Tectonics enq 2 Flashcards
What is the hazard risk equation?
Hazard risk = hazard x vulnerability divided by capacity to cope
What does the pressure releases model (PAR) model do?
What are the three professions of vulnerability within it
Helps look at the factors that create disasters
1. root causes
2. dynamic pressures
3. unsafe conditions
What is risk
The probability of harm or loss taking place.
What is vulnerability
The conditions determined by physical, social, economic and environmental factors or processes which increase the susceptibility of an individual, a community, assets or systems to the impacts of hazards.
What do hazard profiles allow for
Countries to consider specific disasters and help distinguish patterns that might help them in the future.
Name 4 factors that can increase a nations vulnerability in the South Pacific
- no mobile phone service in isolated islands - lack of communication
- weak governance
-poverty - limited safe areas to move to
- lack of investment in health care and sanitation
- low adaptive rates due to low educational attainment
What is a multiple hazard zone?
The countries that are at risk often suffer from more than one hazard.
2 examples of a multiple hazard zone
Philippines
Vanuatu
Name three reasons why there is increased vulnerability in rapidly growing cities
- increased population density
- more people having to live on marginal land
- lack of suitable planning and governance
Case study: Chile
what is chiles geographical, tectonic position
- sits between the nazca and south American plate within the ring of fire.
- the nazca plate subducts under the sa plate every year
TRUE OR FALSE DOES CHILE HAVE A LONG HISTORY OF EARTHQUAKES
TRUE
Case study: Chile
What did the 9.5M quake in 1960 and 2010 quake lead to.
A deeper cultural appreciation for strict building codes, consequently Chile has one of the most effective disaster relief insfrastructures
Case Study: Chile
the event in 2015
8.4M
caused by a tsunami wave, water pushed debris through the town
9 killed
Case Study: Chile
Preparation and response
Strict building codes only 6/6000 seriously damaged as all new buildings must be able to survive a 9M eq
Minimum of 7 evacuations each year
Mobile phone warning messages
Convoy of ambulances and firefighters
Case Study: Chile
Why was Chile successful
AS THEY BUILT BACK BETTER