Virendra Kumar Saxena

Virendra Kumar Saxena
National Geophysical Research Institute | Ngri · Department of Groundwater

M.Sc, Ph.D

About

98
Publications
397,073
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Introduction
Virendra Kumar Saxena worked at the Department of Groundwater and Geothermics., National Geophysical Research Institute, Hyderabad, India. Virendra does research in History of Science ,Hydrogeology, Ecological study and Geothermal Energy. Presently Involve in Sustainability of groundwater resources and ground Water quality.
Education
March 1979 - January 1983
APS University and International School of Geothermics
Field of study
  • Geology and Geothermics

Publications

Publications (98)
Article
Full-text available
The impact of seawater intrusion was investigated using major hydrogeochemical ions to evaluate the origin of salinity in Sadras watershed located between Buckingham Canal and Bay of Bengal in the southeastern coast of India. From empirical data collected twice during pre- and post-monsoon seasons, it was found that groundwater was slightly acidic...
Article
Full-text available
It is hypothesized that groundwater major ions chemistry can be employed to determine the interaction between groundwater (GW) and saline water/seawater (SW) in costal aquifers, and that there exists a relationship between total dissolved solids with chloride, sodium, magnesium and sulphate concentrations of groundwater. This hypothesis was tested...
Article
Full-text available
Fluoride (F) contamination study had been carried out to see its allocation in Kurmapalli watershed, Nalgonda district, Andhra Pradesh, India. The study area is located about 60 km SE of Hyderabad city. The groundwater is the main source of water for their living. The groundwater in villages and its surrounding are affected by fluoride contaminatio...
Book
Full-text available
Astrology has its existence from the lost 1500 years or even more. Casting of horoscope is data based and governed by some fixed principles. Thus costing of horoscope, precise analysis,synthesis, formulations and correct approach are the important parts of astrological study and for prediction.
Article
Full-text available
Hydrochemical study had been carried out on the groundwater resources of Potharlanka Island, Krishna delta, India. Groundwater samples were collected and analyzed at 42 sites in December 2001 and October 2006. A comparative study of hydrochemical data indicates: groundwater is mildly alkaline with a pH of 7.0-8.2; electrical conductivity (EC) varie...
Article
Full-text available
Nitrate concentrations were measured in the groundwater samples of Krishna delta, India. The results indicate a large variation of nitrate from 10 - 135 mg/l. In 79 groundwater samples, about 39% shows high nitrate contents (>50 mg/l), which is more than the permissible limits in drinking water. In north Krishna delta 49% and in south Krishna delta...
Chapter
Full-text available
The mostly geological and geophysical techniques are in practice for the delineation of water bearing fractures in the hard rock areas. The attempt has been made to develop some technique, which may be simple, more informative and also cost effective as well as give groundwater quality information. Electrical conductivity measurements were conducte...
Chapter
Full-text available
Studied area is a tribal area of Warangal District, Andhra Pradesh (A.P.), India. This is about 1,500 km2 and has different types of rock formations such as granite gneisses, sandstones, pakhals, and alluvium, etc. This area was facing groundwater problems since two decades. A large number of shallow bore wells were drilled. These bore wells are di...
Article
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For the delineation of water-bearing fractures in hard rock areas, a new hydro-chemical technique has been developed which is based on electrical conductivity (EC) logs. The EC logs were carried out in experimental shallow bore wells (≈50m) in three different parts of India. A sharp variation in EC was observed near water-bearing fractures in hard...
Article
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The overexploitation of groundwater in some parts of the country induces water quality degradation. The untreated industrial effluents discharged on the surface causes severe groundwater pollution in the industrial belt of the country. This poses a problem of supply of hazard free drinking water in the rural parts of the country. There are about 80...
Article
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Most parts of India are facing anthropogenic ground- water pollution. Such types of pollution are mainly enrichments of various chemical parameters such as nitrate, hardness, metallic trace elements and micr o- biological organisms. The overexploitation of ground- water in some parts of the country induces water- quality degradation. Untreated indu...
Article
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The distribution trends of trace elements over North and South Krishna delta were examined in relation to fresh-, brackish- and saline-water zonations. Strontium and boron have shown significant variations in fresh-, brackish- and saline-water environment. Strontium has shown a variation from 23 to 1500 μg/l in freshwater, 1650 to 2760 μg/l in brac...
Article
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Reports on the occurrence of arsenic in groundwater resources and the associated health hazards due to human consumption have been made from various parts of India and the world during the past few years. Arsenic in groundwater is present in various species like H 3AsO 3, H 2AsO 3, HAsO 3, H 3AsO 4, H 2AsO 4, and HAsO 4. The toxicity of arsenic may...
Book
Full-text available
This book covers the hot springs of India, there occurrences, mechanism , genesis, water rock interaction, aquifer temperatures and assessment for potential geothermal resources etc. Used the approach of hydro geochemistry and thermochemical modelling to solve the various problems related to explore and exploitation of geothermal energy in India......
Article
Full-text available
A hydrochemical study has been carried out on the fresh groundwater resources of Potharlanka, Krishna Delta, India. Groundwater samples were collected at 58 sites and analyzed in June and December 2001. The groundwater is mildly alkaline with a pH of 7.2–8.2, electrical conductivity (EC) varies from 645–4,700 µS/cm in June 2001 (pre-monsoon) and fr...
Article
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Geochemical study of groundwater from 58 selected fluoride-rich areas in different parts of India that includes eight states indicates that: 1. These groundwaters are alkaline in pH (7.4-8.8) and their electrical conductivity varies from 530-2,680 S/cm and fluoride concentration from 1.7-6.1 mg/l. Presence of fluoride-bearing minerals in the host r...
Conference Paper
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The Puttur hot spring( 45 degree centrigate ), of Karnataka is located in the bank of Netravati river, southern shield of India and manifest water with a discharge rate of 46lit/min. Geological information of this area is peninsular gneisses of precambarian age. ........
Conference Paper
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Aquifer in granite terrain are known to have fluoride content almost all levels in and often much beyond the permissible limit. Among others, geochemical dissolution process are understood to be the most dominant factorfor the variability ....
Article
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Fluoride-rich groundwater is well known in granite aquifers in India and the world. Although its presence is necessary, chances of health risk become high if the fluoride concentration is more than the permissible limit of 1.5 mg/l (World Health Organization, WHO) in drinking water. Fluoride mainly occurs in groundwater as a natural constituent. Re...
Article
Full-text available
Fluoride-rich groundwater is well known in granite aquifers in India and the world. Although its presence is necessary, chances of health risk become high if the fluoride concentration is more than the permissible limit of 1.5 mg/l (World Health Organization, WHO) in drinking water. Fluoride mainly occurs in groundwater as a natural constituent. Re...
Article
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In modern geochemical investigations (1 ) rare earth elements (REEs) are used extensively as sensitive indicators of geological processes. Thus precise estimation of REEs is essential and existence of elemental geochemical references standards is often required. Recently ......
Article
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National Geophysical Research institute campus is surrounded by several industries that discharge pollutants into the atmosphere. The effect of this discharge on air quality in NGRI campus and its surrounding areas has been investigated. 31 air samples were collected at regular intervals, using air monitoring systems. The analysis of the samples sh...
Article
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Geochemical studies on fifteen geothermal manifestations (38–70°C) from the Konkan coast geothermal province of India have been used to evaluate the reservoir temperatures. Activity studies of the minerals and the waters present in the reservoirs suggest that the thermal waters are in equilibrium with montmorillonite, kaolinite and quartz at about...
Article
The chemical analyses of gases and waters from 16 hot springs (34-97oC) from four geothermal provinces of India have been used to evaluate reservoir T. The pH of deep thermal waters and pCO2 gas have been estimated at probable rock-water equilibrium T. Sub-surface T for geothermal manifestations as estimated by gas and silica geothermometers are in...
Article
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Geochemical studies have been carried out on water samples collected from Tatapani and Salbardi hot springs. The waters of these hot springs are classified as NaHCO3 type. Waters in deep aquifers are associated with quartz, shale and clay terrains. Activity studies of the minerals and the waters present in the aquifers suggest that the thermal wate...
Article
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The results of a chemical study of thermal waters from three hot springs, two water discharges in a mine at 180 m depth, and four wells drilled for exploration of coal and water resources in the Godavari valley indicate: (1) a deep flow path within the Lower Gondwanas (Upper Carboniferous-Lower Triassic) for Agnigundala thermal water which has been...
Article
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Results of a chemical study of the fluids from drill holes and hot springs of Puga and Chumatang areas in the northwestern part of the Himalaya are presented and discussed in this paper. The thermal waters of Puga and Chumatang are of Na-HCO3-Cl and Na-HCO3 types, respectively. A comparison between these waters, their chemical classification and ac...
Thesis
Full-text available
A detailed geochemical investigation on the thermal waters of Konkani Coast and Godavari valley geothermal provinces of India, has brought to light vital information about these fields,particularly,with regard to their geochemical evaluation,origin and geothermal potential. The main findings of the present studies are described as follows :
Article
Full-text available
An analysis of various geodata has revealed several geothermal provinces of India, where subsurface thermal waters of varying chemical characters occur, The Himalaya orogen is a part of one main geothermal province,........