Wide-angle deep seismic reflection profile (IBERSEIS Wide-Angle Transect)

Palomeras, Imma; Simancas, José Fernando; Ayarza, P.; González Lodeiro, Francisco; Pérez-Estaún, Andrés; Azor, Antonio; Carbonell, Ramón

Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/193986

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Título:	Wide-angle deep seismic reflection profile (IBERSEIS Wide-Angle Transect)
Autor:	Palomeras, Imma; Simancas, José Fernando; Ayarza, P.; González Lodeiro, Francisco; Pérez-Estaún, Andrés CSIC; Azor, Antonio CSIC ORCID; Carbonell, Ramón CSIC ORCID
Palabras clave:	Field Seismic:Active:MCS DigitalSeg SEGY Seismic:Reflection SeismicSource_Explosive
Fecha de publicación:	5-nov-2019
Editor:	DIGITAL.CSIC
Citación:	Palomeras, I., Simancas, J. F., Ayarza, P., González Lodeiro, F., Pérez-Estaún, A., Azor, A., and Carbonell, R.; 2003; "Wide-angle deep seismic reflection profile (IBERSEIS Wide-Angle Transect) [Dataset]"; DIGITAL.CSIC; http://dx.doi.org/10.20350/digitalCSIC/9018
Resumen:	The IBERSEIS wide-angle seismic reflection dataset consists of two NE-SW oriented transects acquired in the SW of the Iberian Massif. They crossed three major geological zones (South Portuguese Zone, Ossa-Morena Zone, and Central Iberian Zone), with their tectonic contacts and the Pyrite Belt being of greatest interest. The velocity models obtained by forward modeling show a complex crust, especially in the middle crust. The velocity models are the most detailed ones that have been produced in the area and contain a large amount of new features that are relevant to the understanding of the composition of the crust and upper mantle beneath the zone.
Descripción:	The wide-angle seismic reflection data set consists of two transects. Transect A coincides with the trace of the IBERSEIS deep seismic reflection profile and transect B is located farther to the SE. The explosive charge was located in a single 20 cm diameter, 50–60-m deep shothole. Explosive shots with charge sizes of 1000, 750 and 500 kg, where distributed along the transect, with the largest charges located at the edges of the profile. 650 digital seismic recorders (590 Texans and 60 3-component Refteks) from IRIS (Incorporated Research Institutions for Seismology) instrument pool where used. These instruments where placed along the 300-km transect A at a 400-m station spacing. For transect B, a denser trace spacing was used. To achieve this, shots were fired twice. The stations were firstly placed at 300–400 m spacing along transect B. Once the shots were fired, the stations were moved 150–200 m toward the north along the profile. All shots were then fired a second time, resulting in shot records with a 150–200 m trace spacing.
URI:	http://hdl.handle.net/10261/193986
DOI:	10.20350/digitalCSIC/9018
Referencias:	Ehsan, S. A. (2014). Seismic characterization of the Central Iberian Zone from the surface to the upper mantle. PhD Thesis Carbonell, R., Levander, A., and Kind, R. (2013). TheMohorovičić discontinuity beneath the continental crust: An overview of seismic constraints. Tectonophysics 609, 353-376. Brown, D., Zhang, X., Palomera, I., Simancas, F., Carbonell, R., Juhlin, C., and Salisbury, M. (2012). Petrophysical analysis of a mid-crustal reflector in the IBERSEIS profile, SW Spain. Tectonophysics, vol. 550-553, pp. 35-46. Martínez Poyatos, D., Carbonell, R., Palomeras, I., Simancas, J. F., Ayarza, P., Martí, D., Azor, A., Jabaloy, A., González Cuadra, P., Tejero, R., Martín Parra, L.M., Matas, J., González Lodeiro, F., Pérez-Estaún, A., García Lobón, J. L., and Mansilla, L. (2012). Imaging the curstal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect. Tectonics, vol. 31, TC3017. Palomeras, I., Carbonell, R., Ayarza, P., Fernàndez, M., Simancas, J.F., Martínez Poyatos, D., González Lodeiro, F., and Pérez-Estaún, A. (2011). Geophysical model of the lithosphere across the Variscan Belt of SW-Iberia: Multidisciplinary assessment. Tectonophysics 508, 42-51. Ayarza, P., Palomeras, I., Carbonell, R., Afonso, J.C., and Simancas, F. (2010). Physics of the Earth and Planetary Interiors 181, 88-102. Palomeras, I., Carbonell, R., Flecha, I., Simancas, F., Ayarza, P., Matas, J., González-Lodeiro, F., and Pérez-Estaún, A. (2009). Nature of the lithosphere across the Variscan orogen of SW Ineria: Dense wide-angle reflection data. Journal of Geophysical Research, vol. 114, B02302, doi:10.1029/2007JB005050 Flecha, I., Palomeras, I., Carbonell, R., Simancas, F., Ayarza, P., Matas, J., González-Lodeiro, F., and Pérez-Estaún, A. (2009). Seismic imaging and modelling of the lithosphere of SW-Iberia. Tectonophysics 472, 148-157. Ayarza, P., Palomeras, I., Simancas. F., Carbonell, R., Martínez-Poyatos, D., Azor, A., Pérez-Estaún, A., and González-Lodeiro, F. (2008). An upper mantle reflector beneath SW Iberia. Location and seismic constraints. The 33rd International Geological Congress, Oslo, Norway, August 2008. Palomeras, I., Fernández, M., Carbonell, R., Simancas. F., Ayarza, P., Martínez-Poyatos, D., Azor, A., González-Lodeiro, F., and Pérez-Estaún, A. (2008). A large seismic transect across the variscan belt of SW-Iberia: A multidisciplinary view. The 33rd International Geological Congress, Oslo, Norway, August 2008.
Aparece en las colecciones:	(Geo3Bcn) SeisDARE

Ficheros en este ítem:

Fichero	Descripción	Tamaño	Formato
Descripcion_ficheros_IBERSEIS WA_dataset.xlsx	List of the files included in this dataset	9,37 kB	Microsoft Excel XML	Visualizar/Abrir
Readme_IBERSEIS WA.txt	Dataset general information	2,1 kB	Text	Visualizar/Abrir
Index card_IBERSEIS WA.pdf	Index card summarizing the main characteristics of the dataset	725,66 kB	Adobe PDF	Visualizar/Abrir
IBERSEIS-WA.sgy	Raw seismic data	1,2 GB	SEGY	Visualizar/Abrir
IBERSEIS-WA-Geo.asc	Geometry acquisition of transect A (perfil A, from 1001 to 1686) and transect B (composed of perfil B and C, from 2001 to 3682).	52,64 kB	Text	Visualizar/Abrir