Papers reviewed 1. C.A. Onstad and A.J. Bowie, Basin sediment yield modelling using hydrological variables. 2. T. Mizutani, Erosion processes in mountain basins in humid regions. 3. I. Bogardi, L. Duckstein, F. Szidarovszky andM. Fogel, Reservoir sedimentation under uncertainty: analytic approach versus simulation. 4. J.P. Bennett and CF. Nordin, Simulation of sediment transport and armouring (...

We consider a one-dimensional two-phase Stefan problem, modeling a layer of solid material oating on liquid. The model includes internal heat sources, variable total mass (resulting e.g. from sedimentation or erosion), and a pressure-dependent melting point. The problem is reduced to a set of nonlinear integral equations, which provides the basis for an existence and uniqueness proof and a new ...

Farmers who participate in the Conservation Reserve Program (a voluntary program that removes highly erodible cropland from proauction) may be able to supplement their annual government payment by renting out their land to hunters, fishers, birdwatchers, or wildlife photographers. Those recreational activities may boost income and employment in the larger region by raising retail spending in ne...

Abstract Sedimentation and erosion processes in sedimentary basins can be modeled by a parabolic equation with a limiter on the fluxes and a constraint on the time variation. This limiter happens to satisfy a stationary scalar hyperbolic inequality, within a constraint, for which we prove the existence and the uniqueness of the solution. Actually, this solution is shown to be the maximal elemen...

1 Abstract We present results of self-consistent experiments of basin formation by extension and basin inversion through subsequent contraction. Our viscous-plastic finite element models include feedback interactions between crustal deformation, the development of local shear zones, and sedimentation and erosion. The extensional basins show a high degree of sensitivity to crustal strain softeni...

â â â  reports indicate that the mahabad dam has been silting up more than it was expected. this research has been tried to study the causes and the agents of these changes. a duration of two years periods (that is from october 1986 to october 1987 and october 1991 to october 1992) was taken up to compare and then to determine the role of the sedimentation on these changes. results show that th...

Floods of high magnitude are one of the major problems in the north-eastern region of India. Heavy flooding causes abrupt changes in the flow pattern of the rivers. The present paper deals with the study of three northern bank tributaries of the Brahmaputra river, namely Jia-Bhareli, Puthimari and Pagladiya. The river Brahmaputra shows significant amount of erosion and deposition in the basin. ...