IberArrayIberArrayA broadband transportable array to investigate the A broadband transportable array to investigate the

lithospheric structure of the Iberian Peninsulalithospheric structure of the Iberian Peninsula

Antonio VillaseñorAntonio VillaseñorInstitute of Earth Sciences “Jaume Almera”Institute of Earth Sciences “Jaume Almera”Spanish National Research Council (CSIC)Spanish National Research Council (CSIC)

BarcelonaBarcelona

TOPO-IBERIA: Integrated studiesTOPO-IBERIA: Integrated studiesof topography and 4-D evolutionof topography and 4-D evolution

• Topo-Iberia is a 5-year project funded by the Spanish Ministry of Education 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, 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 with additional support by the CSIC. Total budget: 5.4 M€. Project started a the end of 2006.end of 2006.

• Linking superficial and deep processes (lithosphere and mantle level), as well Linking superficial and deep processes (lithosphere and mantle level), as well as environmental studies such as global change (interactions between as environmental studies such as global change (interactions between tectonics, erosion-sedimentation and climate), natural resources and hazards.tectonics, erosion-sedimentation and climate), natural resources and hazards.

• Integration of different common methodologies and data bases (seismic, Integration of different common methodologies and data bases (seismic, potential fields, satellite imaging, dating methods, analogue & numerical potential fields, satellite imaging, dating methods, analogue & numerical modelling,…) and deployment of a multi-instrumental platform: IberArray.modelling,…) and deployment of a multi-instrumental platform: IberArray.

• Participants: ICTJA-CSIC Barcelona, Univ. Granada, Univ. Oviedo, Univ. Participants: ICTJA-CSIC Barcelona, Univ. Granada, Univ. Oviedo, Univ. Barcelona, Univ. Complutense Madrid, Univ. Autonoma Barcelona, Univ. Cadiz, Barcelona, Univ. Complutense Madrid, Univ. Autonoma Barcelona, Univ. Cadiz, Univ. Jaen, IGME (Geological & Mining Institute of Spain), ROA (Royal Navy Univ. Jaen, IGME (Geological & Mining Institute of Spain), ROA (Royal Navy Observatory) Observatory)

• Involves ~125 Spanish senior researchers.Involves ~125 Spanish senior researchers.

IberArrayIberArray

Seismic networkSeismic network

GPSGPSnetworknetwork

MTMTprofilesprofiles

Broadband stations in Iberia and MoroccoBroadband stations in Iberia and Morocco

Instrumentation: Nanometrics Trillium 120 and Instrumentation: Nanometrics Trillium 120 and TaurusTaurus

•Nanometrics Taurus datalogger

•Nanometrics Trillium 120-P sensor

•40 Gb HD + 4 Gb Flash Card

•2x18 W solar panels

Number: 40 (pool) + 30 (CSIC)

Installation 1: existing short period stationsInstallation 1: existing short period stations

Installation 2: buildingsInstallation 2: buildings

Installation 3: open fieldInstallation 3: open field

Web page of the IberArray broadband networkWeb page of the IberArray broadband network

http://xeon.ija.csic.es/IberArray/http://xeon.ija.csic.es/IberArray/

Software for data acquisition and handlingSoftware for data acquisition and handling

Acquisition: Nanometrics proprietary software (Apollo) to Acquisition: Nanometrics proprietary software (Apollo) to extract data from station and convert to miniSEED.extract data from station and convert to miniSEED.

Data storage and availability: USGS’s CWB (Common Data storage and availability: USGS’s CWB (Common Waveform Buffer). Allows for real-time acquisition (not Waveform Buffer). Allows for real-time acquisition (not used) and remote access to waveform data.used) and remote access to waveform data.

Metadata: USGS’s INV (Inventory) software. Allows book-Metadata: USGS’s INV (Inventory) software. Allows book-keeping of instrumentation, and generates dataless SEED keeping of instrumentation, and generates dataless SEED files for entire network and all epochs.files for entire network and all epochs.

Data quality: USGS’s PQLX software for noise analysis Data quality: USGS’s PQLX software for noise analysis (McNamara and Buland, 2004).(McNamara and Buland, 2004).

Phase picking, relocation, … : SEISAN (Havskov and Phase picking, relocation, … : SEISAN (Havskov and Ottemöller)Ottemöller)

PQLX: interactive software for noisePQLX: interactive software for noiseand quality control analysisand quality control analysis

Use of PQLX to analyze improvementsUse of PQLX to analyze improvementsin station installationsin station installations

PSD signature of seismic and noise sourcesPSD signature of seismic and noise sources

McNamara and Buland (2004)McNamara and Buland (2004)

Surface-wave tomography using cross-correlationsSurface-wave tomography using cross-correlationsof seismic ambient noiseof seismic ambient noise

taken from R.L. Weaver (2005)taken from R.L. Weaver (2005)

Comparison of results using independent dataComparison of results using independent data

Monitoring network performance with noiseMonitoring network performance with noise

Sens-Schönfelder (2008)Sens-Schönfelder (2008)

Use of ambient noise to forecast volcanic eruptionsUse of ambient noise to forecast volcanic eruptions

Brenguier et al. (2008)Brenguier et al. (2008)

TOPO-IBERIA / IberArray: summary in TOPO-IBERIA / IberArray: summary in numbersnumbers

-- 5-year project 2007-2011 (now at end of 2nd year)5-year project 2007-2011 (now at end of 2nd year)

-- 10 Institutions and 125 researchers10 Institutions and 125 researchers

-- Currently 120 broadband stations (35 temporary) in the Currently 120 broadband stations (35 temporary) in the Iberian Peninsula, and 30 (20 temporary) in northern Iberian Peninsula, and 30 (20 temporary) in northern Africa / MoroccoAfrica / Morocco

-- 1st deployment (south): 2007 – summer 20091st deployment (south): 2007 – summer 2009

-- 2nd deployment (center): summer 2009 – end of 2010 2nd deployment (center): summer 2009 – end of 2010 (estimate)(estimate)

-- 3rd deployment (north): end of 2010 or beginning of 20113rd deployment (north): end of 2010 or beginning of 2011

-- Pool of 40 (+30) stations (Trillium 120 + Taurus) for future Pool of 40 (+30) stations (Trillium 120 + Taurus) for future temporary deploymentstemporary deployments