Integrated studies for characterization of lineaments used to locate groundwater potential zones in a hard rock region of Karnataka, India

Chandra, Subash; Rao, V. Ananda; Krishnamurthy, N.; Dutta, Subhrajit; Ahmed, Shakeel

doi:10.1007/s10040-005-0480-3

Cited by 30 publications

(19 citation statements)

References 24 publications

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“…Its typical width is on the order of 40-50 m based on field observations and resistivity tomography profiles. According to geophysical profiles and drill-cutting observations, the dolerite dyke is only weathered in the first 6-8 m below ground surface in agreement with a previous study on another dyke by Chandra et al (2006). Historically, water during the 8-month long dry season was provided to the village by a small tank (earth dam) and, later during the twentieth century, shallow groundwater was exploited by 12 dug wells for small-scale irrigation.…”

Section: Local Context and Methodssupporting

confidence: 64%

“…This variability can be explained by geological factors and the impact of human activities: a dolerite dyke cuts across the study area from west to east and acts as an impermeable barrier to flow as already described in other studies (Babiker and Gudmundsson 2004;Chandra et al 2006). After monsoon recharge, the two aquifer compartments separated by the dyke may become hydraulically connection temporarily as indicated by piezometric mapping (Fig.…”

Section: Discussionmentioning

confidence: 99%

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The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India

Perrin¹,

Ahmed

Hunkeler

2011

Hydrogeol J

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Crystalline aquifers of semi-arid southern India represent a vital water resource for farming communities. A field study is described that characterizes the hydrodynamic functioning of intensively exploited crystalline aquifers at local scale based on detailed well monitoring during one hydrological year. The main results show large water-table fluctuations caused by monsoon recharge and pumping, high spatial variability in well discharges, and a decrease of well yields as the water table decreases. Groundwater chemistry is also spatially variable with the existence of aquifer compartments within which mixing occurs. The observed variability and compartmentalization is explained by geological heterogeneities which play a major role in controlling groundwater flow and connectivity in the aquifer. The position of the water table within the fracture network will determine the degree of connectivity between aquifer compartments and well discharge. The presented aquifer conceptual model suggests several consequences: (1) over-exploitation leads to a drop in well discharge, (2) intensive pumping may contribute to the hydraulic containment of contaminants, (3) groundwater quality is highly variable even at local scale, (4) geological discontinuities may be used to assist in the location of drinking-supply wells, (5) modeling should integrate threshold effects due to water-table fluctuations.

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Section: Local Context and Methodssupporting

confidence: 64%

Section: Discussionmentioning

confidence: 99%

The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India

Perrin¹,

Ahmed

Hunkeler

2011

Hydrogeol J

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“…The diurnal changes have been done by taking the readings one hour once at the base station and correcting the field magnetic values by subtracting the base station magnetic value [17]. After the corrections, magnetic profiles were generated ( Figure 2).…”

Section: Diurnal Correctionmentioning

confidence: 99%

Spatial Confirmation of Major Lineament and Groundwater Exploration using Ground Magnetic Method near Mecheri Village, Salem District of Tamil Nadu, India

Muthamilselvan¹,

Srimadhi²,

hini³

et al. 2017

J Geol Geophys

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“…Generally, the recorded aquifers at this area are expected complex in nature and hydrogeological parameters because of these aquifers are normally traversed by faults and fractures zones distribution that makes the groundwater dynamics more complex. Accordingly, Lattman and Parizek (1964), Siddiqui and Parizek (1971), Parizek (1976), Frohlich et al (1996), Chandra et al (2006), Solomon and Ghebreab (2008) concluded that the detection of faults and their trends are interesting in detecting groundwater aquifers and their continuity and discontinuity and also in controlling its flowing. Also, these faults affect more the lateral resistivity variation of the subsurface layers.…”

Section: Introductionmentioning

confidence: 99%

Effect of structure and lithological heterogeneity on the correlation coefficient between the electric–hydraulic parameters of the aquifer, Eastern Desert, Egypt

Ammar¹,

Kamal²

2019

Appl Water Sci

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Discovering, studying and determining the hydrogeoelectrical properties of the aquifer at the new area by using resistivity sounding parameters are difficult and need high accuracy in measurements and interpretation. The hydrogeological settings of the area of northwest Al Hurghada town are not studied on large scale by using the surface geophysical measurements before this study. So, for this aim, 24 vertical electrical soundings (VESs) were measured and interpreted. Discovering of groundwater aquifer along the main wadi called Wadi Om Dehas especially to the Far East, adds to determine the main lithology, shaly sandstone, sandstone and sandstone to limestone, of the aquifer and the complicated structural setting at form of inferred faults by using VESs curves, were the main tenets at this study for studying their effects on the correlation coefficient (R 2) between the electric and hydraulic parameters of the aquifer. Accordingly, the two suggested locations were chosen for drilling and their results were as expected from VESs interpretation. The interpretation results using the true resistivity values assisted in delineating the complicated facies, heterogeneity of aquifer rock units and in expecting the flow direction of groundwater along the area. The relationship between the resistivity with transverse resistance and longitudinal conductance was carried out and assisted strongly in separating aquifer rock units. The heterogeneity and water salinity at different directions affected the strong relationship between the resistivity and transverse resistance where in case of shaly sandstone and sandstone it was weak but strong in case of sandstone to limestone. The hydraulic conductivity of aquifer was calculated using the transverse resistance. The transverse resistance was used in calculating the transmissivity and concluded that there is complicating and changing in its values from depth to others and from location to other due to the effect of structure and heterogeneity. This confirmed that the geological and hydrogeological settings of the area are more complicated. So, according to the relationship between the hydraulic conductivity (K h) and resistivity (ρ t), it can be said that it is strongly controlled by the nature of the aquifer rock units either heterogeneous or homogeneous. Accordingly, it can only use the last creating empirical equation in calculating the expected transmissivity values of the recorded water-bearing sandstone to limestone rocks at this area with taking into account the calculated value of R 2 between both depending on the statistical analysis.

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Integrated studies for characterization of lineaments used to locate groundwater potential zones in a hard rock region of Karnataka, India

Cited by 30 publications

References 24 publications

The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India

The effects of geological heterogeneities and piezometric fluctuations on groundwater flow and chemistry in a hard-rock aquifer, southern India

Spatial Confirmation of Major Lineament and Groundwater Exploration using Ground Magnetic Method near Mecheri Village, Salem District of Tamil Nadu, India

Effect of structure and lithological heterogeneity on the correlation coefficient between the electric–hydraulic parameters of the aquifer, Eastern Desert, Egypt

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