Present - to - future sea level changes : The Australian case

We revisit available tide gauge data along the coasts of Australia, and we are able to demonstrate that the rate may vary between 0.1 and 1.5 mm/ year, and that there is an absence of acceleration over the last decades. With a database of 16 stations covering only the last 17 years, the National Tidal Centre claims that sea level is rising at a rate of 5.4 mm/year. We here analyse partly longer-term records from the same 16 sites as those used by the Australian Baseline Sea Level Monitoring Project (ABSLMP) and partly 70 other sites; i.e. a database of 86 stations covering a much longer time period. This database gives a mean trend in the order of 1.5 mm/year. Therefore, we challenge both the rate of sea level rise presented by the National Tidal Centre in Australia and the general claim of acceleration over the last decades. 2013 Trade Science Inc. INDIA Nils-Axel Mˆrner1*, Albert Parker2 1Paleogeophysics & Geodynamics, Rˆsundav‰gen 17, 13336 Saltsjˆbaden, (SWEDEN) 2University of Ballarat, PO Box 663, Ballarat, VIC 3353, (AUSTRALIA) E-mail : [email protected]; [email protected] Environmental Science An Indian Journal Trade Science Inc. Volume 8 Issue 2