Hazard mapping, preperation, perception of risk.

Question 1

What is hazard mapping?

Answer 1

• areas that have been affected/are vulnerable to a particular hazard are highlighted on a map and a record of its past events is created
• data such as magnitude and frequency is collected
• presented in various colours where areas more at risk are highlighted
• focus where you could build defences and hazard proof buildings

Question 2

Explain parkfield.

Answer 2

• attempted to predict an earthquake along the sam andreas fault
• despite all instruments, earthquake occurred without warning
• triggers are too far down to be measured

Question 3

Preparedness and prediction.

Answer 3

• Japan 2011 tsunami occurred after a 7.2 quake
• most effective method was protection and preparation
• warnings sent out through social media
• flood defences failed due to quake shifting ground and let wave make defences useless
• ECONOMIC SITUTIAN- japan good, indonesia poor.

Question 4

Prediction of earthquakes.

Answer 4

measuring:

• ground tilt
• changes in rock stress
• hazard mapping

Question 5

Living with a volcanoes:

Answer 5

mt vesuvius action plan:
•densely populated city of naples 12km away from volcano
•gov. made plan in case of explosion
•3 areas with different hazards defined (red yellow blue zones, red being most affected)
volcanoes in the cascade region