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Coral radiocarbon records of Indian Ocean water mass mixing and wind-induced upwelling along the coast of Sumatra, Indonesia

Grumet, N; Abram, Nerilie; Beck, J Warren; Dunbar, Robert B; Gagan, Michael; Guilderson, Thomas; Hantoro, Wahyoe; Suwargadi, Bambang W

Description

Radiocarbon (14C) in the skeletal aragonite of annually banded corals track radiocarbon concentrations in dissolved inorganic carbon (DIC) in surface seawater. As a result of nuclear weapons testing in the 1950s, oceanic uptake of excess14C in the atmosphere has increased the contrast between surface and deep ocean14C concentrations. We present accelerator mass spectrometric (AMS) measurements of14C/12C ratios (Δ14C) in Porites corals from the Mentawai Islands, Sumatra (0°S, 98°E) and Watamu,...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
URI: http://hdl.handle.net/1885/80382
Source: Journal of Geophysical Research
DOI: 10.1029/2003JC002087

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