نتایج جستجو برای: aquifer vulnerability

تعداد نتایج: 50472  

Journal: :Journal of geology, geography and geoecology 2021


 In Nnewi, Anambra State Nigeria, twenty vertical electrical sounding (VES) were performed to delineate vulnerability and transmissivity of identified aquifer within the study area. Hydraulic parameters (transverse resistance, longitudinal conductivity, hydraulic conductivity transmissivity) delineated from geoelectrical (depth, thickness, apparent resistance). The geo- aquifer: resistanc...

G.H. Akbari M. Rahimi-Shahrbabaki

Existence of heavy minerals in waters in some regions causes serious environmental pollution and affects the soil and water resources quality. Soil and waters sensitive to pollutants were investigated in this research, based on the degree of sensitivity of their parameters. The samples obtained from industrial and agricultural areas for identifying water tables at higher risk and display region...

Journal: :Sustainability 2022

Population growth, increasing urbanization and industrialization, mismanagement, climate change are accountable for the rising depletion pollution of groundwater worldwide. Consequently, water security, food environmental security in jeopardy, leading to a severe concern sustainable supply on Earth. The contamination groundwater, complex hidden resource, is difficult detect treat. Therefore, it...

Journal: :Journal of contaminant hydrology 2004
Serge Brouyère Alain Dassargues Vincent Hallet

This paper presents the results of a detailed field investigation that was performed for studying groundwater recharge processes and solute downward migration mechanisms prevailing in the unsaturated zone overlying a chalk aquifer in Belgium. Various laboratory measurements were performed on core samples collected during the drilling of boreholes in the experimental site. In the field, experime...

Journal: :Ground water 2001
B T Nolan

Characteristics of nitrogen loading and aquifer susceptibility to contamination were evaluated to determine their influence on contamination of shallow ground water by nitrate. A set of 13 explanatory variables was derived from these characteristics, and variables that have a significant influence were identified using logistic regression (LR). Multivariate LR models based on more than 900 samp...

Journal: :Turkish journal of engineering 2023

Groundwater exploitation requires better understanding of the resource availability and quality/vulnerability. Geophysical techniques, pumping test, hydraulic measurement, borehole logging quality test analysis have been used in Ibulesoro, southwestern Nigeria, to hydrogeological system terms groundwater availability, aquifer delineation, evaluate physico-chemical biological contents. The study...

Journal: :Ground water 2009
Judith E Horn Thomas Harter

Domestic wells in North America and elsewhere are typically constructed at relatively shallow depths and with the sand or gravel pack extending far above the intake screen of the well (shallow well seal). The source areas of these domestic wells and the effect of an extended gravel pack on the source area are typically unknown, and few resources exist for estimating these. In this article, we u...

Journal: :Anais da Academia Brasileira de Ciencias 2007
Ricardo Hirata Alexandra Suhogusoff Amélia Fernandes

Indicators, for groundwater resources, have mostly been employed to define the present status and the degradation tendency, regarding both quantity (under- or overexploitation) and quality (natural and anthropic contamination). This work presents the application of indicators in order to draw a picture of the groundwater resources situation in the 22 Water Resource Management Units (WRMU) of th...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید