Antipodal focusing of seismic waves due to large meteorite impacts on Earth

@article{Meschede2011AntipodalFO,
  title={Antipodal focusing of seismic waves due to large meteorite impacts on Earth},
  author={Matthias Meschede and Conor L. Myhrvold and Jeroen Tromp},
  journal={Geophysical Journal International},
  year={2011},
  volume={187},
  pages={529-537}
}
SUMMARY We examine focusing of seismic waves at the antipode of large terrestrial meteorite impacts, using the Chicxulub impact as our case study. Numerical simulations are based on a spectral-element method, representing the impact as a Gaussian force in time and space. Simulating the impact as a point source at the surface of a spherically symmetric earth model results in deceptively large peak displacements at the antipode. Earth’s ellipticity, lateral heterogeneity and a spatially… 

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