Characteristics of nitrogen loading and aquifer susceptibility to contamination were evaluated to determine their influence on contamination of shallow ground water by nitrate. A set of 13 explanatory variables was derived from these characteristics, and variables that have a significant influence were identified using logistic regression (LR). Multivariate LR models based on more than 900 samp...

Groundwater in a coastal sand aquifer is enriched in arsenic as a result of historical discharges from an industrial facility on the central NSW coast. Subsequent investigations also identified arsenic in the soil within the saturated zone down-gradient of the source area. Arsenic concentrations in soil and groundwater decrease markedly along a narrow flow path towards a tidal river some 300 m ...

The steady response of the free surface of a fluid in a porous medium is considered during extraction of the fluid through a line sink. A conformal mapping approach is used to derive exact solutions to a family of problems in which the line sink is place at the apex of a wedge-shaped impermeable boundary, including the limiting cases of an ubounded aquifer and a flat-bottomed aquifer of finite ...

Compartmentalisation, the subdivision of an aquifer into discrete and relatively isolated units, may be of critical importance for the protection of groundwater although it has been largely ignored in the groundwater literature. The Lower Triassic Sherwood Sandstone, in north west of England, UK, may be a good example of an aquifer that has been compartmentalised by numerous high angle faults w...

A computational approach is presented for steady Dupuit interface flow where the aquifer extends below the sea. A detailed approach is outlined to determine the head at the coastline so that the solution below the leaky seabed may be combined with any type of steady Dupuit interface flow in the aquifer below the land. The method allows for any inland boundary condition including specified head ...

The study area of Marand city is 45 ° 46 'east longitude and 38 ° 26' north latitude and is located in the northwest of East Azarbaijan province and 60 km northwest of Tabriz province. Unfortunately, in recent years, the development of countries, including Iran, has led to more exploitation and improper use of groundwater resources, which reduces these resources and does not control the amount ...

Nowadays the study of regional groundwater resources, because of draught ,their optimal exploitation,and reducing their pollution is a vital matter. A proper way to prevent the pollution of undergroundwaters is to locate vulnerable spots and to conduct an efficient exploitation of the ground. Using thepresent models is very essential to locate and study about vulnerable spots. For this study, G...