The Government has offered Australia's three mobile operators, and vividwireless, renewal of their existing spectrum allocated on 15 year licences in the late 90s and early 2000s at set prices, while the Government expects to rake in $3 billion.
Sedsim has been used successfully in Germany to model
coastal changes in the Baltic Sea where the coastline retreats on
average 45 metres every 100 years, and Dr Griffiths said that, in
Australia, the versatile model will be applied to predict the effects
of various disturbances on seabed environments and develop response
scenarios and coastal protection strategies.
According to Dr Griffiths, three climate change
scenarios were used to conduct simulations from 2000 to 2050. The
extreme scenario model – which assumes highest rainfall, highest sea
level rise and maximum sediment flow – indicated that:
• Many offshore oil and gas development sites will be susceptible to increased erosion
• Predicted changes in cyclone activity in the Ningaloo region may cause significant damage to the reef
• Wind-driven waves and storm events in southern regions will lead to increased beach and cliff erosion
• Temperature and salinity changes in northern waters will impact marine life.
“There are still many uncertainties about future climate change and
impacts, however the research provides a useful starting point to
discuss possible response strategies,” Dr Griffiths said.
“It emphasises the importance of seabed evolution in managing coastal
and offshore resources and infrastructure planning and design.”
Dr Griffiths said the CSIRO hoped to continually improve the model as
new data are collected “which will give us more accurate predictions
for the future.”
David Bass
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