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Chapter 1 of the course provides an overview of the different kinds of catastrophes, known as the four key 'perils'. These cause the most economic or insured losses worldwide, and therefore are the main focus of catastrophe modelling. The four key perils consist of floods, earthquakes, wind storms, and tropical storms.
This chapter covers building vulnerability, which is a vital component in catastrophe modelling. Vulnerability is one of the key elements which enable us to look at the impacts of natural hazards on the built environment. This encompasses how much a building, whether commercial or residential, can withstand such events, as well as the financial implications.
Chapter 3 looks at uncertainties in catastrophe modelling, combining hazard data and vulnerability data to obtain economic or insured loss. Oasis works by simulating catastrophic events and their financial consequences. As there are many sources of uncertainty in the models, the models are probabilistic, which means that they provide the chances of the various levels of loss rather than just a single number.