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Click on the Projects to view the details |
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 Determination of Groundwater Velocities through Radiotracer Techniques in the Urban-Industrial Aquifers of Visakhapatnam |
Principal Investigator:
Prof. N V B S S Prasad,
Department of Geophysics,
Andhra University,
Visakhapatnam – 530 003
Objectives: |
- To find out the isotopic composition (18O, D and Tritium) of rain, surface and groundwater in the region to establish their interrelationship and to find out the mixing and recharge pattern of groundwater in the study area
- To study the migration of the pollutants by laboratory experiments using artificial isotopes
- To determine the velocity and direction of groundwater in shallow aquifers to predict the rate of movement of the pollutants and their dispersion in the groundwater in the areas close to the industrial establishments
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| Salient Findings: |
- The vulnerable zones of the three industrial localities are demarcated based on the results of ionic and stable isotopic (Oxygen-18 and Deuterium) analysis
- The mass transport model results predicted that by the year 2025, apart from a few wells in the Yarada foothill, the aquifers of the industrial area will be in a vulnerable condition and will not be suitable for domestic and other purposes.
- It is predicted to have the same aerial distribution of ‘Contaminant Migration’ and total dissolved solids levels both for first and second layers of the industrial localities
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| Hydrogeochemical and Isotopic Studies in the Gadilam River Basin, Tamil Nadu, India |
Principal Investigator:
Dr S Chidambaram,
Department of Earth Sciences,
Annamalai University,
Annamalai Nagar – 608 002 |
Objectives: |
- Spatial and temporal variation of the water chemistry in the region
- The systematic study to determine probable recharge zones of the area
- Saltwater - fresh water mixing and the extent of intrusion.
- Rock - water interaction and mixing process
- To understand extent of industrial pollution and the main factors responsible for water Chemistry
- Monitoring and Management of Pesticide Pollution in an Irrigated Command and Hilly Ecosystem
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| Salient Findings: |
- Groundwater is near acidic to alkaline in nature which can be related to leaching of ions followed by weathering and anthropogenic impacts
- Rock - water interaction was also identified as one of the factor contributing variations in water chemistry
- Isotopic study revealed that recharge from meteoric source in sedimentary terrain and rock - water interaction with significant evaporation prevailing in hard rock region
- Identified the contribution of river water in recharging ground water system
- Summer and southwest monsoon indicated static environment, whereas northeast monsoon and post monsoon indicated flushing environment in the basin
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| Monitoring and Management of Pesticide Pollution in an Irrigated Command and Hilly Ecosystem |
Principal Investigator:
Dr. R. Jayakumar,
Tamil Nadu Agricultural University,
Coimbatore, 641 003 |
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| Objectives: |
- Monitoring point source pollution in drainage channels, river and other water bodies
- Sorption kinetics and movement of pesticides in soils
- Simulation models for predicting pesticide pollution in water bodies
- Suggested management practices to alleviate pollution
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| Salient Findings: |
- The adsorption, desorption, movement (relative mobility), degradation and persistent studies of important pesticides in three soil samples representing major soil series was carried out
- The pesticides viz., butachlor, chlorpyriphos, atrazine, carbendazim, malathion and DDT were detected in some water samples
- In the drainage water samples, butachlor, chlorpyriphos and atrazine were found in limited extent
- Whereas none of the pesticides were detected in well water samples and stream water samples
- Waters of Nanjanad area of Nilgiris District are found to be free of pesticides
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