This study presents new knowledge of the environmental sensitivity of a dynamic mode of atypical wildland fire spread on steep lee-facing slopes. This is achieved through a series of idealized numerical simulations performed with the Weather Research and Forecasting (WRF) and WRF-Fire coupled atmosphere-fire models. The sensitivity of the atypical lateral fire spread across lee slopes is tested...

Mudboils are round to elongate, 1-3 m diameter bare soil patches that form on perennially frozen till. marine clayey silt, colluvium. or other poorly sorted sediments (muds) with significant silt and (or) clay content. In Keewatin these muds have low liquid limirs (<ZM) and limited plasticity indices (<It)%). Natural moisture contents are very near the liquid limit .w thal rhe muds liquefv and ...

In the 70’s, Nekhorochev proved that for an analytic nearly integrable Hamiltonian system, the action variables of the unperturbed Hamiltonian remain nearly constant over an exponentially long time with respect to the size of the perturbation, provided that the unperturbed Hamiltonian satisfies some generic transversality condition known as steepness. Using theorems of real subanalytic geometry...

This paper explores the effects of the surface density and concentration profiles of extra cellular matrix proteins on the migration of rat intestinal IEC-6 cells. Microfluidic devices were used to create linear, immobilized gradients of laminin. This study investigated both the impact of the steepness and local concentrations on the directedness of cell migration. The bulk concentrations of pr...

Highlights Very fine sand is the single most important variable for predicting rill and interrill erodibility values. Slope steepness property critical shear erosion. Erodibility prediction equations with best goodness-of-fits have both soil texture mineralogy terms. Equations to predict from texture, organic carbon, cation excha...

Aiming to provide a scientific basis for the prevention and control of soil erosion in Huaihe region, this study uses InVEST-SDR model estimate temporal spatial changes conservation region 2010, 2015 2020, driving factors are evaluated quantified using Random Forest Geodetector, respectively. The major findings as follows: (1) From 2010 loss retention gradually intensified, while distribution t...

Results on horizontal asymmetry and steepness distributions from analyses of ocean wave data collected during 10 severe storms in the northern North Sea are presented. The data have been collected at a sampling rate of 5 Hz using laser altimeters mounted on a fixed platform permitting the shapes of individual waves to be quite closely defined. This has allowed the steepness of the fronts and ba...