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Singh, Sushil K.
- Characterization of Different Forms of Chalcopyrite Disease through Fractal Analysis
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PDF Views:140
Authors
Affiliations
1 Department of Geology, University of Delhi, Delhi 110 007, IN
2 Department of Physics, SGTB Khalsa College, University of Delhi, Delhi 110 007, IN
1 Department of Geology, University of Delhi, Delhi 110 007, IN
2 Department of Physics, SGTB Khalsa College, University of Delhi, Delhi 110 007, IN
Source
Current Science, Vol 117, No 3 (2019), Pagination: 460-469Abstract
Complex shapes that form by natural processes are often difficult to explain using non-Euclidean geometry. Chalcopyrite disease (CD) formation, a replacement texture, demonstrates a nonlinear-fractal geometry. CD samples from three polymetallic deposits were chosen for fractal analysis. CD did not show a fractal value specific to mineralized deposits. However, fractal analysis showed consistent values for a similar form of CD, thus setting a quantitative relationship between varied forms of CD and their condition of formation. The mean fractal dimension calculated for each study area displayed a positive correlation with the peak metamorphic grade of the respective deposit. The statistical analysis (ANOVA) of fractal dimension data further delineated the differences among the three study areas.Keywords
Box Counting Method, Chalcopyrite Disease, Fractal Dimension, Replacement Texture, Statistical Analysis.Full Text
References
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- Differential Loss of Glacier Stored Water in the Indus River Basin
Abstract Views :253 |
PDF Views:160
Authors
Ashutosh Kulkarni
1,
Veena Prasad
2,
A. R. Arya
2,
Rajiv K. Chaturvedi
1,
Sushil K. Singh
3,
Sandip Oza
3
Affiliations
1 Birla Institute of Technology and Science, Pilani, Goa Campus, Goa 403 726, IN
2 DST Centre for Excellence in Climate Change, Divecha Centre for Climate Change, Indian Institute of Science, Bengaluru 560 012, IN
3 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
1 Birla Institute of Technology and Science, Pilani, Goa Campus, Goa 403 726, IN
2 DST Centre for Excellence in Climate Change, Divecha Centre for Climate Change, Indian Institute of Science, Bengaluru 560 012, IN
3 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
Source
Current Science, Vol 124, No 4 (2023), Pagination: 478-484Abstract
In this study, we assessed the glacier stored water (1,620 ± 340 Gt) using a combination of ice dynamics modelling and volume–area scaling method and estimated glacier mass loss (6.4%) from 2001 to 2013 for the Indus River basin. Results indicate that the impact of climate change is not uniform across the basin, especially the stark difference between the Western Himalayan region where the glaciers are losing mass at the rate of –0.56 ± 0.27 m.w.e. per annum and the Upper Indus where the loss is at –0.18 ± 0.11 m.w.e. per annum.Keywords
Climate Change, Glacier Stored Water, Improved Accumulation Area Ratio, Mass Balance, River Basin.Full Text
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