Modelling the tsunami threat to Sydney Harbour (Port Jackson) with comparisons to historical events

摘要: Sydney Harbour is an iconic location with a dense population and low-lying development. On the east coast of Australia, facing Pacific Ocean, it exposed to several tsunamigenic trenches. There geologic historic evidence for tsunami affecting NSW coastline and, although threat considered moderate, present. One most catalogued events affect Chilean May 1960, which caused significant damage. This study, presents detailed assessment potential impact earthquake-generated on using wave trains sourced from both T2 TsuDAT databases. From database, modelled include generated by earthquakes magnitude 7.5, 8.0, 8.5 9.0 MW Puysegur New Hebrides trenches as well representations historical Chile in 1960 Japan 2011. those Tonga, Chile, have ARI ranging 200 36500. Using hydrodynamic model ANUGA, results show that cause terrestrial inundation, high current speeds, hazardous depths rapid changes water level. Maximum speeds vary range according location. Tsunami lower result maximum speeds. As source event increases increases, become higher. For <=8.5MW, may be hazard, inundation minimal. increase magnitude, becomes apparent at Manly embayments south side harbour. impactful trains, 5000-36500, widespread some locations occurs above 10m elevation.