Academic Profile

Academic Profile

Asst Prof Wei Shengji

Assistant Professor, Asian School of the Environment

Email: shjwei@ntu.edu.sg
Asst Prof Wei Shengji

Biography
At the University of Science and Technology of China (USTC), I obtained my geophysical Bachelor (2004) and Ph.D degrees (2009) in the department of Earth and Space Sciences. During my Ph.D study, I visited SeismoLab of Caltech from 2008 to 2009, working with Prof. Don Helmberger on recognizing wiggles on the seismogram. This was followed by my postdoctoral time at SeismoLab in 2009 until 2014. My research interests are mainly focused on earthquake source studies both in real time and later in-depth research. Recently, I have also become interested in slab structures and their impact on source studies. Besides working on waveform modeling, I am also working with Prof Avouac and other colleagues at Caltech and JPL (e.g. Eric Fielding) to include results from optical and SAR imaging of ground deformation. Collaborations with USGS researchers Robert Graves and Kenneth Hudnut are also part of my research related to seismic hazards. My research experiences cover both natural and man-made earthquakes. My approach for resolving the kinematic nature of earthquakes involves the combination of geodesy, geology and seismology to better constrain the spatial-temporal evolution of seismic rupture properties. Besides reconciling various datasets, I have developed techniques that allow waveform inversions to be extended to the higher frequency (>1Hz) range of relevance for damage assessment. Path calibrations also allow us to report earthquake source parameters more accurately in real time, and warnings can be issued based on these information.
Research Interests
1, real time seismology
2, earthquake focal mechanism inversion
3, kinematic finite fault inversion, involving joint constraints from geodetic, seismological, tsunami and field observations
4, strong ground motion simulation with 3-dimensional velocity structure and their potential application to earthquake engineering
5, crustal to upper mantle scale velocity structure study, aim to establish path calibrations for earthquake studies and image slab structure in the subduction zones
Current Projects
  • Deep Learning of Earthquake Moment Tensors
  • Earthquake physics: Dynamics of the lithosphere-asthenosphere system
  • In-Depth Laboratory Investigation of the Slip Failure Modes Near Critical Stability
  • Indonesia seismology
  • Integrated studies of the strength of Earth's lithosphere
  • Myanmar Seismology
  • New Constraints on Fault Geometry and Rupture Propagation of Mega-earthquakes
  • Nodal Array
  • Rupture Imaging
  • SE Asia Seismology
  • Short Period Array
  • Sumatra Seismic
  • Tsunami EQ
Selected Publications
  • Qian, Y., Wei, S., Wu, W., Zeng, H., Coudurier Curveur, A., & Ni S. (2019). Teleseismic waveform complexities caused by near trench structures and their impacts on earthquake source study: application to the 2015 Illapel aftershocks (Central Chile). Journal of Geophysical Research-Solid Earth, 124(1), 870-889.
  • Xin Wang, Shengji Wei, Yu Wang, Phyo Maung Maung, Judith Hubbard, Paramesh Banerjee, Bor‐Shouh Huang, Kyaw Moe Oo, Thomas Bodin, Anna Foster, Rafael Almeida. (2018). A 3‐D Shear Wave Velocity Model for Myanmar Region. Journal of Geophysical Research-Solid Earth, .
  • Wei, Shengji; Feng, Guangcai; Zeng, Hyongyu; Martin, Stacey Servito; Shi, Qibin; Muzli Muzli; Wang, Teng; Lindsay, Eric; Triyono, Rahmat; Hubbard, Judith; Tapponnier, Paul; Sieh, Kerry. (2018, December). The 2018 Mw 7.5 Palu earthquake, a gradually accelerating super-shear rupture stopped by stress shadows in a complex fault system. Paper presented at American Geophysical Union (AGU), Washington, D.C.
  • Xin Wang, Kyle Edward Bradley, Shengji Wei, Wenbo Wu. (2018). Active backstop faults in the Mentawai region of Sumatra, Indonesia, revealed by teleseismic broadband waveform modeling. Earth and Planetary Science Letters , 483, 29-38.
  • Wei, S., M. Chen, X. Wang, R. Graves, E. O. Lindsey, T. Wang, C. Karakas, D. Helmberger. (2018). The 2015 Gorkha (Nepal) Earthquake sequence: I. Source modeling and deterministic 3D ground shaking. Tectonophysics, 722, 447-461.

« Back to Category Write-up

​​​​​​​​