ajmalkoti.github.io

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ajaymalkoti@ngri.res.in
ajmalkoti.github.io

Ajay Malkoti
Seismic Group
CSIR-NGRI

Projects

  1. Title: Quantification of detection threshold and sensitivity of seismic techniques for monitoring of CO2 storage sites in India; Role: co-PI; Duration: 3 years ( 2024-2027); Sponsoring agency: Department of Science and Technology. (Yet to start)
  2. Title: A fractional Gaussian fractal-based seismic inversion package for the high-resolution subsurface image; Role: PI; Duration: 2 years (Aug 2022-July 2024); Sponsoring agency: Council of Scientific and Industrial Research.
    Results for f3 dataset are provided below.

Research

My published/ArXived articles can be downloaded from HERE

Journal articles

  1. Vadapalli, V.Uma, Malkoti, A., Vedanti, N.; Dimri, V.P.; Guruhappa, H., (2022), Field scale and site-specific permeability of sandstone reservoirs using a stabilized Monte–Carlo algorithm: A case study, Geophysics, 87(6):B337–B350,DOI:10.1190/geo2022-0255.1 .
  2. Malkoti, A., Hanasoge, S.M., & Plessix, R.E. (2022). Upscaling Acoustic Wave Equation using Renormalization Group Theory, Geophysics, 87(4):T281, DOI:10.1190/geo2021-0572.1
  3. Malkoti, A., Datta, A., & Hanasoge, S. M. (2021). Rayleigh wave H/V ratio measurement from ambient noise cross-correlations, and its sensitivity to Vp: a numerical study. Geophysical Journal International. DOI:10.1093/gji/ggab228
  4. Li, L., Tan, J., Zhang, D., Malkoti, A., Abakumov, I, & Xie, Y. (2021). FDwave3D: a MATLAB solver for the 3D anisotropic wave equation using the finite-difference method. Computational Geosciences, DOI:10.1007/s10596-021-10060-3
  5. Vedanti, N., Malkoti, A., Pandey, O. P., & Shrivastava, J. P. (2018). Ultrasonic P-and S-wave attenuation and petrophysical properties of Deccan Flood Basalts, India, as revealed by Borehole Studies. Pure and Applied Geophysics, 175(8), 2905-2930. DOI:10.1007/s00024-018-1817-x
  6. Malkoti, A., Vedanti, N., & Tiwari, R. K. (2018). An algorithm for fast elastic wave simulation using a vectorized finite difference operator. Computers & Geosciences, 116, 23-31. DOI:10.1016/j.cageo.2018.04.002
  7. Malkoti, A., Vedanti, N., & Tiwari, R. K. (2019). A highly efficient implicit finite difference scheme for acoustic wave propagation. Journal of Applied Geophysics, 161, 204-215. DOI:10.1016/j.jappgeo.2018.12.017

Expanded Abstracts

  1. Malkoti, A., , Hanasoge, S.M., R. E. Plessix, (2022), Upscaling acoustic wave equation using Renormalization Group theory. SEG Technical Program Expanded Abstracts: 2507-2511.
  2. Vedanti, N., Lakshmi, K. J. P., Dutta, S., Malkoti, A., Pandey, O.P., Sen, M. K., (2015), Investigation of Petrophysical Properties and Ultrasonic P-and S- Wave attenuation in Deccan Flood Basalts, India, SEG Technical Program Expanded Abstracts : 3274-3278. DOI: 10.1190/segam2015-5858683.1
  3. Malkoti, A., Vedanti, N., Kunagu, P., and Tiwari, R. K., (2015), Modeling viscoelastic seismic wave propagation in Deccan flood basalt, western India, SEG Technical Program Expanded Abstracts : 3764-3768. DOI: 10.1190/segam2015-5898555.1

Conference papers

  1. Malkoti, A., Vedanti, N., 2019, Efficient Seismic Simulation for a Highly Attenuating Media, International Union of Geodesy and Geophysics 27 th General assembly, Montreal, Canada.
  2. Vedanti, N., Malkoti, A., 2019, Petrophysical Characterization of two formations of Deccan Flood basalt for improved sub-basalt imaging, International Union of Geodesy and Geophysics 27 th General assembly, Montreal, Canada.
  3. Malkoti, A., Vedanti, N., Tiwari, R.K., 2017, High fidelity Numerical simulation for scaler wave. Abstract presented at AEG 39th Annual Convention at Banaras Hindu University, Varanasi, India.
  4. Malik, R., Malkoti, A., Vedanti, N., Dimri, V. P., 2017. 1-D Full Waveform Inversion using Micro Genetic Algorithm. Abstract presented at AEG 39th Annual Convention at Banaras Hindu University, Varanasi, India.
  5. Vedanti, N., Malkoti, A., Dutta, S., Pandey, O.P., 2015. Elastic Properties of Ambenali and Poladpur Formations of DVP: New Findings. National conference on Paleogene of the Indian Subcontinent, 23- 24 April, Birbal Sahni Institute for Palaeobotany, Lucknow.
  6. Malkoti, A., 2014, Inversion of well log data for better determination of petrophysical parameters, Abstract presented at IGU 51st Annual convention at Kurukshetra University, Haryana, India. pp.198.

PhD thesis

  1. Malkoti, A., 2019. An Accurate And Efficient Viscoelastic Seismic Modeling Scheme: An Example from Deccan volcanic Province, India, Physical Science Dept., AcSIR-NGRI.