Research Interests
Seismic wave scattering & propagation, Seismic imaging with ambient noise, AI for computer vision & image processing in Seismics, Diffusion model for denoising & synthesis of seismic images, ML in time series data analysis, Signal processing, Physics-based simulations of earthquake ground motions, Fractals & non-linear dynamics in earthquake source physics
BioSketch
Research
Aftershock activity and frequency dependent low coda-Qc in the epicentral region of the 1999 Chamoli earthquake of Mw 6.4
2001
Mandal, P., Padhy, S.., et. al. | Springer
Journal: Pure and Applied Geophys. Pages: 1719-1735 , Volumes: 158 ,
Intermittent Criticality on regional scale in Bhuj
2004
Padhy S | Wiley
Journal: Geophysical J. Int Pages: 676-680 , Volumes: 158 ,
A Scattering model for seismic attenuation and its global applications
2005
Padhy S | Elsevier
Journal: Physics of the Earth and Planetary Interiors Pages: 1-12 , Volumes: 148 ,
Rescaled range fractal analysis of a seismogram for identification of signals from an earthquake
2005
Padhy S | Springer
Journal: Current Science Pages: 637-641 , Volumes: 87 ,
High pore fluid pressures at Bhuj inferred from 90–flips in shear wave polarizations
2006
Padhy, S., and Crampin, S | Wiley
Journal: Geophysical J. Int Pages: 370-376. , Volumes: 164 ,
Seismogram Envelope Inversion using a multiple isotropic scattering model - Application to aftershocks of the 2001, Bhuj earthquake.
2007
Padhy, S., Wegler, U., and Korn, M | Seismological Society of America
Journal: Bulletin of Seismological Society of America Pages: 222-233 , Volumes: 97 ,
Synthesis of expected ground motion using Semi-empirical Green’s Function approach and its comparison with observed accelerations in Garhwal Himalaya
2008
Subhadra, N., Padhy, S. et. al. | GSI
Journal: Indian Minerals (Special Issue) Pages: 201-212 , Volumes: 61 (3-4) ,
Characteristics of body wave attenuation in the Bhuj crust.
2009
Padhy S | Seismological Society of America
Journal: Bulletin of Seismological Society of America Pages: 3300-3313 , Volumes: 99 ,
Inversion of seismogram envelopes using a multiple isotropic scattering model in Garhwal Himalaya
2009
Padhy S | Seismological Society of America
Journal: Bulletin of Seismological Society of America Pages: 727-740 , Volumes: 99 ,
Attenuation of high-frequency seismic waves in northeast India
2010
Padhy, S., and Subhadra, N | Wiley
Journal: Geophys. J. Int. Pages: 453-467 , Volumes: 181 ,
Frequency dependent attenuation of P- and S-waves in the northeast India
2010
Padhy, S., and Subhadra, N | Wiley
Journal: Geophys. J. Int Pages: 1052-1060. , Volumes: 183 ,
Strong ground motions from the 2011 off-the Pacific-Coast-of-Tohoku, Japan (Mw=9.0) earthquake obtained from a dense nationwide seismic network
2011
Furumura, T., Takemura, S., Noguchi, S., Takemoto, T., Maeda, T., Iwai, K., and Padhy, S | Springer
Journal: Landslides Pages: 3. 10.1007/s10346-011-0279-3 ,
Strong ground motions from the 2011 off-the Pacific-Coast-of-Tohoku, Japan (Mw=9.0) earthquake obtained from a dense nationwide seismic network
2011
Furumura, T., Takemura, S., Noguchi, S., Takemoto, T., Maeda, T., Iwai, K., and Padhy, S | Springer
Journal: Landslides
Crustal heterogeneity in the 2007 Noto-Hanto earthquake area and its geodynamical implications
2011
Padhy, S., Mishra, OP., Zhao, D., and Wei, W. | Elsevier
Journal: Tectonophysics Pages: 509 , Volumes: 55-68 ,
Frequency dependent attenuation of body and coda waves in the Andaman Sea basin
2011
Padhy, S., Subhadra, N. and Kayal, JR | Seismological Society of America
Journal: Bulletin Seismological Society of America Pages: 109-125. , Volumes: 101 ,
Spatial and temporal variations in coda attenuation associated with the 2011 off the Pacific coast of Tohoku, Japan (Mw 9) earthquake
2013
Padhy, S., Takemura, S., Takemoto, T., Maeda, T., and Furumura, T | Seismological Society of America
Journal: Bulletin of Seismological Society of America Pages: 1411-1428 , Volumes: 103 (2B) ,
Separation of intrinsic and scattering seismic wave attenuation in Northeast India.
2013
Padhy, S., and Subhadra, N | Wiley
Journal: Geophysical Journal International Pages: 1892-1903 , Volumes: 195 (3) ,
Decoupling of Pacific subduction zone guided waves beneath central Japan: Evidence for thin slab
2014
Padhy, S., Furumura, T., and Maeda | Wiley
Journal: Journal Geophysical Research (Solid Earth) Pages: 8478-8501 , Volumes: 119 (11) ,
Effects of errors and biases on the scaling of earthquake spatial pattern: application to the 2004 Sumatra–Andaman sequence.
2015
Padhy, S., Mishra, OP., Subhadra, N., Dimri, VP., Singh, OP., Chakrabortty, GK | Springer
Journal: Natural Hazards Pages: 75-96 , Volumes: 77 (1) ,
Site specific ground motion simulation and seismic response analysis for microzonation of Nanded city, India
2015
Subhadra, N., Padhy, S., et. al. | Springer
Journal: Natural Hazards Pages: 915-938 , Volumes: 78 (2) ,
The plate kinematics of Burmese micro-plate relative to its surroundings.
2016
Akilan, A., Balaji, S., Padhy, S., et al. | Springer
Journal: Arabian Journal of Geosciences Pages: 333 , Volumes: 9(5) ,
Changes in atmospheric water content associated with an unusual high snowfall during June 2004 at Maitri station (Schirmacher Oasis, East Antarctica) and the role of South West Indian ridge geodynamics
2016
Akilan, A., Azeez, KKA., Schuh, H., Padhy, S., et al. | Springer
Journal: Natural Hazards Pages: 563-574 , Volumes: 83(1) ,
Spectral scaling and seismic efficiency for earthquakes in northeast India
2016
Padhy, S., Subhadra, N | Seismological Society of America
Journal: Bulletin of the Seismological Society of America Pages: 2. 1613-1627 , Volumes: 106(4) ,
Enhanced waveguide effect for deep‐focus earthquakes in the subducting Pacific slab produced by a metastable olivine wedge
2016
Furumura, T., Kennett, BLN., and Padhy, S | Wiley
Journal: Journal of Geophysical Research: Solid Earth Pages: 1. 6779-6796 , Volumes: 121(9) ,
Depth dependent azimuthal anisotropy in Madagascar island from ambient noise tomography
2020
NI Adimah, S Padhy | Elsevier
Journal: Tectonophysics
Seismicity and structure of the Indian subcontinent
2020
JR Kayal, S Padhy | Springer
Journal: Episodes Journal of International Geoscience Pages: 650-664 , Volumes: 43(1) ,
Ambient noise Rayleigh wave tomography across the Madagascar island
2020
NI Adimah, S Padhy | Wiley
Journal: Geophysical Journal International Pages: 1657-1676 , Volumes: 220 (3) ,
Apparent scaling of virus surface roughness – An example from the pandemic SARS-nCoV
2020
Padhy, S. and Dimri, V.P | Elsevier
Journal: Physica D: Nonlinear Phenomena Pages: 132704 , Volumes: 414 ,
Perturbations in atmospheric gaseous components over coastal Antarctica detected in GPS signals and its natural origin to volcanic eruption
2019
Akilan, A., Abdul Azeez, K., Schuh, H., Padhy, S. et. al. | Elsecier
Journal: Polar Science Pages: 69-76 , Volumes: 19 ,
Characterizing spatial heterogeneity based on the b-value and fractal analyses of the 2015 Nepal earthquake sequence
2018
Subhadra, N., Padhy, S., and Dimri, VP | Elsevier
Journal: Tectonophysics Pages: 154-162 , Volumes: 722 ,
Evaluation of site effects on ground motions based one response equivalent-linear site response analysis and liquefaction potential in Chennai, south India
2018
Subhadra, N., Padhy, S., et al | Springer
Journal: Journal of Seismology Pages: 1075-1093 , Volumes: 22 (4) ,
Co-seismic and Post-seismic Changes in ZTD and TEC of the 2015 Nepal Earthquake
2021
A Akilan, S Padhy, VP Dimri, H Schuh, KK Azeez | Springer
Journal: Pure and Applied Geophysics Pages: 1-16 ,
Frequency dependence of attenuation components including mantle leakage in Garhwal Himalaya based on a modified MLTWA method
2021
S Padhy and N Subhadra | Wiley
Journal: Geophysical Journal International Pages: 2156-2179 , Volumes: 227(3) ,
Regional variability in ground motion amplitude in Western Himalaya
2023
N. Subhadra, S. Padhy, and D. Srinagesh | Springer
Journal: Journal of Seismology Pages: 455-471 , Volumes: 27 ,
A High-resolution 3-D Shear Velocity Model for Cameroon using Ambient Noise Tomography: Constraints from the CPSO algorithm
2025
Singh, S.P., Padhy, S. & Silwal, V | Wiley
Journal: Geophysical Journal International Pages: ggaf227 , Volumes: 242(2) ,
Seismic Response of the Hi-Net Sites in Japan to Incident Teleseismic P-Waves from the 2008 Wenchuan Earthquake
2025
Simanchal Padhy | Springer
Journal: Jour. Geol. Soc. India Pages: 850-854 , Volumes: 101(6) ,
Investigating 2D shear waves velocity (Vs) structure beneath Garhwal Himalaya, Uttarakhand, India, using microtremor H/V spectral ratios and surface wave dispersion measurements
2025
Kumar, S., Padhy, S. & Kumar, N | Springer
Journal: Journal of Seismology Pages: 419-437 , Volumes: 29 ,
Honors And Awards
Teaching Engagements
Students
Department of Earth Sciences, IIT Roorkee
Monitoring of heterogeneous media using Passive Seismic Interferometry
Department of Earth Sciences, IIT Roorkee
Broad-band earthquake ground motion modeling in north-west Himalayas
Indian Institute of Technology Roorkee
Investigating crust and upper mantle structure with teleseismic wave attenuation in NW Himalayas
Ekta Yadav (PhD in DS, MFSDSAI, IITR)
Indian Institute of Technology Roorkee
Seismic imaging with deep learning approach
Pilli Vishnuvardhan (M.Tech in AI/DS)
MFSDSAI, IIT Roorkee
Seismic waveform denoising with Generative Diffusion models
Pratik P. Singh (M.Tech in AI/DS)
MFSDSAI, IIT Roorkee
Denoising of seismic signals using Deep Neural Networks
Banwari Lal (M.Tech in AI/DS)
MFSDSAI, IIT Roorkee
Detecting Causality in Time Series Modeling in the Deep Learning Framework
Ravindra Samria (M.Tech Thesis)
MFSDSAI, IIT Roorkee
Denoising and Reconstruction of Cryo-SEM Images with Weiner Filtering
Gaurav Ranjan (M.Tech in AI/DS)
MFSDSAI, IIT Roorkee
Automated classification of seismic signals with Continuous Random Forests
MFSDSAI, IIT Roorkee
Deep convolutional neural network for inverse problems in imaging
MFSDSAI, IIT Roorkee
Deep preconditioners and their application to seismic wavefield processing
MFSDSAI, IIT Roorkee
The importance of transfer learning in seismic modeling and imaging
MFSDSAI, IIT Roorkee
Denoising pre-stack random noise using unsupervised DL method
Abhishek Baghel & Sachin Gupta
MFSDSAI, IIT Roorkee
Cold diffusion models for enhanced seismic denoising
Sajal Singh & Vedant Vardhan
MFSDSAI, IIT Roorkee
Deep learning for seismic velocity inversion
Samyak Ajmera & Pratham Patel
MFSDSAI, IIT Roorkee
Physics-inspired machine learning for seismic modelling and imaging in complex media
Earth Sciences Department, IIT Roorkee
Stochastic modeling and simulations of ground motions using complex discrete wavelet transform and Gaussian mixture model
Earth Sciences Department, IIT Roorkee
Waveform modeling of earthquakes for seismic wave attenuation
Earth Sciences Department, IIT Roorkee
Seimic response modelling using physics based convolutional neural network
Miscellaneous
