Traditionally risk formula

Traditionally risk is described as:

The four main elements of risk related to natural hazards [*1] are:

Hazard-related:

  • probability of hazard occurrence
  • hazard intensity (which relates to the probability) spatial and temporal distribution of main features of the hazard, that is the magnitude and/or duration

Target-related:

  • physical exposure to hazard spatial and temporal distribution of target objects, which depends on their resistance to the impact of a hazardous event; practically, by the exposure, the range of potentially damaging events at a particular location is described
  • human vulnerability to disaster

Note the difference between the two relationships:

Whether a hazard of a given intensity will become a disaster, a so-called damage threshold, depends on human sensitivity to hazard.


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Flood risk

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Source

FC-UB

TUHH

References

*1 Hollenstein (2005)

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