Identifies the main bifurcation node (Moussa, 2008) in a catchment.
ABCD = MainBifurcationNode ( handle_fdr , outlet )
integer: handle on the flow direction grid to be used.
integer: ID of the outlet pixel (record number in the raster, as returned by XY2rec
).
Output: vector of 4 elements containing the record numbers of outlets A, B, C, D (see Moussa, 2008).
Identifies the main biburcation node (Moussa, 2008) in a catchment.
[1] Moussa, R. (2008) Effect of channel network topology, basin segmentation and rainfall spatial distribution on the geomorphologic instantaneous unit hydrograph transfer function, Hydrol. Processes, 22(3), pp.395-419, doi:10.1002/hyp.6612.