气候变化领域集成服务门户(CCPortal): Climate-forced sea-level lowstands in the Indian Ocean during the last two millennia

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DOI	10.1038/s41561-019-0503-7
	Climate-forced sea-level lowstands in the Indian Ocean during the last two millennia
	Kench P.S.; McLean R.F.; Owen S.D.; Ryan E.; Morgan K.M.; Ke L.; Wang X.; Roy K.
发表日期	2020
ISSN	17520894
卷号	13 期号:1
英文摘要	Sea-level reconstructions over the past two millennia provide a pre-industrial context to assess whether the magnitude and rate of modern sea-level change is unprecedented. Sea-level records from the Indian Ocean over the past 2,000 years are sparse, while records from the Atlantic and Pacific Oceans show variations less than 0.25 m and no significant negative excursions. Here, we present evidence of two low sea-level phases in the Maldives, Indian Ocean, based on fossil coral microatolls. Microatoll growth is constrained by low water levels and, consequently, they are robust recorders of past sea level. U–Th dating of the Maldivian corals identified lowstands at ad 234–605 and ad 1481–1807 when sea level fell to maximum depths of −0.88 m and −0.89 m respectively. These lowstands are synchronous with reductions in radiative forcing and sea surface temperature associated with the Late Antiquity Little Ice Age and the Little Ice Age. Our results provide high-fidelity observations of lower sea levels during these cool periods and show rates of change of up to 4.24 mm yr−1. Our data also confirm the acceleration of relative sea-level rise over the past two centuries and suggest that the current magnitude and rate of sea-level rise is not unprecedented. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Anthozoa
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124534
作者单位	Department of Earth Sciences, Simon Fraser University, Burnaby, BC, Canada; School of Science, University of New South Wales Canberra, Campbell, Australian Capital Territory, Australia; School of Resource and Environmental Management, Simon Fraser University, Burnaby, BC, Canada; School of Environment, University of Auckland, Auckland, New Zealand; Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore; Asian School of the Environment, Nanyang Technological University, Singapore, Singapore; Hiscox Group, London, United Kingdom
推荐引用方式 GB/T 7714	Kench P.S.,McLean R.F.,Owen S.D.,et al. Climate-forced sea-level lowstands in the Indian Ocean during the last two millennia[J],2020,13(1).
APA	Kench P.S..,McLean R.F..,Owen S.D..,Ryan E..,Morgan K.M..,...&Roy K..(2020).Climate-forced sea-level lowstands in the Indian Ocean during the last two millennia.Nature Geoscience,13(1).
MLA	Kench P.S.,et al."Climate-forced sea-level lowstands in the Indian Ocean during the last two millennia".Nature Geoscience 13.1(2020).