Alberto Boretti (2012) studied the historic data relating to sea level from long-term tidal gauges in place in Sydney Harbour for over 100 years. His study showed:
► Long term recording tide gauges show weak sea level rises and no acceleration.
► Recent satellite indirect measurements show more intense sea level rises but still no acceleration.
► There is no proof in the measured data that sea level is presently accelerating.
► Sea level rises of meters in the bay of Sydney are not very likely to occur in the short term.