@article{fdi:010076707,
  title = {{N}ormal mode simulation of prompt elastogravity signals induced by an earthquake rupture},
  author = {{J}uhel, {K}. and {M}ontagner, {J}. {P}. and {V}all{\'e}e, {M}. and {A}mpuero, {J}ean-{P}aul and {B}arsuglia, {M}. and {B}ernard, {P}. and {C}l{\'e}v{\'e}d{\'e}, {E}. and {H}arms, {J}. and {W}hiting, {B}. {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}s soon as an earthquake starts, the rupture and the propagation of seismic waves redistribute masses within the {E}arth. {T}his mass redistribution generates in turn a long-range perturbation of the {E}arth gravitational field, which can be recorded before the arrival of the direct seismic waves. {T}he recent first observations of such early signals motivate the use of the normal mode theory to model the elastogravity perturbations recorded by a ground-coupled seismometer or gravimeter. {C}omplete modelling by normal mode summation is challenging due to the very large difference in amplitude between the prompt elastogravity signals and the direct {P}-wave signal. {W}e overcome this problem by introducing a two-step simulation approach. {T}he normal mode approach enables a fast computation of elastogravity signals in layered self-gravitating {E}arth models. {T}he fast and accurate computation of gravity perturbations indicates instrument locations where signal detection may be achieved, and may prove useful in the implementation of a gravity-based earthquake early warning system.},
  keywords = {{JAPON} ; {TOHOKU} {OKI}},
  booktitle = {},
  journal = {{G}eophysical {J}ournal {I}nternational},
  volume = {216},
  numero = {2},
  pages = {935--947},
  ISSN = {0956-540{X}},
  year = {2019},
  DOI = {10.1093/gji/ggy436},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076707},
}