globalchange  > 气候变化与战略
DOI: 10.1038/s41561-019-0503-7
论文题名:
Climate-forced sea-level lowstands in the Indian Ocean during the last two millennia
作者: Kench P.S.; McLean R.F.; Owen S.D.; Ryan E.; Morgan K.M.; Ke L.; Wang X.; Roy K.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2020
卷: 13, 期:1
起始页码: 61
结束页码: 64
语种: 英语
英文关键词: Anthozoa
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169629
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Nature Geoscience,2020-01-01,13(1)
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