The 8A Seismic Network, 2010–2012

Network code:8A Type:Temporary Identifier: doi:10.14470/3N7565750319
(Citation information)
Restricted:No Archived at:GFZ
Network KML file: Get KML for network DataCite metadata: HTML | JSON | XML | INSPIRE
Seismic metadata:fdsnws-station Time Range:2010–2012
Institution(s):Instituto Dom Luiz - Universidade de Lisboa (Portugal), Deutsches GeoForschungsZentrum GFZ
Creator(s):Dias, N.A.; Silveira, G.; Haberland, C.
Description*:WILAS-West Iberia Lithosphere and Astenosphere
Abstract:The lithosphere of Iberia has been formed through a number of processes of continental collision and extension. In Lower Paleozoic, the collision of three tectonics blocks produced the Variscan Orogeny, the main event of formation of the Iberian lithosphere. The subsequent Mesozoic rifting and breakup of the Pangea had a profound effect on the continental crust of the western border of Iberia. Since the Miocene, the southern interaction between Africa and Iberia is characterized by a diffuse convergent margin that originates a vast area of deformation. The impact of this complex tectonic in the structure of the Iberian Lithosphere remains an incognito, especially in its western part beneath Portugal. While the surface geology is considerably studied and documented, the crustal and lithospheric structures are not well constrained. The existing knowledge relating the observed surface geology and Lithospheric deep structures is sparse and sometimes incoherent. The seismic activity observed along West Iberia is intensely clustered on few areas, namely on north Alentejo, Estremadura and Regua-Verin fault systems. Some of the problems to address are: What is the relation between surface topography and the deep crustal/lithospheric structure? How was it influenced by the past tectonic events? Which was the deep driving factor behind the tectonic units observed at surface: Lithosphere-Astenosphere boundary structure or deeper mantle structure? How the upper mantle and the Lithosphere-Astenosphere transition zone accommodated the past subduction? Which is its role and influence of the several tectonic units, and their contacts, in the present tectonic regime and in the stress field observed today? Is the anomalous seismicity and associated crustal deformation rates, due to an inherited structure from past orogenies? The main goal of this work is a 3D detailed image of the “slice” of the Earth beneath Western Iberia, by complementing the permanent seismic networks operating in Portugal and Spain. The different scales involved require the usage of several passive seismological methods: Local-Earthquake Tomography for fine structure of seismogenic areas, ambient noise tomography for regional crustal structure, Receiver Functions for Lithospheric structure and Surface-wave tomography for large scale Listosphere-Astenosphere structure. Crustal and Mantle seismic anisotropy analysis, coupled with source analysis and correlation with current geodetic measurements will allow establishing a reference 3D anisotropy model of present and past processes. (GIPP-Grant-number: GIPP201006) Waveform data is available from the GEOFON data centre. License: “Creative Commons Attribution-ShareAlike 4.0 International License” (CC BY-SA).
* Description is taken from seismic metadata, and may not match the preferred title for citations.
Sponsor(s):Geophysical Instrument Pool Potsdam (GIPP)
Funder(s):FCT-Grant PTDC/CTE-GIX/097946/2008

For instructions on retrieving waveform data and metadata (including instrument responses) for this and other seismic networks, see here.

8A Network Station Map

[Re-center] Legend:  Open access;  restricted.

Extended Network Information for network 8A

Show/hide additional network information.
Creator(s):Dias, N.A.; Silveira, G.; Haberland, C.
Title:Data of the temporary seismic WILAS network
Publisher:GFZ Data Services
Network DOI:doi:10.14470/3N7565750319
Citation example:Dias, N.A.; Silveira, G.; Haberland, C. (2010): Data of the temporary seismic WILAS network. GFZ Data Services. Other/Seismic Network. doi:10.14470/3N7565750319.
Related Reference(s):(None)
[+]To provide additional references, PIs should contact GEOFON staff.

Network Station List for Network Code 8A

# Code Station description Begin End Loc Channels  
<< return to network list
1 PW01 Station Viana do Castelo, Portugal 2010-223 2011-132 -- HHE HHN HHZ Station Browser Availability Browser
      2012-073 2012-180 -- HHE HHN HHZ Station Browser Availability Browser
2 PW02 Station Braga, Portugal 2010-223 2012-180 -- HHE HHN HHZ Station Browser Availability Browser
3 PW03 Station Chaves, Portugal 2010-188 2012-172 -- HHE HHN HHZ Station Browser Availability Browser
4 PW04 Station Mirandela, Portugal 2010-187 2012-172 -- HHE HHN HHZ Station Browser Availability Browser
5 PW05 Station Mogadouro, Portugal 2010-186 2012-172 -- HHE HHN HHZ Station Browser Availability Browser
6 PW06 Station Castelo de Paiva, Portugal 2011-243 2012-179 -- HHE HHN HHZ Station Browser Availability Browser
7 PW07 Station Sernancelhe, Portugal 2010-186 2012-173 -- HHE HHN HHZ Station Browser Availability Browser
8 PW08 Station Guarda, Portugal 2010-186 2012-173 -- HHE HHN HHZ Station Browser Availability Browser
9 PW09 Station Albergaria a Velha, Portugal 2010-308 2012-172 -- HHE HHN HHZ Station Browser Availability Browser
10 PW11 Station Caramulo, Portugal 2010-222 2012-175 -- HHE HHN HHZ Station Browser Availability Browser
11 PW12 Station Figueira da Foz, Portugal 2010-204 2011-177 -- HHE HHN HHZ Station Browser Availability Browser
12 PW13 Station Marinha Grande, Portugal 2010-219 2012-179 -- HHE HHN HHZ Station Browser Availability Browser
13 PW14 Station Tomar, Portugal 2010-193 2012-181 -- HHE HHN HHZ Station Browser Availability Browser
14 PW15 Station Castelo Branco, Portugal 2010-197 2012-179 -- HHE HHN HHZ Station Browser Availability Browser
15 PW16 Station Rosmaninhal, Portugal 2010-208 2012-111 -- HHE HHN HHZ Station Browser Availability Browser
16 PW17 Station Peniche, Portugal 2010-198 2011-315 -- HHE HHN HHZ Station Browser Availability Browser
17 PW18 Station Gaviao, Portugal 2010-203 2012-178 -- HHE HHN HHZ Station Browser Availability Browser
18 PW19 Station Coruche, Portugal 2010-201 2012-181 -- HHE HHN HHZ Station Browser Availability Browser
19 PW20 Station Montemor, Portugal 2010-195 2012-177 -- HHE HHN HHZ Station Browser Availability Browser
20 PW22 Station Serra de Aire, Portugal 2012-053 2012-181 -- HHE HHN HHZ Station Browser Availability Browser
<< return to network list

Database last updated at 2018 May 25 08:43:18