4. EuroArray as a significant part of the European Plate Observatory
Imaging Europe in 4D by completing the existing infrastructure to enable co-ordinated acquisition of seismic, MT, GPS and other geoscientific data across Europe
In planning since 2004
Hans Thybo, University of Copenhagen
Alan G. Jones, Dublin Institute for Advanced Studies
Greg Houseman, University of Leeds

5. EuroArray: Image structure and processes
NERIES: Infrastructure, Interpretation, Earthquakes
Imaging Europe in 4D by completing the existing infrastructure to enable co-ordinated acquisition of seismic, MT, GPS and other geoscientific data across Europe
Complementary!!!
All will benefit from total coverage of Europe

6. EuroArray, Main Issue: 4-D Europe – Assembly of a continent
Inhomogeneous knowledge of the European lithospheric mantle:
some areas known in excellent detail
some areas hardly known at all
Not possible to build a comprehensive model,
thus cannot be predictive about hazards or resources
need a European reference model (absolute velocities)
Need a comprehensive, pan-European imaging of continental dynamics to hypothesize, measure and document processes.
Include geophysical imaging methods (seismology, GPS & MT) and other geosciences, supplemented by
e.g. climatology, oceanography, geochemistry....

7. European Broadband Seismograph Network is very dense in central Europe

8. ...but does not provide dense coverage in “marginal areas”

9. EuroArray - Scientific themes:
Deep Earth processes and the Earth’s topography
Lithosphere secular Evolution
Plumes and Rifting
Continental margin development
Basin formation and mineral resources;
North Atlantic Uplift;
Volcanic Hazards; Magma processes in the crust and mantle;
Active tectonics; Faults, Earthquakes, Hazards
Will help define the European Reference Model

10. Schematic illustration of the Backbone array: 120 km spacing
VEBSN station
Backbone to be developed from the existing observatory networks!!!
120x120 km grid

11. Schematic illustration of the Backbone array: 60 km spacing
After three times side-stepping:
The resulting 60x60 km coverage of Europe
60 km spacing
VEBSN station
Need ocean deployments
How much is possible?
(Schematic, non-detailed illustration!

12. EuroArray data philosophy is fundamental to EPOS
Multi-sensor platform!
physical Strategic Technology Platform
Real-time data transfer as far as possible
Immediate OPEN access over the Internet
Uniform and homogeneous data stream
Full metadata descriptions

13. EuroArray design Complement existing coverage by a semi-mobile array
Seismology
Backbone: VEBSN VBB instruments,
~120 km spacing, move every 2-3 years to obtain 60x60 grid
Targeted (Roving): instruments (SP & BB)
MT:
Bigfoot: 200 instruments at Backbone sites
Targeted (Roving): 100 instruments
GPS: at each onshore site
Need ocean equipment – OBSs and OBMTs
These are the technological challenges re. real-time

14. EuroArray will build on the current strengths in Europe
A very dense network of permanent seismic stations already exists – this is unique for Europe!
EuroArray will further European collaboration on data exchange !
The backbone deployments will make this collaboration attractive to a wide community!
The observatories should have a strong role in running the backbone array
Targeted deployments will address regional and local problems

15. EuroArray a large scale European interdisciplinary research programme
an integral part of EPOS (& Topo-Europe)
build on a strong existing seismic instrumentation in central Europe
Integrate with ORFEUS/NERIES
The whole community will benefit!!!
Pilot projects are in progress: PICASSO and TopoScandesDeep
Funding opportunities should be discussed during the planning of EPOS

16. An integral part of EPOS
EuroArray
An integral part of EPOS
Will integrate the community
EPOS needs EuroArray to demonstrate the value of its infrastructure to the scientific community
EuroArray needs EPOS to provide secure framework for funding the programme through
EU and
National sources