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Valdiya, K. S.
- Damming Rivers in the Tectonically Resurgent Uttarakhand Himalaya
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PDF Views:101
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1 Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560 064, IN
1 Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560 064, IN
Source
Current Science, Vol 106, No 12 (2014), Pagination: 1658-1668Abstract
In the fault-ridden, seismically and tectonically active belts recurrently ravaged by excessive rains and resultant landslides in Uttarakhand, a very large number of big and small dams are being constructed and planned. Quite many of these projects suffered crippling damages during the 2013 disaster as mountain slopes slid down and floodwater severely eroded stream banks and dumped huge volumes of sediments on critical facilities. If the idea is to have environment-friendly power projects, then the planners and dam builders must not ignore the geological reality of the geodynamically sensitive region. Better sites for dams can be explored far upstream of the Main Central Thrust Zone.Keywords
Hydroelectric Projects, Dams, Landslides, Seismicity.Full Text
- Geological Marvels, Hallowed Shrines and Unification of People of India
Abstract Views :285 |
PDF Views:156
Authors
Affiliations
1 Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560 064, IN
1 Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560 064, IN
Source
Current Science, Vol 110, No 6 (2016), Pagination: 987-995Abstract
Spectacular landforms and extraordinary geological features sculptured by uncommon earth processes occur in different parts of the Indian subcontinent. Presumably, unable to unravel the mysteries of their origin, and realizing that singularly odd features located in picturesque places attract believers and non-believers alike, the leading lights of the society of ancient India invested them with the aura of divinity and established shrines of the commonly venerated deity. Influencing people belonging to diverse racial-ethnic groups inhabiting different parts of the country, speaking languages belonging to disparate groups, indulging in different socio-cultural practices and eating and dressing differently, to go on regular visits to these hallowed sites or seats of deity, the visionary sages and seers of the ancient India endeavoured successfully to promote interactions of visitors to these geological marvels located in different parts of the country and bring about crossfertilization of thoughts and cultural elements, and thus the unification of the largest section of the population.Full Text
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- Anomalous Weather Events in Central Himalaya: Real-World Observations and Some Questions
Abstract Views :253 |
PDF Views:85
Authors
Affiliations
1 Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560 064, IN
1 Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560 064, IN
Source
Current Science, Vol 119, No 1 (2020), Pagination: 19-25Abstract
The central sector of the Himalayan province is witnessing inordinately frequent incidences of extreme weather, unending cycles of prolonged droughts and very short spells of excessive rainfall over geographically limited areas, absence of ‘April Showers’ before the onset of summer monsoon, and delayed arrival of the Indian summer monsoon. Are these happenings related to merely the rise in atmospheric and surface temperatures due to global warming, or are they caused by the excess presence of biogenic carbon generated by rampant burning of agricultural residues and wastes, and uncontrolled forest fires? One would also like to know whether the western disturbances and/or the mid-latitude interactions have a role in these distressing developments. The simplistic answer that all these anomalous happenings are ‘the combined effect of global warming enhanced by anthropogenic influences’ is hardly convincing to the laymen who solicit answers to these questions from experts – in a language free from technical jargon.Keywords
Biogenic Carbon, Cloudbursts, Droughts, Global Warming, Winter Disturbances.Full Text
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