Copula-Based Probabilistic Hazard Assessment Model for Debris Flow Considering the Uncertainties of Multiple Influencing Factors

Table 4

Four commonly used marginal distributions.

Marginal distribution	CDF F(x; p, q)	PDF f(x; p, q)	and
TruncNormal
Lognormal
Weibull
TruncGumbel

Note. Φ denotes the CDF of standard normal distribution; p and q are the parameters of the marginal probability distribution function; μ is the mean value; σ is the standard deviation.