DISCUSSION of 'Coding random self-similar river networks and calculating geometric distances: 1. General methodology' and '2. Application to runoff simulations' - On width function-based unit hydrographs deduced from separately random self-similar river networks and rainfall variability.

摘要

Hung & Wang (2005a,b) base their approach on successive steps related to a kind of geomorphometric modelling, the deduction of a rainfall-runoff transfer function, and the application to a Taiwanese basin subject to typhoons. Several conceptual points of each of these steps and their propagation through the whole approach are discussed; referring to the likelihood of the proposed separately random self-similar river networks, the deduction of width function-based unit hydrographs, and the accounting for variability of rainfall and of induced runoff.