globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1920975117
论文题名:
Human settlement of East Polynesia earlier; incremental; and coincident with prolonged South Pacific drought
作者: Sear D.A.; Allen M.S.; Hassall J.D.; Maloney A.E.; Langdon P.G.; Morrison A.E.; Henderson A.C.G.; Mackay H.; Croudace I.W.; Clarke C.; Sachs J.P.; Macdonald G.; Chiverrell R.C.; Leng M.J.; Cisneros-Dozal L.M.; Fonville T.
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:16
起始页码: 8813
结束页码: 8819
语种: 英语
英文关键词: Biomarkers ; Drought ; East Polynesian colonizationm ; Palaeoclimate ; Polynesian voyaging
Scopus关键词: algal lipid ; biological marker ; charcoal ; fresh water ; hydrogen ; lipid ; organic carbon ; rain ; sterol ; titanium ; unclassified drug ; wax ; agriculture ; alga ; anthropology ; Article ; carbon source ; climate change ; Cook Islands ; drought ; dry season ; earlier Human settlement ; East Polynesia ; El Nino ; feces analysis ; geographic distribution ; human ; hydroclimate ; incremental Human settlement ; Kiribati ; lake basin ; lake sediment ; magnetism ; migration ; nonhuman ; paleoclimate ; pig ; plant leaf ; Polynesia ; population dispersal ; priority journal ; prolonged drought ; quantitative analysis ; rainy season ; Samoa ; seasonal variation ; social change ; social evolution ; social problem ; soil erosion ; Tonga ; tool use ; trend study ; Vanuatu ; water supply ; archeology ; history ; lake ; migration ; Polynesia ; procedures ; sediment ; Archaeology ; Droughts ; Geologic Sediments ; History, Ancient ; Human Migration ; Humans ; Lakes ; Polynesia
英文摘要: The timing of human colonization of East Polynesia, a vast area lying between Hawai'i, Rapa Nui, and New Zealand, is much debated and the underlying causes of this great migration have been enigmatic. Our study generates evidence for human dispersal into eastern Polynesia from islands to the west from around AD 900 and contemporaneous paleoclimate data from the likely source region. Lake cores from Atiu, Southern Cook Islands (SCIs) register evidence of pig and/or human occupation on a virgin landscape at this time, followed by changes in lake carbon around AD 1000 and significant anthropogenic disturbance from c. AD 1100. The broader paleoclimate context of these early voyages of exploration are derived from the Atiu lake core and complemented by additional lake cores from Samoa (directly west) and Vanuatu (southwest) and published hydroclimate proxies from the Society Islands (northeast) and Kiribati (north). Algal lipid and leaf wax biomarkers allow for comparisons of changing hydroclimate conditions across the region before, during, and after human arrival in the SCIs. The evidence indicates a prolonged drought in the likely western source region for these colonists, lasting c. 200 to 400 y, contemporaneous with the phasing of human dispersal into the Pacific. We propose that drying climate, coupled with documented social pressures and societal developments, instigated initial eastward exploration, resulting in SCI landfall(s) and return voyaging, with colonization a century or two later. This incremental settlement process likely involved the accumulation of critical maritime knowledge over several generations. © 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/164233
Appears in Collections:气候变化与战略

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作者单位: Sear, D.A., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Allen, M.S., Anthropology, School of Social Sciences, University of Auckland, Auckland, 1142, New Zealand; Hassall, J.D., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Maloney, A.E., School of Oceanography, College of the Environment, University of Washington, Seattle, WA 98195, United States; Langdon, P.G., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Morrison, A.E., International Archaeology LLC, Honolulu, HI 96826, United States; Henderson, A.C.G., School of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom; Mackay, H., School of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom; Croudace, I.W., Geosciences Advisory Unit (GAU)-Radioanalytical, National Oceanography Centre, University of Southampton, Southampton, SO14 3ZH, United Kingdom; Clarke, C., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Sachs, J.P., School of Oceanography, College of the Environment, University of Washington, Seattle, WA 98195, United States; Macdonald, G., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Chiverrell, R.C., Department of Geography and Planning, School of Environmental Sciences, Liverpool University, Liverpool, L69 7ZT, United Kingdom; Leng, M.J., National Environmental Isotope Facility, British Geological Survey, Nottingham, NG12 5GG, United Kingdom, Centre for Environmental Geochemistry, School of Biosciences, University of Nottingham, Loughborough, LE12 5RD, United Kingdom; Cisneros-Dozal, L.M., National Environmental Isotope Facility, Radiocarbon Laboratory, Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, G75 0QF, United Kingdom; Fonville, T., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom

Recommended Citation:
Sear D.A.,Allen M.S.,Hassall J.D.,et al. Human settlement of East Polynesia earlier; incremental; and coincident with prolonged South Pacific drought[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(16)
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