Earth, Atmosphere & Environment Sciences
Title : | Source localized modelling of central depth of anisotropy beneath the north-eastern Himalaya and tectonic implications |
Area of research : | Earth, Atmosphere & Environment Sciences |
Principal Investigator : | Dr. Debasis Mohanty, CSIR-North - East Institute Of Science And Technology, Assam |
Timeline Start Year : | 2023 |
Timeline End Year : | 2026 |
Contact info : | devlinkan06@yahoo.com |
Details
Executive Summary : | Seismic anisotropy is instrumental in understanding the under earth mechanisms leading to the current tectonics of a region. Though, the major implications of splitting parameters are towards the deformation pattern analysis with understanding the mantle flow mechanisms and thickness of the anisotropic layers, these are devoid of providing the actual central depth of anisotropy beneath a complex tectonic domain, hence restricts the researchers from a broad and comprehensive image of the under earth dynamics and deformation patterns. The current project, tries to overcome this issue by modeling the the central depth corresponding to the source localization of anisotropy beneath the complex northeast Himalayan region and tries to give a better comprehensive picture of the deformation mechanisms. A special approach of spatial coherency method is applied in between the splitting parameters from this particular area and the maximum coherency between them at a particular depth is modeled through an iterative grid search method with particular grid sizes and central depths. A mathematical function named as ' Variation Factor' is computed to decipher the relation of coherency between splitting parameters with respect to the central depth of anisotropy. The minimum of variation factor corresponding to a particular depth, is treated as the best possible solution for the model and accordingly the central depth for the source localized anisotropy beneath this region is calculated. This project aims at modeling the central depth of anisotropy beneath the most complex terrains in the Northeastern Himalayan region, like Nepal Himalaya, North East India, Shillong Mass, Indo-Burmese Range and the Eastern Himalayan Syntaxis regions. The depth models will certainly lead us to understand the deformation patterns in more detailed and comprehensive manner, and will give a robust picture of complex geoodynamics beneath this North East Himalayan region. This invention will definitely help in understanding the complex tectonics, with a special emphasis on recent deformations in this complex northeast Himalayan terrains. |
Total Budget (INR): | 6,60,000 |
Organizations involved