Research Reports - Landslides
AusGeo News Articles
Although not as high profile in Australia as many other hazards such as cyclones, storm surge, floods and earthquakes, more loss of life and injury, along with economic losses, can be attributed to landslides than is generally recognised. Landslide risk is a localised phenomenon. Within the Gold Coast hinterland region the risk posed from landslides is significant. This report explains that there could be a total of four fatalities and up to two dwellings destroyed on slopes greater than 25 degrees, but asserts that in other areas of the Gold Coast, the landslide risk is low.
One definite and two probable large debris flow events are known to have occurred in the Cairns region since European settlement. On 12 January 1951, a torrential deluge of about 700 millimetres of rain in just under five hours triggered debris flows which affected 10 kilometres of the Captain Cook Highway between Buchan and Simpson's Points (Ellis Beach).
Coastal Erosion Hazards - Perth, Western Australia
The south-west coast of Western Australia is made up of a series of exposed limestone headlands which are prone to the development of cliff lines and large overhangs. Coastal processes such as wind and water erosion in conjunction with salt crystallisation and carbonate dissolution make these cliffs highly susceptible to collapse. The damaging impact that these unstable cliffs can have on the community was demonstrated on 27 September 1996, when four adults and five children were killed in a rockfall at Huzzas Beach, Gracetown.
Karst Hazards - Wanneroo, Western Australia
Within the Perth region, a karst belt lies five kilometres inland from the coast and stretches for approximately 24 kilometres in a north west to south east direction. This area is made up of one main geological unit, the Tamala Limestone which is surrounded by residual sands formed from the erosion of the limestone.