Numerous simulation models have become available for the hazard delineation of gravitational mass movements such as debris flows in potential depositional area. This study compares basal friction coefficients two modelling approaches they been used other studies to simulate movement deposition. We show that both back-calculated are related fan or terrain slope deposition region and a flow mobil...

In muscle, active force and stiffness reflect numbers of actin-myosin interactions and shortening velocity reflects their turnover rates, but the molecular basis of mechanical friction is somewhat less clear. To better characterize molecular mechanisms that govern mechanical friction, we measured the rate of mechanical energy dissipation and the rate of actomyosin ATP utilization simultaneously...

With the re-evaluation and revision of a number of design floods, several embankment overtopping protection systems have been developed and a common technique is the construction of a stepped spillway on the downstream slope. For such moderate slope stepped channels, detailed air–water flow measurements were performed in a large facility with a focus on the rate of energy dissipation, flow resi...

A jet flowing in the Kelvin wave propagation direction along the seaward side of a continental slope is found to decrease in strength as it leaks mass onto the continental shelf. As a result, a shelf break jet flowing in the opposite direction is induced on the shelf. The combination of these two flows creates a decaying, high-pressure tongue centered about the shelf break. An idealized, reduce...

An integrated approach was adopted over Faifa Mountain and its surroundings, in Saudi Arabia, to identify landslide types, distribution, and controlling factors, and to generate landslide susceptibility maps. Given the inaccessibility of the area, we relied on remote sensing observations and GIS-based applications to enable spatial analysis of data and extrapolation of limited field observation...

Submarine landslides occur along active and passive continental margins and are potentially triggered by numerous factors including the dissociation of gas hydrates. The hazard produced by such landslides can damage infrastructure (oil platforms, telecommunication lines), generate tsunamis, and cause a catastrophic release of methane to the atmosphere and ocean. Here we develop numerical models...

A high-speed debris flow sliding into a reservoir can cause huge disaster. Consequently, predicting landslide movement accurately and its potential interaction with water is crucial. This paper developed computational model based on two–layer two–phase material point method (MPM) to simulate surge waves generated by granular landslides an erodible slope. By comparing rigid slope, the effect of ...

Based on the strength reduction method, laws of slope displacement and changing positions sliding surface during filling process are studied. The model multistage fill is established by finite element software PLAXIS. difference compared between with no reinforcement under same working condition. Sensitivity analysis carried out from two aspects which internal factors external factors. shows th...

It is demonstrated by using a simple model, that bedforms in a short tidal embayment can develop due to a positive feedback between tidal currents, sediment transport and bedforms. The system is forced by a prescribed free surface elevations at the entrance of the embayment. The water motions are modelled by the depth{integrated shallow water equations. For the sediment dynamics a diiusively do...

Observed avalanche flows of dense granular material have the property to present two possible behaviors: static (solid) or flowing (fluid). In such situation, an important challenge is to describe mathematically the evolution of the physical interface between the two phases. In this work we derive a set of equations that is able to manage the dynamics of such interface, in the so-called shallow...