نتایج جستجو برای: shallow saline groundwater

تعداد نتایج: 113645  

Journal: :Frontiers in Earth Science 2023

The Ningxia Plain, situated in the arid zone of northwest China, is a typical dryland plain that faces significant challenges to sustainable agricultural development due soil salinization. In this study, we employed multivariate analysis and geostatistical methods investigate degree distribution types salinization hydrochemical characteristics shallow groundwater. We also examined relationship ...

Journal: :Journal of water and health 2011
Joseph T Zume

Several cultures of north-central Nigeria do not use community cemeteries. Instead, human remains are buried in and around family compounds, often in shallow and sometimes unmarked graves. At several locations, graves and drinking water wells end up too close to be presumed environmentally safe. This paper reports findings of a pilot study that explored the potential for groundwater contaminati...

Journal: :Sustainability 2022

(1) Background: Recently, secondary soil salinization has frequently occurred in ecological water conveyance and irrigation areas. Therefore, monitoring the information on area analyzing change process of are great significance to both environmental improvement management. (2) Methods: This study takes Shiyang River’s terminal lake—Qingtu Lake—and its surroundings as research area. The index wa...

Journal: :Water 2021

The Wajid aquifer is considered the main source of water for drinking and irrigation in Wadi Al-Dawasir Najran, southern region Saudi Arabia. This has been used since 1960s, due to expansion agricultural activities, overexploited. study aims understand origin, hydrochemical processes groundwater shallow unconfined, deep confined parts area. In-situ parameters (pH, temperature, EC, TDS) were mea...

Journal: :Journal of Hydrology 2023

With the aim of deepening our understanding deep-seated fluids upwelling and mixing in large regional aquifers, we performed a hydrogeochemical study twenty-two springs Contursi area (upper Sele river valley, southern Apennines) by means measurements chemical-physical parameters, major ions, trace elements, stable radioactive isotopes. Besides, realized two updated geo-structural cross-sections...

Journal: :Eng. Appl. of AI 2012
Riccardo Taormina Kwok-Wing Chau Rajandrea Sethi

Artificial Neural Networks (ANNs) have been successfully employed for predicting and forecasting groundwater levels up to some time steps ahead. In this paper, we present an application of feed forward neural networks (FFNs) for long period simulations of hourly groundwater levels in a coastal unconfined aquifer sited in the Lagoon of Venice, Italy. After initialising the model with groundwater...

Ghale-madreseh is the first point that the saline and sulfurous streams flow into Tembi River, one of the well-known saline rivers in Khuzestan province, Iran. This river is one of the main sources of increasing Karun River’s salinity, which is the largest river in Iran in terms of discharge. There are three saline and sulfurous springs (Shour-1, Shour-2m and Namak Springs) as well as a drinkab...

Frequent droughts and their consequences result in the loss of groundwater, the deficiency of nutrients, the drying of surface water resources, and substantially more exploitation of the groundwater resources, which, altogether, cause the mobilization of saline waters to groundwater tables. This will impair the capacity of the aquifers and the quality of the water. The VIKOR method was applied ...

Journal: :The Science of the total environment 2016
Issoufou Ouedraogo Pierre Defourny Marnik Vanclooster

We estimated vulnerability and pollution risk of groundwater at the pan-African scale. We therefore compiled the most recent continental scale information on soil, land use, geology, hydrogeology and climate in a Geographical Information System (GIS) at a resolution of 15 km × 15 km and at the scale of 1:60,000,000. The groundwater vulnerability map was constructed by means of the DRASTIC metho...

2013
Yuan Zhang Guomin Li

The North China Plain (NCP) is one of the places where the groundwater is most over-exploited in the world. Currently, our understanding on the spatiotemporal variability of the cones of depression in this region is fragmentary. This study intends to simulate the cones of depression in the shallow aquifer across the entire NCP during the whole period from 1960 to 2011. During the simulation, th...

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