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2021 |
Teleseismic measurements of upper mantle shear wave anisotropy in the Isthmus of Tehuantepec, Mexico Shear wave splitting measurements in the Isthmus of Tehuantepec (IT), southern Mexico, inferred from teleseismic core phases are presented. Measurements were made along a south-to-north profile across the IT. The results show a predominantly trench-normal pattern of fast polarization orientations with averaged delay times up to 2.2 s. Fast orientations near the trench suggest a corner flow in the mantle wedge and an entrained flow in the subslab region. Away the trench, fast orientations are parallel to the Absolute Plate M ... León Soto, Gerardo; Valenzuela, Raúl; Arceo, R; Huesca-Pérez, Eduardo; Rosas, Ricardo; Published by: Geophysical Journal International Published on: dec YEAR: 2021   DOI: 10.1093/gji/ggab301 |
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