We have developed a methodology to model infrastructure exposure to natural disasters at a regional scale.
We think that knowing the spatial distribution of natural hazards in an area is critical to make decision about mitigation, maintenance planning and future infrastructure development planning.
In other words, reducing the number of people affected by natural disaster, reducing direct economic loss and reducing disaster damage to critical infrastructure and disruption of basic services.
Our methodology follows a five-step process:
1. Problem definition
Together, we define the context and your needs.
This could be reducing uncertainty about new development exposure to natural disasters and unforeseen ground conditions, which may cause cost overruns, time delays, and quality problems during construction.
Or identifying potential habited and in-habited areas, infrastructure and communication networks potentially threatened by natural disasters, which may cause major damage as well as loss of human life.
2. Data sourcing
We collect and store geospatial data, including satellite sensors, from a wide network of public and commercial providers.
We clean, integrate, and prepare the data for visualisation, so they are ready for initial assessments and advanced analysis.
3. Natural hazard susceptibility
In collaboration with Terranum, we use a qualitative approach to identify areas susceptible to natural hazards at a regional scale.
We use numerical models to distinguish specific pre-existing conditions classified based on scientific criteria.
The result can be visualised in a susceptibility map localising over an entire region potential sources and propagation areas for different natural hazard processes.
4. Infrastructure value
Based on a specific metric and your existing or future asset location, we map your infrastructure value.
You tell us which metric you are interested in.
The metric could be financial, such as replacement value, or revenue value, but could also be social, such as number of residents, or users.
You provide us with the location of your asset, or we can map it using a combination of medium and high-resolution optical imagery, LiDAR data, and training data from Open Street Map.
5. Infrastructure exposure
We combine the results of the natural hazard susceptibility with the infrastructure value to identify hot spots where more values are exposed in the study area.
This process is replicable for different hazards, different asset-types, and different metrics in any area. It means that for the same area, different natural hazards and exposure on infrastructures are easily comparable.
By knowing the value of the exposed asset, you can make informed decision about mitigation implementation, asset monitoring, maintenance planning and future infrastructure location.