science, Institute of Geochemistry, Mineralogy and Mineral Resources, Albertov 6, 128 43 Praha 2, Czech Republic
Recommended Citation:
Engel Z.,Skrzypek G.,Chuman T.,et al. Climate in the Western Cordillera of the Central Andes over the last 4300 years[J]. Quaternary Science Reviews,2014-01-01,99