نتایج جستجو برای: aquifer geology

تعداد نتایج: 18520  

Journal: :Water research 2009
Nora B Sutton Geert M van der Kraan Mark C M van Loosdrecht Gerard Muyzer Johannes Bruining Ruud J Schotting

While millions of people drink arsenic-contaminated tube well water across Bangladesh, there is no recent scientific explanation which is able to either comprehensively explain arsenic mobilization or to predict the spatial distribution of affected wells. Rather, mitigation strategies have focused on the sinking of deep tube wells into the currently arsenic-free Pleistocene aquifer. In this stu...

ژورنال: آبخیزداری ایران 2019

Ground waters are considered as substantial water resources in many parts of the world especially in arid and semi-arid area such as Iran. The population growth, the intensive use ofsurface water and groundwater resources has often affected ground water levels. To meeting water management objectives it is essential to have a comprehensive study on the aquifer recharge and ground water withdrawa...

2012
N MANDAL A CHATTOPADHAYAY H B SRIVASTAVA T K BISWAL S BOSE

Brittle and Ductile Deformational Structures in Tectonic Zones: The Research Trends in India N MANDAL1*, A CHATTOPADHAYAY2, H B SRIVASTAVA3, T K BISWAL4 and S BOSE5 1Department of Geological Sciences, Jadavpur University, Kolkata 700 032, India 2Department of Geology, University of Delhi, Delhi 110 007, India 3Department of Geology, Banaras Hindu University, Varanasi 221 005, India 4Department ...

Journal: :NRIAG Journal of Astronomy and Geophysics 2021

Water quality in Lagos's coastal area is prone to constant seawater intrusion due its proximity the Atlantic Ocean. Seawater aquifer a major challenge human survival and therefore needs urgent attention deficiency groundwater quality. This study applies integrated techniques map suitability zone (GSZ) around Lagos for sustainable development. The objectives were achieved by preparing eight diff...

2005
Elizabeth H. Keating Bruce A. Robinson Velimir V. Vesselinov

primarily agricultural) and decreased baseflow because of groundwater production. For example, in 2002 the Before recent drilling and characterization efforts in the vicinity State of New Mexico was unable to honor interstate of Los Alamos National Laboratory (LANL), conceptual models had been developed for recharge and discharge in the regional aquifer on stream compacts for surface water deli...

1997
M. L. Calvache

Mathematical modelling of salt-water intrusion processes in three aquifers on the southern coast of Spain (Río Verde, Río Vélez and Castell de Ferro) reveals that, although all three systems are subject to the same climate and seasonal over-exploitation, geological and human factors have very different effects on the dynamics of contamination. In the Río Verde aquifer, the most important influe...

2003
Jozsef Szilagyi

[1] Estimates of aquifer parameters, saturated hydraulic conductivity, and drainable porosity were obtained by an analytical solution of the two-dimensional Laplace equation with linearized boundary conditions and were compared to prescribed parameters in a finite element model that simulated drainage of a coupled system of unsaturated/saturated flow. Boundary conditions prerequisite for the an...

2017
Richelle M. Allen-King Indra Kalinovich David F. Dominic Guohui Wang

We determined that the spatial heterogeneity in aquifer properties governing the reactive transport of volatile organic contaminants is defined by the arrangement of lithofacies. We measured permeability (k) and perchloroethene sorption distribution coefficient (Kd) for lithofacies that we delineated for samples from the Canadian Forces Base Borden Aquifer. We compiled existing data and collect...

Journal: :Journal of environmental quality 2010
Declan Page Peter Dillon Joanne Vanderzalm Simon Toze Jatinder Sidhu Karen Barry Kerry Levett Sarah Kremer Rudi Regel

The objective of the Parafield Aquifer Storage Transfer and Recovery research project in South Australia is to determine whether stormwater from an urban catchment that is treated in a constructed wetland and stored in an initially brackish aquifer before recovery can meet potable water standards. The water produced by the stormwater harvesting system, which included a constructed wetland, was ...

2006
VANESSA MITCHELL ANDREW W. WOODS

The injection of liquid from a central well into a partially saturated aquifer of finite thickness is described using similarity solutions. The solutions illustrate that injection leads to a growing zone around the source in which the fluid fills the whole depth of the aquifer. Beyond this zone, the current adjusts to the depth in the far field as the fluid slumps under gravity. The radial exte...

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