Mapping the mantle transition zone discontinuities across South-Central Europe using body waves from seismic noise correlations
- Autor(en)
- Yang Lu, Stefan M. Schmid, Qing-Yu Wang, Götz Bokelmann
- Abstrakt
We map the mantle transition zone (MTZ) discontinuities beneath South-Central Europe using P-wave reflection phases recovered from noise correlations. We analyze up to four years of seismic noise recordings from 900 broadband stations in the study area. By stacking noise correlations in selected summer months, we significantly improved the retrieval of typically low-amplitude body-wave reflection phases in the light of a quiet surface-wave environment and sufficient noise body-wave illumination from deep paths. We obtain reliable P-wave reflections associated with the 410 km and 660 km discontinuities in the period band of 4–10 s. These short-period reflections reveal clear lateral depth variations of the two discontinuities, indicating complex MTZ structure under the greater Alpine region. This provides new important constraints on present and past mantle dynamics, and it shows the strong potential of passive seismic imaging for studying deep-Earth discontinuities.
- Organisation(en)
- Institut für Meteorologie und Geophysik
- Externe Organisation(en)
- Eidgenössische Technische Hochschule Zürich, Massachusetts Institute of Technology
- Journal
- Earth and Planetary Science Letters
- Band
- 624
- ISSN
- 0012-821X
- DOI
- https://doi.org/10.1016/j.epsl.2023.118457
- Publikationsdatum
- 12-2023
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105122 Seismik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Geochemistry and Petrology, Geophysics, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous)
- Link zum Portal
- https://ucris.univie.ac.at/portal/de/publications/mapping-the-mantle-transition-zone-discontinuities-across-southcentral-europe-using-body-waves-from-seismic-noise-correlations(f99e3909-5cff-4688-9f1e-c376096d72b4).html