Jayalakshmi Sivasubramonian

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Research Interests

​My research attempts to study the engineering problem of estimating seismic hazard, by using geophysical models. Currently, earthquake engineers use data from the catalogue of past events to determine future hazard. However, this method when deployed to determine site specific hazard, poses serious limitations due to lack of data. For this reason, it is also not possible to capture extreme events with large return periods that needs to be properly encountered in hazard assessment. Inspired by geophysical models, I have developed new mechanistic approach using finite element method to estimate seismic activity and hazard parameters.

A related area of interest to earthquake engineers is the estimation of ground motion parameters for establishing seismic hazard curves. The existing empirical attenuation relations suffer serious limitations posed by lack of strong motion data at site level. Hence these relations do not completely capture complexities of earthquake source, medium and topography. To address this problem, I have furthered my research to develop three dimensional mechanistic models including the physical simulations of rupture to estimate site specific ground motions.

Selected Publications

  • ​Jayalakshmi, S., Dhanya, J., Raghukanth, S.T.G., and Mai, P.M. (2021). Hybrid broadband ground motion simulations in the Indo-Gangetic basin for great Himalayan earthquake scenarios, Bulletin of Earthquake Engineering, doi.org/10.1007
  • ​Jayalakshmi, S., Dhanya, J., Raghukanth, S.T.G., and Mai, P.M. (2020). 3D Seismic Wave Amplification in the Indo-Gangetic Basin from Spectral Element Simulations, Soil Dynamics and Earthquake Engineering, 129, 105923, doi.org/10.1016
  • Jayalakshmi, S., Raghukanth, S,T.G. and Rao,B.N. (2017). An XFEM model for Seismic Activity in Indian plate, Journal of Earthquake Engineering, 22 (5), 942-969, doi.org/10.1080
  • Jayalakshmi, S.,  & Raghukanth, S. T. G. (2017). Finite element models to represent seismic activity of the Indian plate. Geoscience Frontiers, 8(1), 81-91.
  • Jayalakshmi, S.,  & Raghukanth, S. T. G. (2016). Intra plate stresses in India using finite element modelling. Acta Geophysica, 64(5), 1370-1390.
  • Jayalakshmi, S., & Raghukanth, S. T. G. (2016). Regional Ground Motion Simulation around Delhi due to future large earthquake. Natural Hazards, 82(3), 1479-1513
  • Jayalakshmi, S., & Raghukanth, S. T. G. (2015). An Engineering Model for Seismicity of India. Geomatics,Natural Hazards and Risk, 6(1), 1-20

Education

  • ​2014 Doctor of Philosophy (Ph.D), Engineering Seismology
    Indian Institute of Technology Madras (IIT Madras), Chennai, India 
    Department of Civil (Structural) Engineering
  • 2009 Master of Technology (M.Tech), Civil (Structural) Engineering
    Indian Institute of Technology Madras (IIT Madras), Chennai, India 
  • 2007 Bachelor of Technology (B.Tech), Civil Engineering
    University of Kerala, College of Engineering Trivandrum (CET), India

Professional Profile

  • 2017 – 2022: Postdoctoral Research Fellow, Computational Earthquake Seismology, KAUST, Saudi Arabia
  • 2015 – 2017: Assistant Professor, Dept. of Civil Engineering, Mahindra Ecole Centrale (MEC) Hyderabad, India
  • 2014 – 2015: Assistant Professor, Dept. of Civil Engineering, Chaitanya Bharathi Institute of Technology (CBIT), Hyberabad, India