globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1912242117
论文题名:
Archaeological climate proxies and the complexities of reconstructing Holocene El Niño in coastal Peru
作者: Sandweiss D.H.; Fred T Andrus C.; Kelley A.R.; Maasch K.A.; Reitz E.J.; Roscoe P.B.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:15
起始页码: 8271
结束页码: 8279
语种: 英语
英文关键词: Archaeology ; Climate proxies ; El Niño ; Holocene ; Peru
Scopus关键词: archeology ; climate change ; consensus ; Holocene ; human ; longitudinal study ; paleoclimate ; Peru ; reliability ; review ; seashore ; article
英文摘要: Archaeological evidence plays a key role in longitudinal studies of humans and climate. Climate proxy data from Peruvian archaeological sites provide a case study through insight into the history of the “flavors” or varieties of El Niño (EN) events after ∼11 ka: eastern Pacific EN, La Niña, coastal EN (COA), and central Pacific or Modoki EN (CP). Archaeological proxies are important to the coastal Peruvian case because more commonly used paleoclimate proxies are unavailable or equivocal. Previously, multiproxy evidence from the Peruvian coast and elsewhere suggested that EN frequency varied over the Holocene: 1) present in the Early Holocene; 2) absent or very low frequency during the Middle Holocene (∼9 to 6 ka); 3) low after ∼6 ka; and 4) rapidly increasing frequency after 3 ka. Despite skepticism about the reliability of archaeological proxies, nonarchaeological proxies seemed to confirm this archaeological EN reconstruction. Although there is consensus that EN frequency varied over this period, some nonarchaeological and archaeological proxies call parts of this reconstruction into question. Here we review Holocene EN frequency reconstructions for the Peruvian coast, point to complexities introduced by apparent contradictions in a range of proxy records, consider the impact of CP and COA phenomena, and assess the merits of archaeological proxies in EN reconstructions. Reconciling Peruvian coastal paleoclimate data is critical for testing models of future EN behavior under climate variability. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164244
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作者单位: Sandweiss, D.H., Department of Anthropology, University of Maine, Orono, ME 04469, United States, Climate Change Institute, University of Maine, Orono, ME 04469, United States; Fred T Andrus, C., Department of Geological Sciences, University of Alabama, Tuscaloosa, AL 35487, United States; Kelley, A.R., Climate Change Institute, University of Maine, Orono, ME 04469, United States, School of Earth and Climate Sciences, University of Maine, Orono, ME 04469, United States; Maasch, K.A., Climate Change Institute, University of Maine, Orono, ME 04469, United States, School of Earth and Climate Sciences, University of Maine, Orono, ME 04469, United States; Reitz, E.J., Georgia Museum of Natural History, University of Georgia, Athens, GA 30602, United States; Roscoe, P.B., Department of Anthropology, University of Maine, Orono, ME 04469, United States, Climate Change Institute, University of Maine, Orono, ME 04469, United States

Recommended Citation:
Sandweiss D.H.,Fred T Andrus C.,Kelley A.R.,et al. Archaeological climate proxies and the complexities of reconstructing Holocene El Niño in coastal Peru[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(15)
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