EGU logo

European Geosciences Union

Jagdish Chandra Vyas

Jagdish Chandra Vyas
Jagdish Chandra Vyas

SM Seismology

The 2016 Outstanding Student Poster and PICO (OSPP) Award is awarded to Jagdish Chandra Vyas for the poster/PICO entitled:

Distance and azimuthal dependence of ground-motion variability (Chandra Vyas, J.; Mai, P.M.; Galis, M.)

Click here to download the poster/PICO file.

I am a PhD student at King Abdullah University of Science and Technology (KAUST). My research seeks to better understand effects of earthquake rupture propagation on ground-motion and its variability through numerical modeling. Particularly, I analyze influence of directivity effect, super-shear ruptures and medium scattering due to random heterogeneities present in the earth structure on ground-shaking. In the EGU 2016 poster, we analyzed distance and azimuthal dependence of the intra-event groundmotion variability for large-scale simulations of the 1992 Landers earthquake and scenario earthquake in Southern California. We found that ground-motion variability is higher in the near-field than what is a usually assumed in seismic hazard analysis and decreases as power law with increasing distance from the fault.