Risk evaluations - cancelled guest lecture Flashcards
What is risk mapping, and what is it used for?
The graphical representation of the spatial distribution of risk, typically using maps.
- Risk maps can be used to communicate the results of a risk assessment to stakeholders and decision-makers
- Can help to identify areas that are most vulnerable to hazards.
What is a risk assessment?
A process of evaluating the likelihood and consequences of hazards and their potential impacts on a system or community.
- Involves a systematic and structured approach to gather and analyze data, to estimate the potential for loss or damage, and to identify the most effective risk management strategies.
What is remote sensing?
Involves the acquisition of information about an object or area without being in direct physical contact with it.
- This can be done using various sensors, such as satellites or aircraft, to capture images or other data.
- Can be used to gather information about the Earth’s surface, such as land cover, vegetation, and topography.
What is GIS?
involves the capture, storage, manipulation, analysis, and display of spatial data. GIS can be used to integrate and analyze multiple sources of data, such as remote sensing imagery, to support decision making in a variety of fields, including environmental management, urban planning, and disaster management.
What is the element at risk?
The population, properties, economic activities, including public services, or an other defined values exposed to hazards in a given area. Also referred to as assets.
What are the 6 Multi-hazard risk relationships?
- Independent hazards
- Compounding hazards
- Coupled hazards
- Disposition of hazards
- Domino or cascading hazards
- Conditional
What does the independent hazard risk relationship state?
Hazards are independent and caused by different triggers. This means that the expected losses from one hazard type are independent from the losses expected from the other hazard type. If that is the case, the risk can be calculated by adding the average annual losses for the different types of hazard
What does the compounding hazard risk relationship state?
Independent events happening close e.g. earthquake and floods. Triggering events do not interact.
What does the coupled hazard risk relationship state?
Different hazard types that are triggered by the same triggering event.
What does the disposition of hazards risk relationship state?
The influence one hazard exerts on the disposition of a second hazard, though without triggering it. The effect that one hazard can have in triggering and impacting the next hazard e.g. earthquake might trigger landslide
What does the domino or cascading of hazards risk relationship state?
Hazards that occur in chains: one hazard causes the next. These are also called domino effects, concatenated, or cascading hazards.
