Publication Date:
2020-02-12
Description:
We obtain well-resolved 1-D models of the shear wave velocity vs under the Eifel region, Central Europe, from teleseismic surface waves. Using 41 temporary and permanent broad-band stations and 30 events we determine regional and local dispersion curves from Rayleigh and Love waves. The inverted regional vs models show the asthenosphere at about 70 km depth. A subset of 35 stations, which are located close to the Quaternary Eifel volcanic fields, provide data with high resolution for a local Eifel vs model. Both, Rayleigh and Love wave models indicate an upper boundary of a low-velocity zone (LVZ) at just 45–50 km depth. The maximum vs perturbation is about −3 per cent. We interpret this shallow LVZ as the top of the Eifel plume. Receiver functions reveal a similar depth for this seismic discontinuity, but body wave tomography could not clearly resolve the top of the Eifel plume due to smearing along subvertical ray paths. Thus our results provide an important piece of information about the small Eifel upper mantle plume.
Language:
English
Type:
info:eu-repo/semantics/article
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