Deep Earth rotational seismology - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Geophysical Journal International Année : 2023

Deep Earth rotational seismology

Résumé

Rotational seismology opens a new avenue to study the deep interior of the Earth. Using data from the Wettzell Observatorium, Germany, where a ring laser gyroscope and a 3-component translational broadband seismometer are co-located, we report the presence of clear S, ScS and SdS signals on both rotational and translational seismograms. Using S wave arrivals, we propose a new methodology to extract information on velocity changes in the Earth mantle and we show that, by combining both translational and rotational data, we are able to solve the well known velocity-depth ambiguity inherent to classical inverse problems. The methodology is validated using ray theory and 2.5D finite-difference synthetics. We provide a proof-of-concept showing that future studies of the Earth's deep interior can be improved by combining translational and rotational records.
Fichier principal
Vignette du fichier
ggad245.pdf (1.59 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

insu-04155700 , version 1 (07-07-2023)

Identifiants

Citer

Rafael Abreu, Stephanie Durand, Sebastian Rost, Christine Thomas. Deep Earth rotational seismology. Geophysical Journal International, 2023, ⟨10.1093/gji/ggad245⟩. ⟨insu-04155700⟩
7 Consultations
24 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More