Half-metre sea-level fluctuations on centennial timescales from mid-Holocene corals of Southeast Asia

Aron J. Meltzner (), Adam D. Switzer, Benjamin P. Horton, Erica Ashe, Qiang Qiu, David F. Hill, Sarah L. Bradley, Robert Kopp (), Emma M. Hill, Jędrzej M. Majewski, Danny H. Natawidjaja and Bambang W. Suwargadi
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Aron J. Meltzner: Earth Observatory of Singapore, Nanyang Technological University
Adam D. Switzer: Earth Observatory of Singapore, Nanyang Technological University
Benjamin P. Horton: Earth Observatory of Singapore, Nanyang Technological University
Erica Ashe: Institute of Earth, Ocean and Atmospheric Sciences, Rutgers University
Qiang Qiu: Earth Observatory of Singapore, Nanyang Technological University
David F. Hill: School of Civil and Construction Engineering, Oregon State University
Sarah L. Bradley: Institute for Marine and Atmospheric Research, Utrecht University
Emma M. Hill: Earth Observatory of Singapore, Nanyang Technological University
Jędrzej M. Majewski: Earth Observatory of Singapore, Nanyang Technological University
Danny H. Natawidjaja: Research Center for Geotechnology, Indonesian Institute of Sciences (LIPI), Kompleks LIPI
Bambang W. Suwargadi: Research Center for Geotechnology, Indonesian Institute of Sciences (LIPI), Kompleks LIPI

Nature Communications, 2017, vol. 8, issue 1, 1-16

Abstract: Abstract Sea-level rise is a global problem, yet to forecast future changes, we must understand how and why relative sea level (RSL) varied in the past, on local to global scales. In East and Southeast Asia, details of Holocene RSL are poorly understood. Here we present two independent high-resolution RSL proxy records from Belitung Island on the Sunda Shelf. These records capture spatial variations in glacial isostatic adjustment and paleotidal range, yet both reveal a RSL history between 6850 and 6500 cal years BP that includes two 0.6 m fluctuations, with rates of RSL change reaching 13±4 mm per year (2σ). Observations along the south coast of China, although of a lower resolution, reveal fluctuations similar in amplitude and timing to those on the Sunda Shelf. The consistency of the Southeast Asian records, from sites 2,600 km apart, suggests that the records reflect regional changes in RSL that are unprecedented in modern times.

Date: 2017
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DOI: 10.1038/ncomms14387

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