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World at Risk
When does a natural event become a hazard?
When the natural event has the potential to damage life or property

Event: a hazard that occurs at a particular time.
Context hazard
Widespread global threats due to environmental factors, such as climate change.

Doesn't affect one area, but…

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Disaster: a hazard becoming a reality in an event that causes death and damage to gods
and property and the environment.

Degg's model
- How a hazard becomes a disaster

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Vulnerability quadrant

Link to case studies

The risk of disasters grows as global hazards and peoples vulnerability increases, while their capacity
to cope decreases.

The disaster risk equation:

Risk: frequency or magnitude of hazard X level of vulnerability
capacity to cope

The purpose of this equation is to measure the…

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Using the risk equation- tackling risk and vulnerability in Bangladesh

Risk: frequency or magnitude of hazard X level of vulnerability
capacity to cope

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Global warming- context hazard (wide spread)
Arguably the greatest hazard we currently face is a chronic hazard: wide spread impacts raises issues
of injustice and has a complex solution.

The green house effect, this is a natural phenomenon, which is essential for life on earth. The
atmosphere traps green house…

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Why might global warming be out greatest hazard?
It's a global problem-
Everywhere will be affected but some areas will be affected more than others.

Its known as a chronic hazard-
It is an ongoing worldwide hazard, which could have more direct impacts on people and property,
having a range…

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Global hazard trends
Some type of hazards are increasing in magnitude and frequency, and having greater impacts upon
people and their lives.

Frequency: how often an event of a certain size (magnitude) occurs.

For example, a flood of 1 meter high may occur, on average every year on a particular…

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Identifying Hazard Hotspots

Two organisations

Hazard management unit
Centre of hazard and risk management at Columbia university

The risk of death and damage, how exposed (6 major hazards) vulnerability, how densely populated
the area is, how much poverty is that country in (GDP).

GIS are used to identify from the…

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Case study:

The Philippines is situated on a destructive plate boundary, where the
pacific plate sub duct's under the Eurasian plate.

In 1991 Mount Pinatubo's volcano erupted

Over 58,000 people were evacuated on the first day the 9th June,
reaching over 200,000 people by the 12th June

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In 1990, an earthquake on the Richter scale of 7.8 occurred on Luzon Island killing over 1500

The Guinsaugon landslide happened in 2006

It covered over 3km2 of land
1150 people died
The landslide engulfed a whole village
During 2000-2006

Number of events 7
Killed 1704
Damage in…


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