Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone

Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone

European Geosciences Union General Assembly (EGU23), 24-28 April 2023, Vienna, Austria.-- 1 page

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Main Authors: Neri, Alejandra, Badrane, Said, Gaite, Beatriz, Villaseñor, Antonio, Cabieces, Roberto, Ranero, César R., Ugalde, Arantza
Format: comunicación de congreso biblioteca
Published: European Geosciences Union 2023-04-27
Online Access:http://hdl.handle.net/10261/362686
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spelling dig-icm-es-10261-3626862024-07-04T08:34:54Z Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone Neri, Alejandra Badrane, Said Gaite, Beatriz Villaseñor, Antonio Cabieces, Roberto Ranero, César R. Ugalde, Arantza European Geosciences Union General Assembly (EGU23), 24-28 April 2023, Vienna, Austria.-- 1 page With more than 40 years of study, there are still uncertainties about the structure, evolution, and geodynamics of the North African and South Iberian Peninsula lithospheric structure and collision zone. Models of the lithosphere of the region coincide in some anomaly zones, such as the subduction slab under the Gibraltar arc. However, they show discrepancies in the distribution and polarity of the velocity anomalies in the onshore and offshore of most of North Africa. To contribute to the study of the lithospheric structure and to unveil the tectonics in this controversial region, we constructed an ambient noise tomography (ANT) of Love and Rayleigh waves from temporary and permanent broadband stations located in the Iberian Peninsula, North Africa, and Atlantic islands (Madeira, Canarias, Balearic Islands). The methodology employed contemplates phase cross-correlation of 14 months of ambient noise records and the subsequent stacking of the cross-correlograms to obtain the Empirical Green's Function (EGF). To measure the dispersion characteristics of surface wave EGFs present in the ambient noise, we implemented the Frequency-Time Analysis (FTAN). And finally, the inversion of the dispersion measures to get the surface wave tomography. The distribution of the almost 100 broadband stations in North Africa, Portugal, Spain, and the Atlantic islands, results in a broad path coverage in the North African and South Iberian Peninsula lithospheric structure and collision zone, complementing the previous Rayleigh wave velocity models. Furthermore, current studies in this region are Rayleigh-waves based, so the integration of Love waves in this ANT yields new information on the media velocity anisotropy 2024-07-04T08:30:03Z 2024-07-04T08:30:03Z 2023-04-27 2024-07-04T08:30:03Z comunicación de congreso European Geosciences Union General Assembly: EGU23-15781 (2023) http://hdl.handle.net/10261/362686 10.5194/egusphere-egu23-15781 Publisher's version https://doi.org/10.5194/egusphere-egu23-15781 Sí open European Geosciences Union
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
description European Geosciences Union General Assembly (EGU23), 24-28 April 2023, Vienna, Austria.-- 1 page
format comunicación de congreso
author Neri, Alejandra
Badrane, Said
Gaite, Beatriz
Villaseñor, Antonio
Cabieces, Roberto
Ranero, César R.
Ugalde, Arantza
spellingShingle Neri, Alejandra
Badrane, Said
Gaite, Beatriz
Villaseñor, Antonio
Cabieces, Roberto
Ranero, César R.
Ugalde, Arantza
Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone
author_facet Neri, Alejandra
Badrane, Said
Gaite, Beatriz
Villaseñor, Antonio
Cabieces, Roberto
Ranero, César R.
Ugalde, Arantza
author_sort Neri, Alejandra
title Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone
title_short Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone
title_full Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone
title_fullStr Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone
title_full_unstemmed Rayleigh and Love wave tomography from seismic noise of the North African and South Iberian Peninsula lithospheric structure and collision zone
title_sort rayleigh and love wave tomography from seismic noise of the north african and south iberian peninsula lithospheric structure and collision zone
publisher European Geosciences Union
publishDate 2023-04-27
url http://hdl.handle.net/10261/362686
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