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Co-Authors
- B. S. Sukhija
- M. N. Rao
- P. Nagabhushanam
- B. V. Lakshmi
- H. K. Gupta
- T. Madhav
- P. Chandrakala
- S. Chandra
- S. Atal
- N. S. Krishnamurthy
- k. Subrahmanyam
- R. Rangarajan
- P. Nagbhushanam
- J. V. S. Murthy
- S. Ahmed
- V. P. Dimri
- M. V. Nandakumar
- Pradeep Raj
- Simanchal Padhy
- G. B. K. Shankar
- G. Rajender Reddy
- M. R. Rao
- D. S. Mitra
- B. M. Tripati
- S. K. Sinha
- B. Bhadu
- V. R. Sastry
- G. Raghu Chandra
- N. Adithya
- S. A. Saiprasad
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Reddy, D. V.
- Current Status of Palaeoseismology in India - An Overview
Abstract Views :189 |
PDF Views:2
Authors
Affiliations
1 National Geophysical Research Institute, Hyderabad-500 007, IN
1 National Geophysical Research Institute, Hyderabad-500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 55, No 5 (2000), Pagination: 465-480Abstract
Paleoseismic investigations so far carried out in India are spread over two tectonically distinct areas, viz., the interplate seismic zone of Himalaya and the intraplate Stable Continental Region (SCR). Most of the reported paleoseismicity studies provided geological evidences like soft sediment deformation, paleoliquefaction features (like sand dykes, sand blows etc), small scale folding, faulting with disptacement of beds etc. Though the evaluation of recurrellce period of destructive seismic events is a pre-requisite for paleoseismology, no paleoseismic study in India so far has provided information on the recurrence period, except for the detailed study in the Shillong plateau, which suggested recurrence period of 400-600 yrs for major earthquakes.Keywords
Paleoseismology, Earthquake Hazard, Recurrence Period, Himalaya, Stable Continental Region.
- A perspective of alkaline Lonar Lake, Maharashtra, India with reference to its hydrochemistry
Abstract Views :255 |
PDF Views:134
Authors
Affiliations
1 CSIR-National Geophysical Research Institute, Hyderabad 500 007, IN
1 CSIR-National Geophysical Research Institute, Hyderabad 500 007, IN
Source
Current Science, Vol 109, No 5 (2015), Pagination: 965-975Abstract
The inland Lonar Lake, encompassing a circular area of about 1 sq. km is situated in Buldhana district, Maharashtra state, India. The lake is part of the Lonar crater believed to have formed due to meteoric impact. It is third largest natural salt-water lake in the world. The lake water is not only saline, but also highly alkaline. In recent years, it is believed that the alkalinity and salinity of the lake water is being diluted with increased lake water level due to external inputs like seepage of water into the lake from nearby surface reservoirs. Studies on hydrochemical and isotopic signatures of lake water, and also lake water levels were carried out for one year to understand the lake dynamics. The generated data were compared with those available in the literature. This comparison showed that the water level and hydrochemistry of lake water are controlled by the local rainfall and evaporation, and that there are no other external water inputs to the lake.Keywords
Alkaline lake, hydrochemistry, Lonar Crater, stable isotopesFull Text
References
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- Blanford, W. T., Note on the route on the Poona to Nagpur via Ahemadnagar, Jalna, Lonar, Yeotmal, Mangali and Hingumghat.Rec. Geol. Sur. India, 1868, 1, 60–65.
- La Touche, T. H. D. and Christie, W. A. K., The geology of the Lonar Lake and note on the Lonar soda deposit. Rec. Geol. Surv.India, 1911, 14(4), 266–285.
- Nandy, N. C. and Deo, V. B., Origin of Lonar Lake and its alkalinity.Tata Iron and Steel Company, Jamshedpur, 1961, vol. 8, 144–155.
- Subrahmanyam, B., Lonar crater, India: a cryptovolcanic origin. J. Geol. Soc. India, 1985, 26, 326–335.
- Nayak, V. V., Glassy objects (impactite glasses) a possible evidence for meteoritic origin of Lonar crater. Earth Planet Sci.Lett., 1972, 14, 1–6.
- Fredrickson, K. et al., Lonar Lake, India – an impact crater in Deccan Trap. Science, 1973, 180, 862–864.
- Fudali, R. F. et al., Morphology of Lonar crater, India: comparisons and implications. Moon Planets, 1980, 23, 439–515.
- Nayak, V. K., Maskelynite from the Indian impact crater at Lonar. J. Geol. Soc. India, 1993, 41, 307–312.
- Sengupta, D. Formation age of Lonar meteor crater, India. Rev. Fis. Apl. Instrum., 1997, 12, 1–7.
- Kumar, P. S., Structural effects of meteorite impact on basalt: evidence from Lonar crater, India. J. Geophys. Res., 2005, 110, 1–10, B12402; doi: 10.1029/2005JB003662.
- Chakrabarti, R. and Basu, A. R., Trace element and isotopic evidence for Archean basement in the Lonar crater impact breccia, Deccan Volcanic Province. Earth Planet Sci. Lett., 2006, 247, 197–211.
- Maloof, A. C. et al., Geology of Lonar crater. Geol. Soc. Am. Bull., 2010 122, 109–126; doi: 10.1130/B26474.1.
- Jourdan, F. F. et al., 40Ar/39Ar age of the Lonar crater and consequence for the geochronology of planetary impacts. Geology,2011, 39, 671–674.
- Badve, R. M. et al., Eutrophication of Lonar Lake, Maharashtra.Curr. Sci., 1993, 65(4), 347–351.
- Surakasi, V. P., Phylogenetic analysis of methanogenic enrichment cultures obtained from Lonar lake in India: isolation of Methanocalculus sp. and Methanoculleus sp. Microb. Ecol., 2007,54, 697–704. doi: 10.1007/s00248-007-9228-z.
- Antony, C. P., Active methylotrophs in the sediments of Lonar Lake, a saline and alkaline ecosystem formed by meteor impact.ISME J., 2010, 4, 1470–1480.
- Antony, C. P. et al., Mini review: microbiology of Lonar Lake and other soda lakes. ISME J., 2013, 7, 468–476.
- Malu, R. A., Diversity in Lonar Lake. J. Aquat. Biol., 2000, 15, 16–18.
- Babar, M. D., Geology, microecological environment and conservation of Lonar Lake, Maharashtra, India. In Environmental Management (ed. Sarkar, S. K.), 2010, ISBN 978-953-307-133-6, 258; http://cdn.intechopen.com/pdfs-wm/11853.pdf
- Jhingran, A. G. and Rao, K. V., Lonar Lake and its salinity. Rec. Geol. Surv. India, 1954, 85, 313–334.
- Choudhary, A. N. and Handa, B. K., Some aspects of the geochemistry of the Lonar Lake water. Indian J. Earth Sci., 1978, 5, 111–118.
- Muley, R. B. and Babar, M. D., Geo-environmental status of Lonar Lake, Maharastra. In Proceedings of the Workshop on Quality of Reservoir-1, WALMI, Aurangabad, 1998, pp. 28–33.
- Joshi, A. A. et al., Cultivable bacterial diversity of alkaline Lonar Lake, India. Microb. Ecol., 2008, 55, 163–172; doi:10.1007/s00248-007-9264-8.
- Tambekar, D. H. et al., Lonar Lake water: past and present. Nat. Environ. Pollut. Technol., 2010, 9(2), 217–221.
- Sukhija, B. S., Reddy, D. V., Nagabhushanam, P., Bhattacharya, S. K., Jani, R. A. and Kumar, D., Characterization of recharge processes and groundwater flow mechanisms in weathered–fractured granites of Hyderabad (India) using isotopes. Hydrogeol. J., 2006,14, 663–674.
- Sukhija, B. S., Reddy, D. V., Nagabhushanam, P. and Nandakumar, M. V., Efficiency of percolation ponds as artificial recharge structures and the controlling factors. J Geol. Soc. India, 2005, 66, 95–104.
- Sukhija, B. S., Reddy, D. V., Nandakumar, M. V. and Rama, A method for evaluation of artificial recharge through percolation tanks using environmental chloride. Groundwater, 1997, 35(1), 161–165.
- Craig, H., Isotopic variations in meteoric waters. Science, 1961, 133(3465), 1702–1703; 10.1126/science.133.3465.1702.
- Issa et al., δ18O and δD variations in some volcanic lakes on the Cameroon Volcanic Line (West Africa): generating isotopic baseline data for volcano monitoring and surveillance in Cameroon. J. Limnol., 2015, 74(1), 95–113; doi:10.4081/jlimnol.2014.966
- Komatsu, G. et al., Drainage systems of Lonar crater, India: contributions to Lonar Lake hydrology and crater degradation. Planet. Space Sci., 2014, 95, 45–55.
- Water Sprouting Phenomena Observed in Parts of Andhra Pradesh - An Explanation
Abstract Views :203 |
PDF Views:139
Authors
S. Chandra
1,
S. Atal
1,
N. S. Krishnamurthy
1,
k. Subrahmanyam
1,
R. Rangarajan
1,
D. V. Reddy
1,
P. Nagbhushanam
1,
J. V. S. Murthy
1,
S. Ahmed
1,
V. P. Dimri
1
Affiliations
1 National Geophysical Research Institute, Hyderabad - 500 007, IN
1 National Geophysical Research Institute, Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 68, No 1 (2006), Pagination: 157-159Abstract
No Abstract.Full Text
- Efficacy of Percolation Ponds as Artificial Recharge Structures and the Controlling Factors
Abstract Views :182 |
PDF Views:2
Authors
Affiliations
1 National Geophysical Research Institute, Hyderabad - 500 007, IN
1 National Geophysical Research Institute, Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 1 (2005), Pagination: 95-104Abstract
The hard rock aquifers of southern and western India, receive less than 10% precipitation as natural recharge, and are witnessing Over-Exploitation. Consequently measures are being adopted to augment groundwater resources artificially. Percolation ponds or tanks the most popular artificial recharge structures in India, are constructed across monsoon streams for the above purpose. However no detailed study was carried out to evaluate their performance in different hydrogeological environs. This paper reports the efficacy of percolation ponds, situated in different geological terrains evaluated using chloride mass balance method. Depending on the location of the percolation tanks, varied percolation fractions (of impounded water) were obtained, Basalts 0 20-0 30, Granite-Gneisses 0 30-0 45, and Sandstones 0 60, depending on the transimssion properties of rocks. In addition, soil characteristics and ambient hydrogeological regime of the area are important factors controlling the efficacy of a percolation tank.Keywords
Artificial Recharge, Percolation, Environmental Chloride Tracer, Ponds, Peninsular India.- Efficacy of Percolation Ponds as Artificial Recharge Structures and the Controlling Factors
Abstract Views :195 |
PDF Views:140
Authors
Affiliations
1 Ground Water Department, 37 LIC Colony, Opp Indira Park, Lower Tank-Bund Road, Hyderabad - 500 080, IN
2 National Geophysical Research Institute, Hyderabad - 500 007, IN
1 Ground Water Department, 37 LIC Colony, Opp Indira Park, Lower Tank-Bund Road, Hyderabad - 500 080, IN
2 National Geophysical Research Institute, Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 6 (2005), Pagination: 776-778Abstract
No Abstract.Full Text
- Eruption of Molten Rock Material from Vikarabad Area, A. P.
Abstract Views :204 |
PDF Views:145
Authors
Affiliations
1 NGRI, Hyderabad, IN
1 NGRI, Hyderabad, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 76, No 3 (2010), Pagination: 302-302Abstract
No Abstract.Full Text
- Radiocarbon Evidence of Paleo-Recharge (Pre-Saraswati Period) of Potential Deep Aquifer in Thar Desert
Abstract Views :197 |
PDF Views:0
Authors
D. V. Reddy
1,
P. Nagabhushanam
1,
M. R. Rao
2,
D. S. Mitra
3,
B. M. Tripati
3,
S. K. Sinha
3,
B. Bhadu
3
Affiliations
1 National Geophysical Research Institute (Council of Scientific and Industrial Research), Uppal Road, Hyderabad - 500 606, IN
2 Oil and Natural Gas Corp. Ltd., 9 Kaulagarh Road, Dehra Dune- 248 195, IN
3 Oil and Natural Gas Corp. Ltd., 9 Kaulagarh Road, Dehra Dune - 248 195, IN
1 National Geophysical Research Institute (Council of Scientific and Industrial Research), Uppal Road, Hyderabad - 500 606, IN
2 Oil and Natural Gas Corp. Ltd., 9 Kaulagarh Road, Dehra Dune- 248 195, IN
3 Oil and Natural Gas Corp. Ltd., 9 Kaulagarh Road, Dehra Dune - 248 195, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 77, No 3 (2011), Pagination: 239-242Abstract
The Oil and Natural Gas Corporation Limited (ONGC), India, embarked upon exploration and exploitation of deep groundwater under the project named as "Saraswati" in arid Thar desert, Rajasthan, with a societal mission of providing water to the local people and cattle. A 555 m deep well drilled by the ONGC near Jaisalmer town in 2006 encountered a potential aquifer at a depth of 450-500 m. Radiocarbon dating of this well water indicated paleorecharge to be >40,000 yr BP (uncorrected) (Before Present with respect to 1950 AD), while the medium depth (∼200 m) well waters around that area showed an age range of ∼9,000 to 17,000 yr BP (uncorrected). These waters represent pre-Saraswati era recharge, because the mighty Saraswati flowed in this region between 7000-4000 yr BP. The stable isotope (δD and δ18O) and Total Dissolved Solids (TDS) data of these waters clearly indicated absence of communication between the two aquifers (deep and medium depth). However, the extension of this deep aquifer needs to be determined.Keywords
Groundwater, Paleo-Recharge, Radiocarbon, Aquifer, Rajasthan.- Generation and Accuracy Assessment of Digital Elevation Model Using Digital Photogrammetry and Differential Global Positioning System Techniques
Abstract Views :156 |
PDF Views:113
Authors
Affiliations
1 Department of Mining Engineering, NITK, Surathkal, Mangalore-575025, IN
2 Department of Civil Engineering, NITK, Surathkal, Mangalore-575025, IN
1 Department of Mining Engineering, NITK, Surathkal, Mangalore-575025, IN
2 Department of Civil Engineering, NITK, Surathkal, Mangalore-575025, IN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 1 (2016), Pagination: 122-133Abstract
Blasting can be considered as the most crucial process in an opencast mine. It is therefore important for mining engineers to understand the effect of geological discontinuities and blast design parameters on the results of blasting. Bench height and burden are very important parameters affecting stiffness of bench. Joints alter the results of blasting, by making explosive energy utilization ineffective. Modern tools like high speed videography reveal many aspects of fragmentation process, which otherwise are difficult to visualize and understand. An attempt is made through this paper to present some of the research results of model scale studies, coupled with field study results related to bench height and joints in order to improve blast results.Keywords
Rock Fragmentation, Geological Discontinuities, Bench Height, Burden, Joint Orientation, Gas Energy, Shock Energy, High Speed Videography.Full Text