EQ2 Flashcards
Difference between hazard and disaster?
Hazard is the physical event that has occurred, but it is only a disaster it occurs in an area where there is a vulnerable population.
Disaster risk equation?
(Hazard X Vulnerability) / Capacity to Cope
What does the hazard refer to in the disaster risk equation?
the lava, ash, type of waves, lahars, flooding etc
What does vulnerability refer to in the disaster risk equation?
the location, coastal?, mountain location?, proximity of population to the hazard, poverty, low levels of education, high population density, age of population, access to healthcare, insurance, accessibility
What does capacity refer to in the disaster risk equation?
quality of the governance, development of the country, planning and management, response
What is the Pressure and release model?
helps analyse the underlying risk factors, factors contributing to the progression of vulnerability and hazards faced within a community
The 3 different elements in the PAR model?
Root causes: Lack of development and governance, which leads to:
Dynamic factors: level of education and investment in the community services, population chains, poverty
and Unsafe conditions: fragile physical environment, fragile local economy
hazard profiles?
physical factors of a hazard are magnitude, speed of onset,aerial extent, frequency and duration etc
2 ways of measuring different hazards?
MMS (richter scale)
VEI
How much percentage of the population is estimated to suffer the impacts of a volcanic eruption?
How much percentage of the population is estimated to suffer the impacts of an earthquake?
1%
5%
Which event has much greater impacts and secondary hazard out of volcanoes and earthquakes?
Earthquakes
Fact about the proximity of volcanoes?
The concentration of active volcanoes in narrow belts means that only a small land area lies in close proximity to them
What are the economic impacts of a tectonic hazard roughly proportional to?
The land area exposed to the hazard
4 factors that affect the economic impacts of a tectonic hazard?
Level of development
Total number of people affected
Degree of urbanisation
Amount of uninsured losses