Refine by
Aquifer Analysis Articles & Analysis
17 articles found
When your environmental data is handled by multiple team members, labs, and stakeholders, it can be easy to feel unsure about its quality. On top of that, you need to cross-check against regulatory requirements. Reviewing and editing your data takes time, leading to project delays and compromising efficiency. To improve your data confidence, here are some steps you can keep in mind: Automation: ...
The hydrogeology of the Victor mine area was characterized over three relatively short winter field seasons using packer tests, pumping tests, step-drawdown tests, and downhole logging (particularly production or “spinner” logs) to define the lateral and vertical variation in the hydraulic conductivity of the carbonate aquifer. Based on analysis of ...
Steve Peterson, lead author of the study and a scientist with the agency explained: An assessment like this has not been done since the USGS High Plains Regional Aquifer-System Analysis (RASA) study completed in the 1980s, so this effort represents a substantial update of the technology and science beyond what was available during that time. ...
In this research, a novel approach for environmental risk assessment on groundwater pollution is applied. By combination of aquifer vulnerability DRASTIC map, pollution severity and prioritizing of the plain regions by the TOPSIS method, more sensitive regions of Qazvin aquifer in Iran are identified. ...
Assessment of groundwater vulnerability to pollution was conducted by the DRASTIC method in central Poland, in the Vistula River valley. The results of this study have shown that 68.18% of the study area has a low pollution potential and 31.2% has a medium pollution potential. Single-parameter and map removal sensitivity analyses were conducted to evaluate the relative importance of the ...
The slug test is still one of the simplest and cost-effective methods to interpret the hydraulic parameters for aquifer analysis. This study introduces two new estimation approaches for the slug test, the time shift method (TSM) and arc-length matching method (AMM), to identify aquifer parameters in a reliable and accurate manner, which was ...
This paper addresses law and policy issues relating to managed aquifer recharge (MAR). Based on an analysis of the National Water Policy of India and water polices and laws of the Indian states, a concrete case study, namely Chennai metropolitan area, has been studied in detail. ...
Synthetic examples have been simulated for homogeneous, layered, as well as for low and medium heterogeneous aquifer systems. A stochastic analysis of heterogeneous aquifers has been done using a Monte Carlo simulation method. ...
The average concentration in the lower Pleistocene aquifer was 86 μg/L, slightly higher compared with the average of 78 μg/L in the upper Holocene aquifer. Interestingly, regression analysis revealed that in the Holocene aquifer, depth of wells influenced arsenic concentrations significantly. Such an influence, ...
Consequently, where there is statistically significant variation in the natural hydrogeology an intrawell analysis is the preferred statistical approach. The intrawell analysis is fundamentally different from the interwell analysis. While the interwell analysis compares compliance wells against a background composed of ...
Defining aquifer permeability distribution accurately over large areas is often debated in hydrogeology. ...
The results show that the main hydrochemical facies of the aquifer (Na+, K+ – Cl− SO4 2−) represents 73% of the total wells. ...
In this way, a sensitivity analysis was performed to calculate the longitudinal dispersivities by varying the hydraulic conductivity and the hydraulic gradient. As a simulation exercise, a sensitivity analysis was also carried out to calculate the travel time that a particle would require to reach a certain distance depending on the longitudinal dispersivity ...
Multivariate statistical analyses such as principal component analysis (PCA) and hierarchical cluster analysis (HCA) were applied to the standardized data set of eleven groundwater quality parameters (i.e. pH, Ca2+, Mg2+, Na+, K+, Fe3+, alkalinity, NO3−, Cl−, SO42−, TDS) collected during the post-monsoon and the summer seasons in order to elicit hydrologic and ...
Multivariate and geostatistical techniques were employed to investigate major contamination types and its spatial characteristics in the study area. Principal Component Analysis (PCA) reveals that salinity (Factor 1) and nutrient (Factor 2) are very predominant contaminants in the shallow coastal aquifer. The factor (F1 and F2) scores of each well during three ...
Most ethanol plants in the United States use aquifer systems for their water supply (see Figure 1), and an in-depth aquifer analysis must be completed before a plant can be constructed or expanded. ...
Groundwater remediation evaluations typically include cleanup time projections. Current batch flushing-rate equations and analytical models often used to estimate groundwater cleanup rates typically underestimate cleanup times, with a major factor the flawed assumption of aquifer homogeneity. Numerical modelling of groundwater flow and contaminant transport is a time-intensive and costly ...