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Prof. Sohom Ray
Sohom Ray Assistant Professor +91-01332-28XXXX Website
Research Interests
  • Physics of frictional sliding and its relevance to geological faults.
  • Mathematical modelling in the field of tectonophysics and seismology.
  • Nonlinear dynamics and partial differential equations.
  • Numerical and approximate solution of partial differential equations.
  • Solid and fracture mechanics and their relevance to (many ways of) slip on geological faults.
Academic Background
  • Ph.D. (thesis on earthquake physics), Civil and Envir. Eng., Tufts Univ., Massachusetts, USA (Sept. ’13-Aug. ’19).
  • M.Tech. in Applied Geophysics, Earth Sciences, IIT Roorkee (2008-11).
  • B.Sc. in Physics (Hons.), Hindu College, Delhi University (2005-08).
Professional Background
  • Assistant Professor, Earthquake Eng., IIT Roorkee (present).
  • Post-Doctoral fellow, Dalhousie Univ., Halifax, NS, Canada (Nov. ’19-Oct. ’20).
  • Geophysicist, Coal India Limited (Sept. ’11-Aug. ’13).
Summer/Winter Workshops
  • June ’19, International Centre for Mechanical Science (CISM), Udine, Italy. Coupled Processes in Fracture Propagation in Geo-Materials: from Hydraulic Fractures to Earthquakes.
  • Nov. ’14, Winter school, Cargese, Corsica, France. Earthquakes: nucleation, triggering and relationship with aseismic processes.
Formal Teaching Experience
  • Statics and dynamics (TA)
  • Strength of materials (TA)
Invited Talks
  • Southern California Earthquake Center, SEAS Workshop, Jan. ’20.
    Slip complexity on faults with heterogeneous friction (online talk)
  • Stanford Earth, Department seminar, March ’19.
    Nonlinear instability and diffusion of fault slip rate.
  • UMass Amherst, Nonlinear Waves Seminar, 2019.
    Aseismic and seismic slip on geological faults
  • Applied Math Seminar, Tufts University, 2018, Oral presentation,
    Earthquake nucleation on faults: a finite-time instability problem.
  • Gordon Research Seminar, 2018.
    Earthquake nucleation on faults under a multitude of length scales of frictional heterogeneity.
Selected Publications
  • Sohom Ray (2019), Frictional heterogeneities can promote disordered slip evolution on faults. EarthArXiv. September 3. doi:10.31223/ (preprint)
  • Sohom Ray and Viesca R. C. (2019), Homogenization of fault frictional properties. Geophysical Journal International, DOI:
  • Sohom Ray and Viesca R. C. (2017), Earthquake nucleation on faults with heterogeneous frictional properties, normal stress. Journal of Geophysical Research: Solid Earth, DOI: 10.1002/2017JB014521.
Selected Conferences and Meetings
  • Gordon Research Conference, July ’18.
    Earthquake nucleation on faults under a multitude of length scales of frictional heterogeneity.
  • Dynamics Days, 2018, Ignite Talk and Poster,
    The self-similar solution of diverging slip rate on faults with heterogeneous friction.
  • Gordon Research Conference on Rock Deformation, 2016,
    Preferential locations of slip-rate instabilities on faults determined by heterogeneous frictional properties.
  • Winter School, Cargese, Corsica, 2014, Oral,
    Slip rate instability under heterogeneous fault friction.
  • Southern California Earthquake Center, 2014 and 2015,
    Preferential earthquake-nucleating locations on faults determined by heterogeneous direct-and evolution-effect parameters of rate-and state-dependent friction.
  • American Geophysical Union, 2014 (and 2016) Oral (and Poster),
    The evolution of earthquake-nucleating slip instabilities under spatially variable steady-state rate dependence of friction.