Tropical Cyclones

2084 Words Apr 16th, 2008 9 Pages
Geography

Natural hazards: tropical cyclones

Year 9 assessment task 3

Sam borron

Year 9

Mr Hine

Tropical cyclone Larry

Geographical processes associated with tropical cyclones

Tropical cyclones form over warm oceans (above 26.5˚ C) as low pressure systems and gradually build up intensity. They have clockwise wind circulations and produce gale force winds. These winds can extend hundreds of kilometers from the cyclone center
Tropical cyclones can persist for many days and many follow quite erratic pats. they usually break up or dissipate over land or cooler oceans the circular eye or center of a tropical cyclone is an area carctorise by light winds and often by clear sky. The diameter of the eye is usually aprrox 40 km but can rang
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• The high winds caused enormous damage to infrastructure
• Approximately 40% of homes were damaged

Social impacts
• Cyclone Larry took no human lives
• A lot of hospital police stations and fire stations were damaged
• A few people after cyclone Larry hit were psychologically damaged
Environmental impacts
• Cyclone Larry destroyed 80-90% of the bananas
• Scientists have calculated that around 30% of the Wet Tropics World Heritage Area was impacted to some extent by Cyclone Larry.

(1) ‘Cyclone science’ shows rainforest impacts and recovery
Reference: 07/44
A year on from Cyclone Larry research into the environmental impacts of the category 4/5 storm is starting to deliver interesting results. This suite of projects involving 25 scientists from 5 institutions was set up shortly after the cyclone hit to investigate its effects on the rainforests of the Wet Tropics.
20 March 2007
“This is probably the most comprehensive study of the environmental impacts of a tropical cyclone ever done anywhere in the world,” said the Director of the CSIRO/JCU Tropical Landscapes Joint Venture, Professor Steve Turton.
Scientists have calculated that around 30% of the Wet Tropics World Heritage Area was impacted to some extent by Cyclone Larry.
“Fragments of remnant rainforest in otherwise cleared areas appear to have been the hardest hit,” he said.
“Cyclones are a natural process that tropical rainforest plants
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