On the computation of the quasi‐dynamic wetness index with multiple‐flow‐direction algorithms

摘要: [1] The quasi-dynamic wetness index, in its original development, was computed by calculating the travel time along all possible upslope flow paths on a contour-based terrain network. In more recent applications same approach has been extended to gridded digital elevation models with single-flow-direction algorithms. Multiple-flow-direction algorithms, although effective representing paths, have not used because they are practicable established methodology. We propose an alternative method for computing index based numerical integration of linear-kinematic wave equation. This can be applied any terrain-based flow-direction algorithms currently published. The is robust and efficient.