scholarly journals Hydrogeochemical processes, mixing and isotope tracing in hard rock aquifers and surface waters from the Subarnarekha River Basin, (east Singhbhum District, Jharkhand State, India)

2007 ◽  
Vol 15 (8) ◽  
pp. 1535-1552 ◽  
Author(s):  
Ph. Négrel ◽  
B. Lemière ◽  
H. Machard de Grammont ◽  
P. Billaud ◽  
B. Sengupta
Keyword(s):  
River Basin ◽  
Surface Waters ◽  
Hard Rock ◽  
Hydrogeochemical Processes ◽  
Isotope Tracing ◽  
Subarnarekha River ◽  
Hard Rock Aquifers ◽  
Subarnarekha River Basin

scholarly journals Fluvial geochemistry of Subarnarekha River basin, India

2018 ◽  
Vol 127 (8) ◽  
Author(s):  
Abhay Kumar Singh ◽  
Soma Giri ◽  
Aaditya Chaturvedi
Keyword(s):  
River Basin ◽  
Subarnarekha River ◽  
Subarnarekha River Basin

scholarly journals Groundwater Potential Assessment Using 2-D Resistivity Method In Kluang, Johor (Malaysia)

Warta Geologi ◽  
2020 ◽  
Vol 46 (3) ◽  
pp. 220-224
Author(s):  
Nazrin Rahman ◽  
◽  
Edy Tonnizam Mohamad ◽  
Rosli Saad ◽  
◽  
...  
Keyword(s):  
Surface Waters ◽  
Hard Rock ◽  
Water Source ◽  
Unconfined Aquifer ◽  
Groundwater Potential ◽  
Suitable Alternative ◽  
Resistivity Method ◽  
Hard Rock Aquifers ◽  
Increasing Demand ◽  
Groundwater Source

Sources of clean water are decreasing due to rapid usage, contaminated surface waters, pollution and dry season. The dependence on the existing water source is not enough to fulfil the increasing demand of population in Malaysia. In order to overcome the problem, groundwater source is the most suitable alternative. 2-D resistivity method was carried out in a granitic area of Kluang, Johor to delineate and locate groundwater resource. 5 survey lines were conducted by using ABEM SAS4000 terrameter and electrode selector which were connected to 41 electrodes through lund cables. Pole-dipole array was chosen in this study for deeper penetration. Collected data were processed by using RES2DINV software to produce inversion model which was then exported to Surfer8 software for visualisation and interpretation. The result shows that most of the study area consist of granite with different level of fracturing. Unconfined aquifer was found at depths of 0 to 50 m. Confined aquifers can be seen at two different zones. They exhibit same properties at three parallel lines, R1-R3 and show continuity between them. It is predicted that the aquifers flow in the southwest to northeast direction. The hard rock aquifers are highly recommended to be drilled as they contain a large amount of fresh water for further usage.

scholarly journals Assessment of hydrological response in Subarnarekha river basin under anticipated climate change scenarios

2020 ◽  
Keyword(s):  
Climate Change ◽  
River Basin ◽  
General Circulation ◽  
Circulation Model ◽  
Climate Modelling ◽  
Climate Change Scenarios ◽  
Hydrological Response ◽  
Study Region ◽  
Subarnarekha River ◽  
Subarnarekha River Basin

<p>Two hydrological climate modelling techniques, general circulation model (GCM) and hypothetical climate change scenarios, were used to analyse the hydrological response to the anticipated climate change scenarios in the Subarnarekha river basin in Eastern India. Both models verified individually for the same river basin and a comparative performance of the models was evaluated to relate the two models for the near (2014-2040) period climate. The hydrological response under the anticipated climate change in the Subarnarekha river basin is well assessed by GCM under the RCP 8.5 scenarios compared to the RCPs 4.5. Results indicate GCM best suited over the hypothetical climate change scenarios as GCM has demonstrated their potential in accurately reproducing the past observed climatic changes. The strong performance of the hypothetical climate change scenarios model, particularly for warming climate scenarios, suggests that it may have distinct advantages for the analysis of water balance components in the river basin. The monthly streamflows of Subarnarekha river basin was simulated using a total of 14 years (2000-2013) daily observed streamflow data in the ArcSWAT model integrated with model calibration and uncertainty analysis by means of SUFI-2 algorithm. The results indicate during the calibration the coefficient of determination (R2) and Nash-Sutcliff Efficiency (NSE) were reported as 0.98 and 0.97, respectively, while during the validation the R2 and NSE were obtained as 0.94 and 0.94, respectively, confirms the hydrological model performance was very good both in calibration and validation. The obtained climate change water impact index (ICCWI) values reveal the Subarnarekha river basin is more responsive to climate change. The reduction in precipitation along with the significant warming under the projected future climate is likely to reduce availability of water substantially in the study region. This work would be useful for the effective management of water resources for sustainable agriculture and in mitigating natural hazards such as droughts and floods in the study region.</p>

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