1. Tectonic studies on
- Central Seismic Gap (CSG) - NW Himalaya // Andaman - Sumatra subduction setting // Alcock-Seawell Rise // 85-90 degree E ridge
- Krishna-Godavari (KG) Basin // Abenaki formation // Amsterdam-St Paul island structure
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Figure: Sumatra Subduction: (left) Tomography & PreSDM combined, (middle) Backthrusting, (right) checker board tests
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Figure: 3D Group velocity across HFT
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Figure: Sumatra Subduction: (left) earthquakes and fault system, (right) gravity modelling
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Figure: Himalayan Fault system
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2. Hydrocarbon/Ore/Near Surface studies on
- Downward Continuation, Tomography and FWI // Poroelasticity // Simulating Gas hydrates in KG, Mahanadi & Cascadia
- Fluid migration, Slumping studies in KG // Identification of Mn ore deposits
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Figure: Downwand continuation technique
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Figure: Modelling of hydrate system from Mahanadi basin
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Figure: Dispersion analsyis of a hydrocarbon system
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Figure: Dispersion studies of MASW data
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Figure: Spectral decomposition on Abenaki data
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3. Algorithm development on
- Full waveform inversion (FWI) in acoustic, elastic and poroelastic medium // Frequency dependent AVO analysis
- Ambient Noise Tomography (ANT) // Advanced spectral decomposition tools // SuperVirtual Interferometry (SVI) // Wide angle MASW
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Figure: FWI on Marmosi model
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Figure: SVI on synthetic data
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Figure: WACLSSA comparison
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