Skip to Main content Skip to Navigation
Journal articles

Tomography of the Alpine region from observations of seismic ambient noise

Abstract : We use correlations of the ambient seismic noise to study the crust in western Europe. Cross correlation of 1 year of noise recorded at 150 three components broadband stations yields more than 3 000 Rayleigh wave group velocity measurements. These measurements are used to construct Rayleigh group velocity maps of the Alpine region and surrounding area in the 5–80 s period band. In the 5–10 s period band, the seismic noise recorded in Europe is dominated by surface waves originating from the Northern Atlantic ocean. This anisotropy of the noise and the uneven station distribution affect the azimuthal distribution of the paths where we obtain reliable group velocity measurements. As a consequence our group velocity models have better resolution in the northeast direction than in the southwest direction. Finally we invert the resulting Rayleigh wave group velocity maps to determine the Moho depth. Our results are in good agreement with the result of the numerous active experiments in the Alps and provide a continuous image of the Alpine structure.
Document type :
Journal articles
Complete list of metadata

Cited literature [44 references]  Display  Hide  Download
Contributor : Pascale Talour Connect in order to contact the contributor
Submitted on : Thursday, August 6, 2020 - 3:34:15 PM
Last modification on : Tuesday, November 16, 2021 - 4:45:26 AM
Long-term archiving on: : Monday, November 30, 2020 - 3:54:35 PM


Publisher files allowed on an open archive



L. Stehly, B. Fry, Michel Campillo, N.M. Shapiro, J. Guilbert, et al.. Tomography of the Alpine region from observations of seismic ambient noise. Geophysical Journal International, Oxford University Press (OUP), 2009, 178 (1), pp.338-350. ⟨10.1111/j.1365-246X.2009.04132.x⟩. ⟨insu-00447974⟩



Record views


Files downloads