Bianchi I, Miller MS, Bokelmann G. Insights on the upper mantle beneath the Eastern Alps.
EARTH AND PLANETARY SCIENCE LETTERS 2014;
403:199-209. [PMID:
25843967 PMCID:
PMC4375711 DOI:
10.1016/j.epsl.2014.06.051]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 06/29/2014] [Accepted: 06/30/2014] [Indexed: 06/04/2023]
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.
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