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Coral oxygen isotope evidence for recent groundwater fluxes to the Australian Great Barrier Reef

Gagan, Michael; Ayliffe, Linda; Hopley, David; Scott-Gagan, Heather; Cowley, Joan

Description

High-resolution measurements of Sr/Ca and 18O/16O in mid-Holocene and modern Porites corals were used to derive a history of freshwater fluxes to the Australian Great Barrier Reef (GBR). Interannual variations in dry-season seawater 18O/16O evident in the coral record for the late 20th century, but not 6200 years ago, correlate with variations in groundwater recharge of coastal aquifers. The results suggest that a delay in groundwater recharge following the post-glacial sea-level rise, and...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
URI: http://hdl.handle.net/1885/72748
Source: Geophysical Research Letters

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