Exposure to risks + ability to cope changes over time dynamic Flashcards
disaster risk equation
risk = freq or magnitude of hazard x level of vulnerability/ capacity of population to cope and adapt
when does a geophysical event became a hazard
when it poses a risk to people
what is a ‘disaster’
an event that results in loss of life or large amount of environmental damage to human environment
exposure to tectonic hazards depends on what factors?
- freq of earthquakes + volcanic activity
- magnitude of earthquakes + volcanic activity
- types of hazards generated
- no. of people living in earthquake prone area
what is important to consider when looking at the magnitude of a tectonic event?
how often event occurs + interval between events
what is a ‘recurrence interval’?
avg time between two events of equal magnitude
what is resilience
the degree to which an area can recover from the impact of a hazard
what factors influence response to a disaster?
- speed of onset of event
- magnitude of event
- length of event
- level of monitoring
- degree of preparation
- quality / quantity of relief
what is the aim of park model (disaster response curve)
aim is to show the effects of a hazard on quality of life over a sequence of time.
stages in park model
stage 1 : modifying the cause + event stage 2 : hazardous event stage 3 : search + rescue stage 4: modifying the loss stage 5: nature of recovery