User manual for SIBERIA (Version 8.30)

This manual describes how to use the catchment evolution model SIBERIA developed by the author, beginning in 1986. SIBERIA is a computer model for simulating the evolution of landscapes under the action of runoff and erosion over long times scales (typically more than a few years). SIBERIA is both a very simple model and a very sophisticated one. The hydrology and erosion models are based on ones that are simple and widely accepted in the hydrology and agricultural communities since the 1960’s. These models are based on widely accepted physics and have been successfully calibrated in a range of environments. The sophistication of SIBERIA lies in (1) its use of digital terrain maps for the determination of drainage areas and geomorphology and (2) its ability to efficiently adjust the landform with time in response to the erosion that occurs on it. The basic theory underlying the model and the approximations required or computer solution are described in this manual. The parameters that the models uses are described together with the process involved in running SIBERIA. The standard file formats used for input to the model and for transfer to other data analysis and visualisation packages are described and sample code is provided for input of these files. Finally, details are provided on the standard procedures that are available in the model to extend various components of the model if the standard ones should fail to meet the purposes of the user. For further information about the details of the theory underlying SIBERIA or results from the model the publications in the references should be consulted