The study site covers an area of 273 km in the Oristano plain on the western coast of central Sardinia (Italy). In the coastal area, since 1950, intensive agriculture and subsequent urbanization have resulted in overexploitation of the aquifer system and significant deterioration of groundwater quality due to seawater encroachment. The groundwater basin, hosted in the Quaternary alluvia release...

Landslides associated with hillside cuttings in igneous rock saprolites are a serious natural hazard in Hong Kong and have been extensively studied by government agencies and local universities for many years from the perspective of soil and rock engineering. A review of the case studies for some major landslides, especially deep-seated landslides, shows certain puzzling features. First, a numb...

In his reports on the regional hydrogeology of the central Great Plains, in particular southeastern Colorado and southwestern and central Kansas, Darton considered the Dakota aquifer to be a classic example of an artesian system. Computer simulations of the flow system in this study, however, suggest that the Dakota is not a regional artesian aquifer in the classic sense. Sensitivity analysis o...

Total dissolved mercury concentrations (HgT) were measured in groundwaters collected along a flow path within a deep, confined aquifer (i.e., the Carrizo Sand) in southeastern Texas, USA, along with major solutes, pH, and redox sensitive parameters that include dissolved iron species [Fe(II), Fe(III)] and sulfide [S(-II)] concentrations. Mercury concentrations range from below detection (<0.43 ...

Disturbances owing to coal mining result in the movement and failure of floor strata. Mining-induced fractures within may propagate confined aquifer, thereby causing water inrush disasters. In this study, we propose using strip backfill replacement above aquifer investigate depth floor. The problem is simplified as a distributed force model on half-plane body. First, stress disturbance during c...