@article{PAR00012303,
  title = {{S}eismic response and anisotropy of a model hcp iron inner core},
  author = {{L}incot, {A}. and {D}eguen, {R}. and {M}erkel, {S}. and {C}ardin, {P}hilippe},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e present a framework for simulating the measurement of seismic anisotropy in a model inner core by computing travel time residuals of synthetic seismic rays propagated through the model. {T}he method is first tested on simple inner core structural models consisting of layers with distinct anisotropy, as often proposed in the literature. {T}hose models are not consistent with geodynamics. {H}ence, we extend the method to a numerically grown inner core composed of epsilon-{F}e with flow generated from an excess of crystallization in the equatorial belt, inducing polycrystalline textures. {T}he global inner core anisotropy is seven times smaller than that of the single-crystal. {C}ompositional stratification amplifies the global anisotropy by 15% while the addition of solidification textures reduces it by a factor of two. {A}s such, and within the tested geodynamical models, no published elastic model of epsilon-{F}e at inner core conditions allows one to reproduce the 3% cylindrical anisotropy reported in seismology publications. {I}n addition, our models demonstrate that additional information, such as the depth dependence and the spread of the observed anisotropy is a key for revealing the dynamics and history of the inner core.},
  keywords = {{I}nner core ; {A}nisotropy ; {I}ron ; {T}exture ; {G}eodynamical model ; {S}eismic wave},
  booktitle = {},
  journal = {{C}omptes {R}endus {G}eoscience},
  volume = {346},
  numero = {5-6},
  pages = {148--157},
  ISSN = {1631-0713},
  year = {2014},
  DOI = {10.1016/j.crte.2014.04.001},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00012303},
}