Anisotropy in the continental upper mantle: possible evidence from explosion seismology |
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| Authors: | Alfred Hirn |
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| Institution: | Laboratoire d'Etude Géophysique des Structures Profondes -L.A. 195, Institut de Physique du Globe, UniversitéPierre et Marie Curie, 4 place Jussieu, Tour 14, 75230 Paris Cedex 05 |
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| Abstract: | Summary. Peculiarities of propagation in the upper mantle of western Europe are documented by profiles of stations recording body waves generated by explosions. Azimuthal variations of travel times and amplitudes of P waves and possible birefringence of S waves may be associated with an anisotropic layer at depths where the lithosphere-asthenosphere transition is supposed to be. |
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