GIS Numerical framework for geomorphological experiments

Abstract

In this work we present a numerical framework for simulation of surface processes and landforms. The model is called SIGNUM (Simple Integrated Geomorphological NUmerical Model) and is a Matlab, TIN-based landscape evolution model. We use the model to show a few examples of simulated topographic surfaces evolved through application of mathematical expressions for hillslope and fluvial erosion, channel sediment transport and surface uplift. A particular example is shown to reproduce a topographic feature similar to real landscapes, namely the approximately regular spacing of valleys at linear mountain fronts. Although work in the field of computer simulation of geomorphological processes of landscape evolution is at its beginning, results and insights from models such as the ones we present are gaining more and more attention in the scientific community, justifying and encouraging increasing research efforts.