نتایج جستجو برای: ground water ecology

تعداد نتایج: 725778  

Journal: :global journal of environmental science and management 2015
pawan k. bharti u.k. niyogi

the larsemann hills range is an ice-free oasis on the ingrid christensen coast of princess elizabeth land, east antarctica, which includes bharti island, fisher island, mcleod island, broknes peninsula, stornes peninsula, and several other islands, promontories, and nunataks. the larsemann hills is an ice-free area of approximately 50 km2, located halfway between the vestfold hills and the amer...

2006
Emily M. Taylor Donald S. Sweetkind

The ground-water system beneath the Amargosa Desert in southern Nevada and southeastern California (Figure 1) is under increasing demands from agricultural, commercial, and residential users. The Cenozoic basin fill in the Amargosa Desert basin has great lithologic diversity and state of consolidation, and is thus hydrogeologically heterogeneous. However the configuration and continuity of basi...

1996
Carl D. Palmer

Conventional pump-and-treat technologies are among the most widely used systems for the remediation of contaminated ground water. Within recent years it has become recognized that these systems can require protracted periods of time to make significant reductions in the quantity of contaminants associated with both the liquid and solid phases which constitute the subsurface matrix. Evaluating t...

Journal: :Environmental Modelling and Software 2006
Shu-Guang Li Qun Liu

IGW is a software environment for real-time 2D and 3D groundwater modeling. The software functions as a ‘‘numerical laboratory’’ in which the modeler can freely explore: visually creating an aquifer of desired configurations and then immediately investigating and visualizing the groundwater system. IGW allows the modeler’s thought processes to progress naturally and intuitively with the informa...

1989
Robert S. Kerr

Idealized laboratory experiments reported in the literature have been designed to simulate specific physical and chemical conditions. These laboratory conditions have allowed researchers to control the variables which affect the behavior of contaminants in the subsurface and to identify the mechanisms which are likely to occur in the field. An understanding of the various mechanisms of facilita...

2005
Murray Einarson

CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 808 Why Three-Dimensional Plume Delineation is Necessary . . . . . . . . . . . . . . . . . . . . . . . 812 Measurement of Vertical Hydraulic Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 814 One Time Sampling versus P...

1992
Dominic C. DiGiulio

The ability of soil venting to inexpensively remove large amounts of volatile organic compounds (VOCs) from contaminated soils is well established. However, the time required using venting to remediate soils to low contaminant levels often required by state and federal regulators has not been adequately investigated. Most field studies verify the ability of a venting system to circulate air in ...

2008
Tangtang Zhang Jun Wen Rogier van der Velde Xianhong Meng Zhenchao Li Yuanyong Liu Rong Liu

The total atmospheric water vapor content (TAWV) and land surfacetemperature (LST) play important roles in meteorology, hydrology, ecology and some otherdisciplines. In this paper, the ENVISAT/AATSR (The Advanced Along-Track ScanningRadiometer) thermal data are used to estimate the TAWV and LST over the Loess Plateauin China by using a practical split window algorithm. The distribution of the T...

A.G. Pathan A.S. Atkins R. N. Singh,

Ground water and surface water create a range of problems in lignite mining utilizing surface mining methods. In order to create a safe and economic mining environment, it is essential to carry out mining after dewatering the rock mass surrounding the lignite mines by advance dewatering techniques. This paper briefly describes the ground water regimes including pressure gradients associated wit...

2004

The Ecology contribution to address this question is to determine possible physicochemical impacts on 1) pond water quality and biological integrity, and 2) avulsed pit pond water quality and biological integrity in the historical pit location and receiving waters. These questions will be addressed by all study partners together in a more comprehensive fashion after the interim phase of reporting.

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