Abstract
P-wave travel time residuals for a network of stations in southeastern Europe were used in an inversion experiment for mapping upper mantle heterogeneities in the network region. For Level 1 (depth range 0–100 km), the estimated velocity anomalies correlated reasonably well with heat flow observations and other geophysical and tectonic features. Level 2 anomalies (depth range 100–300 km) imply that the Pannonian Basin has an asthenospheric root, while a velocity low over the northern Aegean Sea supports McKenzie’s (9) hypothesis of asthenospheric upwelling as part of his model for the extensional tectonics of the Aegean Sea. Also in the deeper part of the upper mantle (levels 3 & 4, depth ranges 300–500 km and 500–600 km) pronounced velocity anomalies are observed, although their interpretation in terms of specific thermal or compositional anomalies is not yet feasible.
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Hovland, J., Husebye, E.S. (1981). Three-Dimensional Seismic Velocity Image of the Upper Mantle Beneath Southeastern Europe. In: Husebye, E.S., Mykkeltveit, S. (eds) Identification of Seismic Sources — Earthquake or Underground Explosion. NATO Advanced Study Institutes Series, vol 74. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8531-5_31
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DOI: https://doi.org/10.1007/978-94-009-8531-5_31
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