globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.05.023
Scopus记录号: 2-s2.0-84978924823
论文题名:
Holocene changes in monsoon precipitation in the Andes of NE Peru based on δ18O speleothem records
作者: Bustamante M.G.; Cruz F.W.; Vuille M.; Apaéstegui J.; Strikis N.; Panizo G.; Novello F.V.; Deininger M.; Sifeddine A.; Cheng H.; Moquet J.S.; Guyot J.L.; Santos R.V.; Segura H.; Edwards R.L.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 146
起始页码: 274
结束页码: 287
语种: 英语
英文关键词: Holocene ; Northeastern Peruvian Andes ; Paleoclimate ; South American Summer Monsoon ; Speleothem ; Stable isotopes
Scopus关键词: Atmospheric temperature ; Drought ; Oceanography ; Surface waters ; Holocenes ; Northeastern Peruvian Andes ; Paleoclimates ; Speleothem ; Stable isotopes ; Summer monsoon ; Atmospheric thermodynamics ; climate variation ; insolation ; monsoon ; oxygen isotope ; Pleistocene-Holocene boundary ; precession ; sea surface temperature ; sediment transport ; speleothem ; stable isotope ; summer ; Andes ; Atlantic Ocean ; Atlantic Ocean (North) ; Ecuador ; Peru
英文摘要: Two well-dated δ18O-speleothem records from Shatuca cave, situated on the northeastern flank of the Peruvian Andes (1960 m asl) were used to reconstruct high-resolution changes in precipitation during the Holocene in the South American Summer Monsoon region (SASM). The records show that precipitation increased gradually throughout the Holocene in parallel with the austral summer insolation trend modulated by the precession cycle. Additionally the Shatuca speleothem record shows several hydroclimatic changes on both longer- and shorter-term time scales, some of which have not been described in previous paleoclimatic reconstructions from the Andean region. Such climate episodes, marked by negative excursions in the Shatuca δ18O record were logged at 9.7–9.5, 9.2, 8.4, 8.1, 5.0, 4.1, 3.5, 3.0, 2.5, 2.1 and 1.5 ka b2k, and related to abrupt multi-decadal events in the SASM. Some of these events were likely associated with changes in sea surface temperatures (SST) during Bond events in the North Atlantic region. On longer time scales, the low δ18O values reported between 5.1-5.0, 3.5–3.0 and 1.5 ka b2k were contemporaneous with periods of increased sediment influx at Lake Pallcacocha in the Andes of Ecuador, suggesting that the late Holocene intensification of the monsoon recorded at Shatuca site may also have affected high altitudes of the equatorial Andes further north. Numerous episodes of low SASM intensity (dry events) were recorded by the Shatuca record during the Holocene, in particular at 10.2, 9.8, 9.3, 6.5, 5.1, 4.9, 2.5 and 2.3 ka b2k, some of them were synchronous with dry periods in previous Andean records. © 2016 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59530
Appears in Collections:过去全球变化的重建

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作者单位: Universidade de São Paulo, Instituto de Geociências, Rua do Lago 562, São Paulo, Brazil; LMI PALEOTRACES (IRD, UPMC, UFF, Uantof, UPCH), Departamento de Geoquímica, Universidade Federal Fluminense, Niteroi, RJ, Brazil; Department of Atmospheric and Environmental Sciences, University at Albany (SUNY), Albany, NY, United States; Instituto Geofísico del PerúLima, Peru; Departamento de Geoquímica, Universidade Federal Fluminense, Niteroi, RJ, Brazil; Instituto de Matemática y Ciencias Afines, Universidad Nacional de IngenieríaLima, Peru; UCD School of Earth Sciences, Universtiy College Dublin, Belfield, Dublin 4, Ireland; GET, HYBAM (IRD-CNRS-UPS Toulouse), IRDLima, Peru; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China; Department of Earth Sciences, University of Minnesota, Minneapolis, MN, United States; Universidade de Brasília, Instituto de Geociências, Campus Universitário Darcy Ribeiro, Brasília, Brazil

Recommended Citation:
Bustamante M.G.,Cruz F.W.,Vuille M.,et al. Holocene changes in monsoon precipitation in the Andes of NE Peru based on δ18O speleothem records[J]. Quaternary Science Reviews,2016-01-01,146
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