EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Catalog of 3C rotations measured at the LSBB’s antenna.

Roxanne Rusch1, Olivier Sebe1, Jean-Baptiste Décitre3, and Stéphane Gaffet2,3
Roxanne Rusch et al.
  • 1CEA, Paris, France (
  • 2Univ. Nice Sophia Antipolis, CNRS, IRD, Observatoire de la côte d’Azur, Géoazur UMR 7329, Valbonne, France
  • 3LSBB UMS 3538, Rustrel, France

Rotational seismology refers to the study of the 3 components of rotation that are part of the
seismic wave field equation (Aki and Richards, 2002). Using the Geodetic Method (GM)
[Spudich et al, 1995], that is, using spatial finite differences of the local ground motions, the
3C of rotations were calculated at the dense broadband seismic array of the LSBB (Low
background noise underground research Laboratory, France, A catalog of 3C
rotations was created by systematically applying this method to several seismic events. The
uncertainty of the rotation measurements has been estimated through a sensitivity analysis.
This catalog will be presented and illustrated using examples. The analysis of the rotational
motions relatively to the seismic events source’s properties will be discussed as well.

How to cite: Rusch, R., Sebe, O., Décitre, J.-B., and Gaffet, S.: Catalog of 3C rotations measured at the LSBB’s antenna., EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-6767,, 2020