TAPES-G: A grid-based terrain analysis program for the environmental sciences

TAPES-G is a grid-based terrain analysis program that computes slope, aspect, upslope contributing area, profile and plan curvature and several other topographic attributes for each cell of a square-grid digital elevation model (DEM). These topographic attributes can be used to represent key physical processes in a form simple enough to allow modeling at catchment and larger scales. The program creates initially a depressionless DEM if desired. Upslope contributing area can be calculated using either the classical D8 algorithm, the quasi-random Rho8 algorithm, the multiple flow direction FD8/FRho8 algorithm or Costa-Cabral and Burges's stream tube-based DEMON algorithm. Stream networks, sub-catchments and the spatial distribution of individual attributes can be plotted interactively or copied to the ARC/INFO geographic information system (GIS) for further processing. Copyright (C) 1996 Elsevier Science Ltd.