Drought impacts on long-term hydrodynamic behavior of groundwater in the tertiary–quaternary aquifer system of Shahrekord Plain, Iran

2013 ◽  
Vol 70 (2) ◽  
pp. 927-942 ◽  
Author(s):  
Mahdi Radfar ◽  
Marc Van Camp ◽  
Kristine Walraevens
Keyword(s):  
Hydrodynamic Behavior ◽  
Quaternary Aquifer ◽  
Aquifer System ◽  
Drought Impacts

scholarly journals Spatially Explicit Modeling of Long-Term Drought Impacts on Crop Production in Austria

2013 ◽  
Vol 02 (03) ◽  
pp. 1-11 ◽  
Author(s):  
Franziska Strauss ◽  
Elena Moltchanova ◽  
Erwin Schmid
Keyword(s):  
Crop Production ◽  
Spatially Explicit ◽  
Drought Impacts ◽  
Spatially Explicit Modeling

scholarly journals Assessing the long-term sustainability of the groundwater resources in the Bacchiglione basin (Veneto, Italy) with the Mann–Kendall test: suggestions for higher reliability

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Mara Meggiorin ◽  
Giulia Passadore ◽  
Silvia Bertoldo ◽  
Andrea Sottani ◽  
Andrea Rinaldo
Keyword(s):  
Groundwater Level ◽  
Water Cycle ◽  
Groundwater Resources ◽  
Sustainable Use ◽  
Kendall Test ◽  
Groundwater System ◽  
Aquifer System ◽  
Mann Kendall Test ◽  
Status Assessment

The social, economic, and ecological importance of the aquifer system within the Bacchiglione basin (Veneto, IT) is noteworthy, and there is considerable disagreement among previous studies over its sustainable use. Investigating the long-term quantitative sustainability of the groundwater system, this study presents a statistical methodology that can be applied to similar cases. Using a combination of robust and widely used techniques, we apply the seasonal Mann–Kendall test and the Sen’s slope estimator to the recorded groundwater level timeseries. The analysis is carried out on a large and heterogeneous proprietary dataset gathering hourly groundwater level timeseries at 79 control points, acquired during the period 2005–2019. The test identifies significant decreasing trends for most of the available records, unlike previous studies on the quantitative status of the same resource which covered the domain investigated here for a slightly different period: 2000–2014. The present study questions the reason for such diverging results by focusing on the method’s accuracy. After carrying out a Fourier analysis on the longest available timeseries, for studies of groundwater status assessment this work suggests applying the Mann–Kendall test to timeseries longer than 20 years (because otherwise the analysis would be affected by interannual periodicities of the water cycle). A further analysis of two 60-year-long monthly timeseries between 1960 and 2020 supports the actual sustainable use of the groundwater resource, the past deployment of the groundwater resources notwithstanding. Results thus prove more reliable, and meaningful inferences on the longterm sustainability of the groundwater system are possible.

The legacy and drivers of groundwater nutrients and pesticides in an agriculturally impacted Quaternary aquifer system

2021 ◽  
Vol 753 ◽  
pp. 142010
Author(s):  
Haile A. Shishaye ◽  
Douglas R. Tait ◽  
Damien T. Maher ◽  
Kevin M. Befus ◽  
Dirk Erler ◽  
...  
Keyword(s):  
Quaternary Aquifer ◽  
Aquifer System

Assessment of Long-Term Salinity Changes in an Irrigated Stream-Aquifer System

1985 ◽  
Vol 21 (11) ◽  
pp. 1611-1624 ◽  
Author(s):  
Leonard F. Konikow ◽  
Mark Person
Keyword(s):  
Aquifer System ◽  
Salinity Changes

scholarly journals Long-term geochemical evaluation of the coastal Chicot aquifer system, Louisiana, USA

2016 ◽  
Vol 533 ◽  
pp. 320-331 ◽  
Author(s):  
David M. Borrok ◽  
Whitney P. Broussard
Keyword(s):  
Aquifer System ◽  
Geochemical Evaluation

scholarly journals Comparative assessment of radial collector well elements with a new approach

2017 ◽  
pp. 37-45
Author(s):  
Milenko Pusic ◽  
Milan Dimkic
Keyword(s):  
Global Scale ◽  
Hydrodynamic Analysis ◽  
New Approach ◽  
Aquifer System ◽  
Well Design ◽  
Novel Approach ◽  
Bivalent Iron ◽  
Groundwater Source ◽  
Radial Collector Well

In radial collector well design or rehabilitation it is extremely important to define the capacity of the location and the long-term sustainable discharge of the well. Where incrustation occurs, groundwater entrance velocities at horizontal screens also need to be determined. At Belgrade Groundwater Source, maximum permissible screen entrance velocities are correlated with the oxic state of the aquifer, expressed via the redox potential, and the concentration of bivalent iron in the groundwater. The entrance velocities limit the rate of screen incrustation and are based on the maximum permissible increase in local hydraulic resistance at the screens. This is a novel approach on a global scale. In the case of anoxic groundwater, the derived permissible entrance velocities are much lower than estimated by standard, commonly used methods. The new approach is believed to be a significant contribution to well design. Jaroslav Cerni Institute for the Development of Water Resources (JCI) has developed software for estimating 3D groundwater flow, which relatively easily and realistically simulates horizontal screens and riverbed configuration and conductivity. The software is an effective tool for determining the capacity of the location and of the radial collector well itself. It is especially useful where the aquifer system comprises a semi-permeable interbed between the water-bearing layer, in which the screens are emplaced, and the overlying strata. Acomparative hydrodynamic analysis of two wells at Belgrade Groundwater Source is presented in the paper. One of the wells (RB-16) clearly reflects the presence of a semi-permeable interbed, whereas the other (RB-46) does not.

Time series study for groundwater level evaluation in monitoring well

2021 ◽  
Vol 13 (2) ◽  
Author(s):  
Rubens Oliveira da Cunha Júnior ◽  
João Victor Mariano da Silva
Keyword(s):  
Time Series ◽  
Groundwater Level ◽  
Sedimentary Basin ◽  
Precipitation Data ◽  
Environmental Aspects ◽  
Aquifer System ◽  
Groundwater Levels ◽  
Monitoring Well ◽  
Series Study

Climate and hydrogeological conditions of the Brazilian semi-arid demand sustainable and efficient water solutions. Groundwater monitoring programs are tools to subsidize the decision-making in this sense. In Ceará state, the monitoring of Araripe sedimentary basin aquifers is important for the development of the region. In this scenario, the present work aimed to study the groundwater level through an exploratory analysis of time series. The study area covered the eastern portion of the Araripe sedimentary basin, in the municipality of Milagres, in Ceará state. As the object of this study, it was obtained the time series of monthly average groundwater levels in a monitoring well of RIMAS/CPRM and installed in the Middle Aquifer System. Graphical and numerical methods were applied for the identification and description of time series main characteristics. Precipitation data in the study area were used to evaluate the system recharge. Results were discussed according to the environmental aspects of the study area. As a result, it was possible the identification and description of time series patterns such as trend and seasonality through the applied methods. It is also highlighted the sharp drawdown of groundwater levels in long term in the time series, reflecting the quantitative state of the aquifer system, as well as the groundwater recharge during the rainy season of the region, evidenced by the study of time series seasonality together with the precipitation data..

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