Climate at the time of the Human settlement the Eastern Pacific

人类定居东太平洋时的气候

• 批准号: 2875445
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2875445
• 关键词: Climate; time; Human; settlement; Eastern

The migration into the Pacific Ocean and the settlement of island archipelagoes by the ancestors of modern pacific islanders is contested, yet remains one of humankinds greatest achievements. Evidence for when and why people chose to undertake hazardous voyages in large wooden voyaging canoes is uncertain, however recent hypotheses developed in part by the Supervisory team, point to a coincidence with a widespread regional drought - the largest I the past 2000 years (Sear et al., 2020). What we are less certain of is what role climate played in driving the migrations east into Polynesia and how it supported those migrations - were they in effect "chasing the rain" east as drought developed in the west? What is also unclear is the extent of this drought and the detail of its duration around the region settled by the Polynesian voyagers. To understand this requires robust dated sediment archives containing both unequivocal evidence for human arrival and presence, and hydroclimate proxies. This project will seek to develop these for three islands in French Polynesia and combine the new records with existing evidence from other regions of the Pacific to understand the temporal and spatial coincidence of climate and human migration.

现代太平洋岛民的祖先迁移到太平洋和岛屿群岛的定居点受到争议，但仍然是人类最大的成就之一。人们选择何时以及为什么选择在大型木制航行独木舟中进行危险航行的证据尚不确定，但是最近的假设部分由监督团队提出，这表明与广泛的地区干旱（过去2000年最大的I最大的I地区）相吻合（Sear等，2020年）。我们不太确定的是气候在将迁移向东移动到波利尼西亚以及如何支持这些迁移方面扮演着什么作用 - 它们实际上是像西方干旱一样“追逐雨水”的东方？尚不清楚的是，这种干旱的程度及其在波利尼西亚航海家定居的地区持续时间的细节。为了理解这一点，需要有稳固的日期沉积物档案，既包含人类到达和存在的明确证据，又有氢化气候代理。该项目将寻求为法属波利尼西亚的三个岛屿开发这些项目，并将新记录与太平洋其他地区的现有证据相结合，以了解气候和人类移民的时间和空间巧合。