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Antonio Villaseñor Institute of Earth Sciences “Jaume Almera”

IberArray A broadband transportable array to investigate the lithospheric structure of the Iberian Peninsula. Antonio Villaseñor Institute of Earth Sciences “Jaume Almera” Spanish National Research Council (CSIC) Barcelona. TOPO-IBERIA: Integrated studies of topography and 4-D evolution.

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Antonio Villaseñor Institute of Earth Sciences “Jaume Almera”

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  1. IberArrayA broadband transportable array to investigate the lithospheric structure of the Iberian Peninsula Antonio Villaseñor Institute of Earth Sciences “Jaume Almera” Spanish National Research Council (CSIC) Barcelona

  2. TOPO-IBERIA: Integrated studiesof topography and 4-D evolution • Topo-Iberia is a 5-year project funded by the Spanish Ministry of Education and Science (MEC) under the Consolider-Ingenio 2010 Program of Excellence, with additional support by the CSIC. Total budget: 5.4 M€. Project started a the end of 2006. • Linking superficial and deep processes (lithosphere and mantle level), as well as environmental studies such as global change (interactions between tectonics, erosion-sedimentation and climate), natural resources and hazards. • Integration of different common methodologies and data bases (seismic, potential fields, satellite imaging, dating methods, analogue & numerical modelling,…) and deployment of a multi-instrumental platform: IberArray. • Participants: ICTJA-CSIC Barcelona, Univ. Granada, Univ. Oviedo, Univ. Barcelona, Univ. Complutense Madrid, Univ. Autonoma Barcelona, Univ. Cadiz, Univ. Jaen, IGME (Geological & Mining Institute of Spain), ROA (Royal Navy Observatory) • Involves ~125 Spanish senior researchers.

  3. IberArray MT profiles GPS network Seismic network

  4. Broadband stations in Iberia and Morocco

  5. Instrumentation: Nanometrics Trillium 120 and Taurus Number: 40 (pool) + 30 (CSIC) • Nanometrics Taurus datalogger • Nanometrics Trillium 120-P sensor • 40 Gb HD + 4 Gb Flash Card • 2x18 W solar panels

  6. Installation 1: existing short period stations

  7. Installation 2: buildings

  8. Installation 3: open field

  9. Web page of the IberArray broadband network http://xeon.ija.csic.es/IberArray/

  10. Software for data acquisition and handling • Acquisition: Nanometrics proprietary software (Apollo) to extract data from station and convert to miniSEED. • Data storage and availability: USGS’s CWB (Common Waveform Buffer). Allows for real-time acquisition (not used) and remote access to waveform data. • Metadata: USGS’s INV (Inventory) software. Allows book-keeping of instrumentation, and generates dataless SEED files for entire network and all epochs. • Data quality: USGS’s PQLX software for noise analysis (McNamara and Buland, 2004). • Phase picking, relocation, … : SEISAN (Havskov and Ottemöller)

  11. PQLX: interactive software for noise and quality control analysis

  12. Use of PQLX to analyze improvements in station installations

  13. PSD signature of seismic and noise sources McNamara and Buland (2004)

  14. Surface-wave tomography using cross-correlationsof seismic ambient noise taken from R.L. Weaver (2005)

  15. Comparison of results using independent data

  16. Monitoring network performance with noise Sens-Schönfelder (2008)

  17. Use of ambient noise to forecast volcanic eruptions Brenguier et al. (2008)

  18. TOPO-IBERIA / IberArray: summary in numbers • - 5-year project 2007-2011 (now at end of 2nd year) • - 10 Institutions and 125 researchers • - Currently 120 broadband stations (35 temporary) in the Iberian Peninsula, and 30 (20 temporary) in northern Africa / Morocco • - 1st deployment (south): 2007 – summer 2009 • - 2nd deployment (center): summer 2009 – end of 2010 (estimate) • - 3rd deployment (north): end of 2010 or beginning of 2011 • - Pool of 40 (+30) stations (Trillium 120 + Taurus) for future temporary deployments

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