A Monte Carlo algorithm to simulate the isothermal recrystallization process of snow is presented. The snow metamorphism is approximated by two mass redistribution processes: surface diffusion and sublimation-deposition. The algorithm is justified and its parametrization is determined. The simulation results are compared to experimental data, in particular, the temporal evolution of the specifi...

Purpose: substantiation of the required width a stable channel while carrying out bank protection works on Kuma river near town Zelenokumsk Stavropol Territory. The analysis feeding conditions in design area is carried out, main reasons for erosion-accumulative processes central part Zelenokumsk, Territory are considered. Materials and methods. considered basin located two natural zones – footh...

Introduction: The discovery of gullies on Mars [1,2] resulted in a wide variety of proposed candidate mechanisms for formation but ensuing analyses have shown very strong latitude and orientation dependencies on their distributions [3-6]. These constraints have been interpreted to require: 1) a volatile on or near the surface as a source of liquid water, and 2) insolation and slope orientation ...

Recent modeling of a thicker early CO2 martian atmosphere and Late Noachian climate predicts that for pressures beyond a fraction of a bar, atmosphere-surface thermal coupling occurs, resulting in adiabatic cooling of high areas across Mars. This promotes the transport of water ice from relatively warmer lowlying areas to the highlands, where deposition and accumulation of water ice result in a...