Life Cycle of the Crisis Situation Threat and Its Various Models

This chapter deals with a crisis situation life cycle and its various models. Two specific data sets collected during the floods in the Czech Republic in 2013 are used for presenting various life cycle models of a threat and risk dynamics. The best results in the data approximation by the least squares using polynomial functions of degree 2–5, two types of linear-exponential, linear-logarithmic, linear-irrational, quadratic-goniometric, cubic-goniometric, and piecewise-linear function were achieved by approximation of the piecewise-linear function, which corresponds best to life cycle model of a threat and risk dynamics.