TY - JOUR
T1 - Ambient noise surface wave tomography of the Iberian Peninsula
T2 - Implications for shallow seismic structure
AU - Villaseñor, Antonio
AU - Yang, Yingjie
AU - Ritzwoller, Michael H.
AU - Gallart, Josep
N1 - Copyright 2007 by the American Geophysical Union. Originally published in Geophysical research letters, Vol. 34, L11304. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
PY - 2007/6/16
Y1 - 2007/6/16
N2 - We have obtained high resolution group velocity maps of Rayleigh waves at periods from 8 to 25 seconds across the Iberian Peninsula by cross-correlating four months of ambient noise data recorded by 40 permanent broadband stations. Group velocity maps accurately image the main structural elements of the Iberian upper crust, including the Iberian Massif, Alpine orogens and major sedimentary basins. The Pyrenees and the Iberian Chain are imaged as relatively high group velocities, in contrast with the Betic Cordillera, which is characterized by low velocities. We explain these low velocities in the Betics by the presence of widespread intramontane basins created in an extensional episode simultaneous with north-south convergence between the African and Eurasian plates. The most prominent low velocity anomalies in the Iberian Peninsula are related to the Guadalquivir Basin, the flysch units of the Campo de Gibraltar, and the sediments of the Gulf of Cadiz.
AB - We have obtained high resolution group velocity maps of Rayleigh waves at periods from 8 to 25 seconds across the Iberian Peninsula by cross-correlating four months of ambient noise data recorded by 40 permanent broadband stations. Group velocity maps accurately image the main structural elements of the Iberian upper crust, including the Iberian Massif, Alpine orogens and major sedimentary basins. The Pyrenees and the Iberian Chain are imaged as relatively high group velocities, in contrast with the Betic Cordillera, which is characterized by low velocities. We explain these low velocities in the Betics by the presence of widespread intramontane basins created in an extensional episode simultaneous with north-south convergence between the African and Eurasian plates. The most prominent low velocity anomalies in the Iberian Peninsula are related to the Guadalquivir Basin, the flysch units of the Campo de Gibraltar, and the sediments of the Gulf of Cadiz.
UR - http://www.scopus.com/inward/record.url?scp=34548040719&partnerID=8YFLogxK
U2 - 10.1029/2007GL030164
DO - 10.1029/2007GL030164
M3 - Article
AN - SCOPUS:34548040719
SN - 0094-8276
VL - 34
SP - 1
EP - 5
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 11
M1 - L11304
ER -