it is over two decades that groundwater flow models are routinely implemented for better management of groundwater resources.modeling groundwater flow with the help of the ground water modeling system (gms) in the damghan plain aquifer in northern iran,which experiences declining levels and numerous environmental hazards, has demonstrated that, (a) in the worst case scenario theaquifer will fac...

Ground-water and surface Xow depletions are altering riparian ecosystems throughout the southwestern United States, and have contributed to the decline of forests of the pioneer trees Populus fremontii (Fremont cottonwood) and Salix gooddingii (Goodding willow). On some rivers, these forests have been replaced by shrublands of Tamarix ramosissima (tamarisk), a drought-tolerant species from Eura...

Introduction Ground water constituents in tree trunks have been examined for a variety of applications. Inorganic constituents in tree cores have been examined as an aid to investigating solvent dechlorination (Yanosky et al. 2001) and as a tool for examining the history of ground water contamination (Vroblesky and Yanosky 1990; Yanosky and Vroblesky 1992, 1995; Vroblesky et al. 1992). A variet...

introduction the special regional and geographical characteristics of iran, the flowof streams with mediterranean regime, topographic status, and diversity of relieves have provided an extensive areafor the penetration of water into the ground. all of these factors together with the shortage of ground water reservoirs have enhanced the significance of ground water in iran. since the volume of g...

iran is among the world’s arid and semi-arid regions and its demand for water has been increased due topopulation growth, urbanization and the development the economic sectors (industrial and agricultural). inmany of these regions, the lack of planning and the unauthorized use of resources have led to excessiveexploitation and a lower level of groundwater. the usable groundwater for the country...

Evidence for Water on Early Mars: Although numerous lines of evidence suggest that Mars must have been a "wet" planet at some time in its past, there is no universal agreement on the volume of hydrous activity, its style, or the characteristics of the corresponding climates through time. Morphological evidence for the presence of surface water on Mars is abundant [1-3] as is evidence for the ex...

The Hellisheidi geothermal power project in southwestern Iceland, site of a pilot study on the feasibility of sequestration of carbon dioxide in basaltic rocks. Here, carbon dioxide released from the hot water that powers the facility is dissolved in cooling water and injected below ground to a depth of 300 to 800 meters, where it can react with basalt to form new, stable minerals. See the spec...

Soil temperature (tB) was determined down to 2 m below ground level at 8 locations in the city of Oberhausen, Ruhr area, Germany, between August 2010 and July 2011 to investigate the subsurface urban heat island (SUHI) and its impact on drinking water quality. The soil temperatures obtained in Oberhausen demonstrate typical location-dependent behaviour. At the depth of drinking water pipes (1 t...