HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

The seismological picture of the inner core: structure and rotation

Abstract : This paper presents a review of recent results concerning the structure and the rotation of the inner core, as inferred from seismological observations. We first focus on the apparent hemispherical pattern of the inner core structure, observed in both the anisotropy and the heterogeneity of the uppermost layers, whereas isotropic velocities seem to be homogeneous in a broad wavelength domain. Then we present results on the radial variations of the attenuation and its possible anisotropy, for which viscoelasticity and wave scattering provide complementary explanations. Linked to these results is a discussion about the detection of the PKJKP phase, which propagates as S-wave inside the inner core. Finally, the seismological observations of a possible inner core rotation are discussed; recent results seem to favour rotation rates below 0.2° yr -1.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03607117
Contributor : Nathalie Pothier Connect in order to contact the contributor
Submitted on : Saturday, March 12, 2022 - 5:51:42 PM
Last modification on : Monday, May 16, 2022 - 8:20:19 AM

Links full text

Identifiers

Collections

Citation

Annie Souriau, Raphaël Garcia, Georges Poupinet. The seismological picture of the inner core: structure and rotation. Comptes Rendus Géoscience, Elsevier, 2003, 335, pp.51-63. ⟨10.1016/S1631-0713(03)00010-5⟩. ⟨insu-03607117⟩

Share

Metrics

Record views

6