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Upper mantle structure of the South American continent and neighboring oceans from surface wave tomography

Heintz, M.; Debayle, E; Vauchez, Alain


We present a new three-dimensional SV-wave velocity model for the upper mantle beneath South America and the surrounding oceans, built from the waveform inversion of 5850 Rayleigh wave seismograms. The dense path coverage and the use of higher modes to supplement the fundamental mode of surface waves allow us to constrain seismic heterogeneities with horizontal wavelengths of a few hundred kilometres in the uppermost 400 km of the mantle. The large scale features of our tomographic model...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Tectonophysics
DOI: 10.1016/j.tecto.2005.05.006


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