Skeletal Sr/Ca and 18O/16O ratios in corals from the Great Barrier Reef, Australia, indicate that the tropical ocean surface approximately 5350 years ago was 1 degrees C warmer and enriched in 18O by 0.5 per mil relative to modern seawater. The results suggest that the temperature increase enhanced the evaporative enrichment of 18O in seawater. Transport of part of the additional atmospheric water vapor to extratropical latitudes may have sustained the 18O/16O anomaly. The reduced glacial-Holocene shift in seawater 18O/16O ratio produced by the mid-Holocene 18O enrichment may help to reconcile the different temperature histories for the last deglaciation given by coral Sr/Ca thermometry and foraminiferal oxygen-isotope records.

This 2007 book reviews the history of geomorphological studies of the Great Barrier Reef and assesses the influences of sea-level change and oceanographic processes on the development of reefs over the last 10,000 years. It presents analyses of recently attained data from the Great Barrier Reef and reconstructions of the sequence of events which have led to its more recent geomorphology. The authors emphasise the importance of the geomorphological time span and its applications for present management applications. This is a valuable reference for academic researchers in geomorphology and oceanography, and will also appeal to graduate students in related fields.

No abstract

No abstract

No abstract

No abstract

No abstract

A mapping programme of all reefs of the Great Barrier Reef Marine Park area and compilation of a computer‐based gazetteer containing locational and morphological data have permitted the first comprehensive spatial and morphometric analysis of the Great Barrier Reef. As previously suspected the analysis shows that a degree of organisation exists in the complexity of the Reef and clear regional and latitudinal patterns are recognised Reasons for this, particularly in relation to regional structure and the influence of the pre‐Holocene foundations of the modem reef, are discussed The usefulness of a morphometric approach is suggested and an example related to Acanthaster planci outbreaks presented