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

Table 3

Three-dimensional Archimedean copula functions.

Copula		Range of θ
Clayton		[-1, ∞)\{0}
Frank		(-∞, ∞)\{0}
Ali–Mikhail–Haq		[-1, 1)
Gumbel–Houggard		[-1, ∞)