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https://hdl.handle.net/2440/122875
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Type: | Journal article |
Title: | Early human settlement of Sahul was not an accident |
Author: | Bird, M.I. Condie, S.A. O Connor, S. O Grady, D. Reepmeyer, C. Ulm, S. Zega, M. Saltré, F. Bradshaw, C.J.A. |
Citation: | Scientific Reports, 2019; 9(1):8220-1-8220-10 |
Publisher: | Springer Nature |
Issue Date: | 2019 |
ISSN: | 2045-2322 2045-2322 |
Statement of Responsibility: | Michael I. Bird, Scott A. Condie, Sue O’Connor, Damien O’Grady, Christian Reepmeyer, Sean Ulm, Mojca Zega, Frédérik Saltré, Corey J.A. Bradshaw |
Abstract: | The first peopling of Sahul (Australia, New Guinea and the Aru Islands joined at lower sea levels) by anatomically modern humans required multiple maritime crossings through Wallacea, with at least one approaching 100 km. Whether these crossings were accidental or intentional is unknown. Using coastal-viewshed analysis and ocean drift modelling combined with population projections, we show that the probability of randomly reaching Sahul by any route is <5% until ≥40 adults are 'washed off' an island at least once every 20 years. We then demonstrate that choosing a time of departure and making minimal headway (0.5 knots) toward a destination greatly increases the likelihood of arrival. While drift modelling demonstrates the existence of 'bottleneck' crossings on all routes, arrival via New Guinea is more likely than via northwestern Australia. We conclude that anatomically modern humans had the capacity to plan and make open-sea voyages lasting several days by at least 50,000 years ago. |
Keywords: | Humans Archaeology Australia New Guinea Oceans and Seas Human Migration |
Rights: | © The Author(s) 2019. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
DOI: | 10.1038/s41598-019-42946-9 |
Grant ID: | http://purl.org/au-research/grants/arc/CE170100015 http://purl.org/au-research/grants/arc/FL140100044 http://purl.org/au-research/grants/arc/FL120100156 http://purl.org/au-research/grants/arc/FT120100656 |
Published version: | http://dx.doi.org/10.1038/s41598-019-42946-9 |
Appears in Collections: | Aurora harvest 4 Earth and Environmental Sciences publications |
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