Venkatesan .D | Periyar University (original) (raw)
Papers by Venkatesan .D
International Journal of Engineering Applied Sciences and Technology, 2019
Water-level fluctuations are a natural phenomenon that occurs in almost all aquatic ecosystems. W... more Water-level fluctuations are a natural phenomenon that occurs in almost all aquatic ecosystems. With the increased population growth the world has seen in recent years, the resources that were once plentiful are becoming scarcer. Human-induced stressors such as increasing consumptive use of water are often linked to regions with significant growth in population. These stressors have the effect of lowering lake levels and reducing downstream flows, a major area of concern because of adverse economic and environmental impacts associated with progressive lowering of water levels. Chennai's water resources have been increasingly stressed by climate change and population growth. The secondary data (2007 to 2013) were collected from the Chennai Metro Water and sewage board for this analysis. Assessment of long-term impacts of projected changes in climate, population, land use and land cover, and groundwater availability on local water resources is critical to sustainable development. Water level depletion led to a drought. In this paper, an attempt has been made to investigate the groundwater level fluctuation with respect to nearby reservoir water level depletion and rainfall variability and also studying the water scarcity in Chennai city.
EnviroGeoChimica Acta, 2016
Hydrogeochemical investigations were carried out in Salem taluk of Tamil Nadu, India to identify ... more Hydrogeochemical investigations were carried out in Salem taluk of Tamil Nadu, India to identify the suitability of water quality and the major geochemical processes that regulate groundwater chemistry. A total of 23 groundwater samples were collected from open wells in pre-monsoon (May 2013) and post-monsoon (December 2013) and analyzed for pH, EC, TDS, calcium, magnesium, sodium, potassium, carbonate, bicarbonate, chloride, nitrate, sulfate and fluoride. Geochemical data were interpreted using SAR, Na %, RSC, CAI & Wilcox diagram which revealed that 85 % of the groundwater is fit for domestic and irrigation purpose. In Pre monsoon and Post monsoon seasons, most of the samples are Ca-Mg-Cl type and some samples fall in Ca-HCO3 and Na-Cl type.
Rainfall data are used for a variety of purposes and are required at a range of time scales. Real... more Rainfall data are used for a variety of purposes and are required at a range of time scales. Real time rainfall data are required for flood forecasting and hydropower and reservoir operation. Summaries of storm rainfall event data are required for assessment of the severity of events at weekly or monthly time scales. The present study examines the general rainfall pattern of Kerala, Tamil Nadu and Pondicherry, using yearly rainfall data for 61 years (1951-2012). The frequency of occurrence of rainfall of various magnitudes is also important in the application of mathematical models for synthesizing hydrological data. Departure analysis in the study area suggested decrease in annual rainfall and increasing drought condition in the study area.
International Journal of Engineering Applied Sciences and Technology, 2019
Water-level fluctuations are a natural phenomenon that occurs in almost all aquatic ecosystems. W... more Water-level fluctuations are a natural phenomenon that occurs in almost all aquatic ecosystems. With the increased population growth the world has seen in recent years, the resources that were once plentiful are becoming scarcer. Human-induced stressors such as increasing consumptive use of water are often linked to regions with significant growth in population. These stressors have the effect of lowering lake levels and reducing downstream flows, a major area of concern because of adverse economic and environmental impacts associated with progressive lowering of water levels. Chennai's water resources have been increasingly stressed by climate change and population growth. The secondary data (2007 to 2013) were collected from the Chennai Metro Water and sewage board for this analysis. Assessment of long-term impacts of projected changes in climate, population, land use and land cover, and groundwater availability on local water resources is critical to sustainable development. Water level depletion led to a drought. In this paper, an attempt has been made to investigate the groundwater level fluctuation with respect to nearby reservoir water level depletion and rainfall variability and also studying the water scarcity in Chennai city.
EnviroGeoChimica Acta, 2016
Hydrogeochemical investigations were carried out in Salem taluk of Tamil Nadu, India to identify ... more Hydrogeochemical investigations were carried out in Salem taluk of Tamil Nadu, India to identify the suitability of water quality and the major geochemical processes that regulate groundwater chemistry. A total of 23 groundwater samples were collected from open wells in pre-monsoon (May 2013) and post-monsoon (December 2013) and analyzed for pH, EC, TDS, calcium, magnesium, sodium, potassium, carbonate, bicarbonate, chloride, nitrate, sulfate and fluoride. Geochemical data were interpreted using SAR, Na %, RSC, CAI & Wilcox diagram which revealed that 85 % of the groundwater is fit for domestic and irrigation purpose. In Pre monsoon and Post monsoon seasons, most of the samples are Ca-Mg-Cl type and some samples fall in Ca-HCO3 and Na-Cl type.
Rainfall data are used for a variety of purposes and are required at a range of time scales. Real... more Rainfall data are used for a variety of purposes and are required at a range of time scales. Real time rainfall data are required for flood forecasting and hydropower and reservoir operation. Summaries of storm rainfall event data are required for assessment of the severity of events at weekly or monthly time scales. The present study examines the general rainfall pattern of Kerala, Tamil Nadu and Pondicherry, using yearly rainfall data for 61 years (1951-2012). The frequency of occurrence of rainfall of various magnitudes is also important in the application of mathematical models for synthesizing hydrological data. Departure analysis in the study area suggested decrease in annual rainfall and increasing drought condition in the study area.