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Insights on the upper mantle beneath the Eastern Alps.

ABSTRACT: Analyses of Ps and Sp receiver functions from datasets collected by permanent and temporary seismic stations, image a seismic discontinuity, due to a negative velocity contrast across the entire Eastern Alps. The receiver functions show the presence of the discontinuity within the upper mantle with a resolution of tens of kilometers laterally. It is deeper (100-130 km) below the central portion of the Eastern Alps, and shallower (70-80 km) towards the Pannonian Basin and in the Central Alps. Comparison with previous studies renders it likely that the observed discontinuity coincides with the lithosphere-asthenosphere boundary (LAB) east of 15°E longitude, while it could be associated with a low velocity zone west of 15°E.

SUBMITTER: Bianchi I

PROVIDER: S-EPMC4375711 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature

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Insights on the upper mantle beneath the Eastern Alps.

Bianchi Irene I Miller Meghan S MS Bokelmann Götz G

Earth and planetary science letters 20141001

Analyses of Ps and Sp receiver functions from datasets collected by permanent and temporary seismic stations, image a seismic discontinuity, due to a negative velocity contrast across the entire Eastern Alps. The receiver functions show the presence of the discontinuity within the upper mantle with a resolution of tens of kilometers laterally. It is deeper (100-130 km) below the central portion of the Eastern Alps, and shallower (70-80 km) towards the Pannonian Basin and in the Central Alps. Com ...[more]

PMID: 25843967

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