Meandering channels with exposed point bars and sinuosities near 2.0 can spontaneously develop in a mix of diatomaceous earth and kaolinite clay. The experimental streams that were studied were as small as 4 cm wide. They showed many of the characteristics found in large meandering streams such as migration of channels, formation of point bars, clay plugs, chutes and bar scrolls. Most of the me...

The Three Gorges is a region with a very high landslide distribution density and a concentrated population. In Three Gorges there are often landslide disasters, and the potential risk of landslides is tremendous. In this paper, focusing on Three Gorges, which has a complicated landform, spatial forecasting of landslides is studied by establishing 20 forecast factors (spectra, texture, vegetatio...

Sinuous patterns traced by fluid flows are a ubiquitous feature of physical landscapes on Earth, Mars, the volcanic floodplains of the Moon and Venus, and other planetary bodies. Typically discussed as a consequence of migration processes in meandering rivers, sinuosity is also expressed in channel types that show little or no indication of meandering. Sinuosity is sometimes described as "inher...

[1] Axial valleys are found along most slow-spreading mid-ocean ridges and are one of the most prominent topographic features on Earth. In this paper, we present the first deep-tow swath bathymetry for the axial valley walls of the Mid-Atlantic Ridge. These data allow us to analyze axial valley wall morphology with a very high resolution (0.5 to 1 m compared to ≥ 50 m for shipboard multibeam ba...

In this paper, a single-slope tunnel pipeline was analysed considering the effects of vertical earth pressure, horizontal soil pressure, inner pressure, thermal expansion force and pipeline-soil friction. The concept of stagnation point for the pipeline was proposed. Considering the deformation compatibility condition of the pipeline elbow, the push force of anchor blocks of a single-slope tunn...

• Correct estimating of the linear fit parameters in the presence of large outliers. • The median of the empirical distribution of the residues determines line's shift. • The minimum of interquantile width determines line's slope (1st method). • The maximum of characteristic function's residues determines line's slope (2nd method). a b s t r a c t We consider the problem of linear fitting of no...

The article provides a detailed analysis of well-known studies, which allow considering the work structure together with base under dynamic influences, adequate replacement an infinite finite one using non-reflecting conditions on boundary region, methods for assessing behavior impact. A mathematical model, method, and algorithm were developed to evaluate earth dams shock impact non-reflective ...

A new surface roughness/incision measure is introduced based on the difference between the upstream flow length for each cell of a digital elevation model (DEM) along the topographic surface and its projection onto a horizontal plane. The upstream flow lengths along topographic surface can be calculated in ArcGIS software using the Flow Length tool with the inverse of cosine of local slope as w...

Landslides along the Missouri and Kansas rivers will affect existing structures and potential development in the Kansas City metropolitan area. A pilot landslide-mapping project was conducted in the vicinity of Atchison, Kansas, to inventory existing landslides and determine the factors that caused them. Landslides are generally controlled by the slope morphology, geology, soils, and moisture c...