title: Gradient-limited surfaces: formation of geological landscapes.
abstract: A simple scenario of the formation of geological landscapes is suggested, and the respective lattice model is derived. Numerical analysis shows that the arising non-Gaussian surfaces are characterized by the scale-dependent Hurst exponent varying from 0.7 to 1, in agreement with experimental data.
authors.affiliation: Institute of Cybernetics, Tallinn Technical University, Akadeemia tee 21, 12618 Tallinn, Estonia.
authors.forename: Jaan
authors.initials: J
authors.lastname: Kalda