نتایج جستجو برای: groundwater artificial discharge

تعداد نتایج: 412190  

The prediction of groundwater quality is very important for the management of water resources and environmental activities. The present study has integrated a number of methods such as Geographic Information Systems (GIS) and Artificial Intelligence (AI) methodologies to predict groundwater quality in Kerman plain (including HCO3-, concentrations and Electrical Conductivity (EC) of groundwater)...

2016
Maurizio Polemio

The population concentration in coastal areas and the increase of groundwater discharge in combination with the peculiarities of karstic coastal aquifers constitute a huge worldwide problem, which is particularly relevant for coastal aquifers of the Mediterranean basin. This paper offers a review of scientific activities realized to pursue the optimal utilization of Apulian coastal groundwater....

2003
Atsunao MARUI

Fresh groundwater comes in contact with seawater at the downstream end of its flow system. Most previous work has discussed the shape of the seawater/freshwater interface on the basis of Ghyben-Herzberg’s law. The groundwater, however, pushes the seawater farther offshore side than predicted by the law, giving rise to freshwater flows even below the bottom of the sea. A previous study found tha...

2008
Jennifer E. Pyzoha Timothy J. Callahan Ge Sun Carl C. Trettin Masato Miwa

This paper describes how climate influences the hydrology of an ephemeral depressional wetland. Surface water and groundwater elevation data were collected for 7 years in a Coastal Plain watershed in South Carolina USA containing depressional wetlands, known as Carolina bays. Rainfall and temperature data were compared with water-table well and piezometer data in and around one wetland. Using t...

Journal: :Science 2002
William M Alley Richard W Healy James W LaBaugh Thomas E Reilly

The dynamic nature of groundwater is not readily apparent, except where discharge is focused at springs or where recharge enters sinkholes. Yet groundwater flow and storage are continually changing in response to human and climatic stresses. Wise development of groundwater resources requires a more complete understanding of these changes in flow and storage and of their effects on the terrestri...

Journal: :international journal of environmental research 0

groundwater is the main source of potable water in most areas of mazandaran province, like sari and babol city. thus the safety of groundwater supplies is very important in these regions. unfortunately attention to groundwater quality has remained limited in iran. in recent years, the growth of industry, technology, population, and water use has increased the stress upon both land and water res...

Journal: :environmental health engineering and management 0
ali akbar mohammadi department of environmental health engineering, neyshabur university of medical sciences, neyshabur, iran mansour ghaderpoori department of environmental health engineering, faculty of health and nutrition, lorestan university of medical sciences, khorramabad, iran mahmood yousefi students research committee, neyshabur university of medical sciences, neyshabur, iran malihe rahmatipoor students research committee, neyshabur university of medical sciences, neyshabur, iran safoora javan students research committee, department of environmental health engineering, neyshabur university of medical sciences, neyshabur, iran

background: one issue of concern in water supply is the quality of water. measuring the qualitative parameters of water is time-consuming and costly. predicting these parameters using various models leads to a reduction in related expenses and the presentation of overall and comprehensive statistics for water resource management. methods: the present study used an artificial neural network (ann...

2014
R. Zeng

Groundwater-fed irrigation has altered surface and groundwater interactions in the Republic River basin (RRB) in the midwestern United States, where agriculture heavily depends on irrigation. The decreasing flow trend recorded at the RRB gauging station since the 1950s reflects the synthetical effect of dynamic interactions between surface water and groundwater systems, which has been enhanced ...

Journal: :Water research 2014
Vincent M Yau Kenneth C Schiff Benjamin F Arnold John F Griffith Joshua S Gruber Catherine C Wright Timothy J Wade Susan Burns Jacqueline M Hayes Charles McGee Mark Gold Yiping Cao Alexandria B Boehm Stephen B Weisberg John M Colford

Use of fecal indicator bacteria (FIB) for monitoring beach water quality is based on their co-occurrence with human pathogens, a relationship that can be dramatically altered by fate and transport processes after leaving the human intestine. We conducted a prospective cohort study at Avalon Beach, California (USA), where the indicator relationship is potentially affected by the discharge of sew...

2009
R. A. Parsons

Introduction: A stereo pair of HiRISE images of a pole-facing crater slope at 38S, 218E shows many fresh looking gullies. After measuring slopes using the stereo viewing geometry, we estimate the expected fluvial discharge rates using theory from Kleinhans [1] and Ikeda [2]. We also develop a numerical model of sediment transport based on theory presented in Kleinhans [1] to determine the time ...

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