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Roy, P. N. S.
- Identification of Active Seismicity by Fractal Analysis for Understanding the Recent Geodynamics of Central Himalaya
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Authors
P. N. S. Roy
1,
S. K. Mondal
1
Affiliations
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad, Jharkhand - 826 004, IN
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad, Jharkhand - 826 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 79, No 4 (2012), Pagination: 353-360Abstract
Seismicity along the Himalayan front is mostly attributed to the processes of collision between the Indian and the Eurasian plates resulting in the under-thrusting of the Indian Peninsula underneath the Himalaya. The dynamics of the region bears very complex components which require in-depth understanding. Here the overall rate of crustal shortening since ∼11 Ma is ∼21mm/yr, which is comparable to modern rate of under-thrusting of the northern Indian plate beneath the Himalaya. The region experienced a large number of great earthquakes for the last 100-120 years causing massive destruction. Here an attempt has been made to understand the seismicity pattern of the region using fractal correlation dimension and hence used for the detection of active seismicity. Some clusters of seismicity were found to be indicative of seismically very active zones. Such clusters may enlighten the understanding of recent complex dynamics of Himalayan zone.Keywords
Fractal Dimension, Geodynamics, Seismicity, Himalaya.
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