expansive behavior is usually observed in soils, which contain fractions of clay minerals in their composition. water absorption of clay particles and change of natural water content of soil up to plastic limit and down to shrinkage limit will cause significant volume change in expansive soils and will result in severe damages to the structures, buildings and foundations. swelling potential is ...

Landslide which is defined as the movement of a mass of rock, debris or earth down a slope,1 is known as one of the most destructive natural hazards all over the world2 but fortunately, it can be prevented through different available methods including prediction and wise constructions. Damages caused by landslides can be ranging from top soil loss to human death, they also can change the figure...

This study aimed to describe the characteristics of natural disasters and associated losses from 1985 to 2014. The Mann-Kendall method was used to detect any long-term trends and abrupt changes. Hotspot analysis was conducted to detect the spatial clusters of disasters. We found an increasing trend in the occurrence of integrated natural disasters (tau = 0.594, p < 0.001), particularly for floo...

Landslides, as geological hazards, cause significant casualties and economic losses. Therefore, it is necessary to identify areas prone to landslides for prevention work. This paper proposes an improved information value model based on gray clustering (IVM-GC) for landslide susceptibility mapping. This method uses the information value derived from an information value model to achieve suscepti...

Large–scale landslides in Valles Marineris wallrock are analyzed in order to determine what triggering mechanisms caused the landslides. These landslides occur in the locality of large faults, and therefore it is hypothesized that the landslides are the result of marsquakes triggering slope instability. This work confirms that landslides occur where the seismic hazard map forecasts highest seis...

The vertical component of ground motions is known to cause severe damages certain structures. Long span cable-stayed bridges are among those vulnerable structures due their high mass and cables that take no compression. In this paper, the earthquake effects on several have been investigated using 3-D nonlinear time history finite element analyses. Different main lengths, pylon shapes pylon/deck...

Extreme rainfall causes floods and landslides, so damages humans socioeconomics; for instance, landslides have been triggered by repeated torrential precipitation caused severe damage in the Kyushu region, Japan. Therefore, evaluating extreme is necessary to provide basic information measures of rainfall-induced disasters. In this study, we estimated probability daily Kyushu. The annual maximum...