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The challenge of natural hazards (How are different types of natural…
The challenge of natural hazards
What is a natural hazard?
Natural events that have always occurred on earth even without people
Humans are becoming increasingly vulnerable to natural hazards
Natural hazards pose a risk of damage to property, and loss of life
The more humans that come into contact with natural events the more the potential risk they cause increases
How are different types of natural hazards classified
They are most commonly classified by their physical processes
Tectonic hazards
Involve the movement of tectonic plates. e.g. Earthquakes, tsunamis
Atmospheric hazards
e.g. storms and hurricanes
geomorphological hazards
Occur on the earths surface e.g. flooding
Biological hazards
Involve living organisms e.g. forest fires
These categories are closely linked. For example landslides can cause tsunamis
They can also be caused by human influence. e.g. forest fires could start due to falling power lines igniting grass
Where do they occur?
Some areas are more vulnerable to natural hazards than others
During 2010
Earthquakes
Hati
Chile
Volcanic Eruptions
Iceland
Indonesia
Flooding
China
Avalanches
Pakistan
What factors effect hazard risk
Globally the incidence of natural hazards is increasing as a result of human influences. e.g. global warming deforestation and urbanisation
The frequency and magnitude of natural hazards is also increasing
Increase of 8 Billion in world population by 2024
Therefore is is inevitable the risks will continue to increase as there are more people to interact with natural events.
The risks are also made worse by the locations people live in whether by choice or out of necessity
