Processes affecting groundwater temperature patterns in a coastal aquifer

Calvache, María Luisa; Duque, Carlos; Fontalva, José Manuel Gómez; Crespo, Francisco José

doi:10.1007/bf03326211

Cited by 25 publications

(15 citation statements)

References 32 publications

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“…For groundwater levels farther from the stream, such as the water level in well a4 (at a distance of 8.9 km from the Donghe River), there was no obvious response to the runoff events observed. The effect of the river recharge decreases with the distance from the water course because there is less mixing with infiltrated river water (Calvache et al, 2011).…”

Section: Response Of Groundwater Dynamics To River Flowsmentioning

confidence: 99%

Shallow groundwater dynamics and its driving forces in extremely arid areas: a case study of the lower Heihe River in northwestern China

Wang

Pozdniakov

et al. 2013

Hydrol. Process.

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Abstract:Shallow groundwater is an important source of water for the maintenance and restoration of ecosystems in arid environments, which necessitates a deeper understanding of its complex spatial and temporal dynamics driven by hydrological processes. This study explores the dominant hydrological processes that control the shallow groundwater dynamics in the Gobi Desert-riparian-oasis system of the lower Heihe River, a typical arid inland river basin located in northwestern China. The groundwater level and temperature were monitored in 14 shallow wells at 30-min intervals during the 2010-2012 period. After combining this information with meteorological and hydrological data, a comprehensive analysis was conducted to understand the dynamic behaviour of the shallow groundwater system and to determine the dominant factors that control the groundwater flow processes. The results of the study indicate notably large temporal and spatial variations in both the groundwater level and temperature. Noticeable fluctuations in the groundwater level (0.5-1 m) and temperature (4-8 C) were observed in the riparian zone, evidencing a clear river influence. In comparison, the groundwater fluctuations in the Gobi Desert were more stable (the annual variations of the water table were less than 0.5 m, and the water temperature varied by no more than 2 C). Strong variations in the groundwater table (1.5-5.0 m/year) and temperature (1.5-6.5 C), mainly caused by surface flood irrigation and groundwater pumping, were observed in the oasis area. The investigated sites were categorized into three types that reflect the dominant hydrological processes: (1) the riparian zone, dominated by riverbank filtration and groundwater evapotranspiration; (2) the Gobi Desert area, controlled by groundwater evaporation and lateral recharge; and (3) the oasis area, dominated by groundwater evapotranspiration as well as surfacegroundwater interactions caused by human activities.

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Section: Response Of Groundwater Dynamics To River Flowsmentioning

confidence: 99%

Shallow groundwater dynamics and its driving forces in extremely arid areas: a case study of the lower Heihe River in northwestern China

Wang

Pozdniakov

et al. 2013

Hydrol. Process.

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“…Electrical resistivity survey was carried out in the study area to understand the subsurface characteristics. This method is advantageous as it can be carried out rapidly and is relatively inexpensive (Choudhury et al 2001;Calvache et al 2011). Electrical direct current is applied between the two current electrodes rooted in the ground and the electrical potential between two other electrodes is measured in this method.…”

Section: Field Investigation Methodsmentioning

confidence: 99%

Percolation pond as a method of managed aquifer recharge in a coastal saline aquifer: A case study on the criteria for site selection and its impacts

Raicy

Elango

2017

J Earth Syst Sci

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Percolation ponds have become very popular methods of managed aquifer recharge due to their low cost, ease of construction and the participation and assistance of community. The objective of this study is to assess the feasibility of a percolation pond in a saline aquifer, north of Chennai, Tamil Nadu, India, to improve the storage and quality of groundwater. Electrical resistivity and ground penetrating radar methods were used to understand the subsurface conditions of the area. From these investigations, a suitable location was chosen and a percolation pond was constructed. The quality and quantity of groundwater of the nearby area has improved due to the recharge from the pond. This study indicated that a simple excavation without providing support for the slope and paving of the bunds helped to improve the groundwater quality. This method can be easily adoptable by farmers who can have a small pond within their farm to collect and store the rainwater. The cost of water recharged from this pond works out to be about 0.225 Re/l. Cleaning the pond by scrapping the accumulated sediments needs to be done once a year. Due to the small dimension and high saline groundwater, considerable improvement in quality at greater depths could not be achieved. However, ponds of larger size with recharge shafts can directly recharge the aquifer and help to improve the quality of water at greater depths.

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“…4), as mentioned in Section 3. Finally, the profiles for P-11 highlight the pattern of the recharge zones (Calvache et al 2011); seawater comes in from the sea to reach the groundwater collecting system of the desalination plants. The particles released on the sea floor reach the catchments through the aquifer in the simulation (see path-lines from the seaward side in Fig.…”

Section: Calibrationmentioning

confidence: 99%

Simulation and consequences of successive anthropogenic activity in the Agua Amarga coastal aquifer (southeast Spain)

Manteca

2013

Hydrological Sciences Journal

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The Agua Amarga coastal aquifer has been the object of a succession of anthropogenic interventions over the last 90 years: (a) the operation of saltworks from 1925 to 1975; (b) the withdrawal, since 2003, of groundwater from the aquifer along the coast line; and (c) the programme of pouring seawater over the salt marsh, carried out since 2009, to recover the piezometric levels and the soil moisture conditions. For a better understanding of how these past and present human activities have affected the natural groundwater regime, and to validate certain hypotheses concerning the interpretation of experimental data on temperature depth profiles and piezometric and salinity changes, a numerical fluid flow and solute transport model was designed and applied to the period 1925-2010, using SEAWAT. This model reproduces, in a qualitative and quantitative way, the flow and transport processes that operated during this time, as well as the behaviour of the seawater wedge.

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Processes affecting groundwater temperature patterns in a coastal aquifer

Cited by 25 publications

References 32 publications

Shallow groundwater dynamics and its driving forces in extremely arid areas: a case study of the lower Heihe River in northwestern China

Shallow groundwater dynamics and its driving forces in extremely arid areas: a case study of the lower Heihe River in northwestern China

Percolation pond as a method of managed aquifer recharge in a coastal saline aquifer: A case study on the criteria for site selection and its impacts

Simulation and consequences of successive anthropogenic activity in the Agua Amarga coastal aquifer (southeast Spain)

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