Mantle structure under Gibraltar constrained by dispersion of body waves
Article first published online: 17 NOV 2007
Copyright 2007 by the American Geophysical Union.
Geophysical Research Letters
Volume 34, Issue 22, November 2007
How to Cite
2007), Mantle structure under Gibraltar constrained by dispersion of body waves, Geophys. Res. Lett., 34, L22305, doi:10.1029/2007GL030964., and (
- Issue published online: 17 NOV 2007
- Article first published online: 17 NOV 2007
- Manuscript Accepted: 15 OCT 2007
- Manuscript Revised: 1 OCT 2007
- Manuscript Received: 11 JUN 2007
 We study the Africa-Iberia plate boundary in the vicinity of Gibraltar. Numerous models have been proposed for that region throughout the last decades, proposing mechanisms that range widely from continental delamination, convective removal, to subduction of oceanic lithosphere. To better constrain upper-mantle structure under the region, we study waveforms of P-waves that traverse the Alboran Sea region between Spain and Morocco. These show dispersive behavior, which, together with early arrival times, confirms the presence of an anomalous upper mantle structure under the Alboran Sea. The dispersion is consistent with that expected from subducted lithosphere. Waveforms of body waves therefore provide a way to better constrain the elusive mantle structure and dynamics of the Alboran Sea region.