Contents

• Contents
• Summary
  • Activity overview
  • Significant achievements as concerns short-term warnings, hazard assessments and understanding crustal processes related to earthquakes
    • New methods and algorithms have been developed and are applied - a basis for earthquake warnings
    • New observations and new understanding of earthquake related crustal processes, a basis for long-term as well as real-time interpretations
    • Significant warnings and other risk mitigating information during the project period
    • Continuation towards new research projects and enhanced warning service based on the results of the PRENLAB projects
  • Meetings and workshops
• The role of the responsible institutions
  • IMOR.DG: Icelandic Meteorological Office, Department of Geophysics
  • UUPP.DGEO: Uppsala University, Department of Geophysics
  • UEDIN.DGG: University of Edinburgh, Department of Geology and Geophysics
  • GFZ.DR.DBL: Stiftung GeoForschungsZentrum Potsdam - Solid Earth Physics and Disaster Research - Earthquakes and Volcanism
  • NVI: Nordic Volcanological Institute
  • CNRS.TT: Centre National de la Recherche Scientifique, Delegation Paris B - Département de Géotectonique
  • UBLG.DF: University of Bologna, Department of Physics
  • CNRS.DTP: Centre National de la Recherche Scientifique, UPR 0234 - Dynamique Terrestre et Planétaire
• Summary of scientific achievements by subprojects and tasks
  • Subproject 1: Monitoring crustal processes for reducing seismic risk
    • Task 1: Database development and service for other scientists
    • Task 2: Enhancing the basis for alerts, warnings and hazard assessments
    • Task 3: Modelling of near-field ground motions in catastrophic earthquakes in Iceland
    • Task 4: Mobile stations for shear-wave splitting monitoring
    • Task 5: Extending the alert system functions by real-time research
    • Task 6: To prepare the SIL system and the alert system for use in other risk areas
    • References
  • Subproject 2: Applying new methods using microearthquakes for monitoring crustal instability
    • Real-time mass evaluation of relative locations
    • The Spectral Amplitude Grouping method (SAG) for analyzing crustal stress conditions. A potential for intermediate-term warnings
    • Real-time inversion of stress tensor
    • References
  • Subproject 3: Using shear-wave splitting to monitor stress changes before earthquakes and eruptions
    • Task 1: Continuous monitoring of shear-wave splitting
    • Task 2: Analysis of shear-wave splitting measurements
    • Task 3: Establish shear-wave splitting map of Iceland
    • Task 4: Calibrate techniques and behaviour if and when changes are identified
    • Task 5: Incorporate shear-wave splitting interpretations into routine analysis
    • Meetings and conferences
    • References
  • Subproject 4: Borehole monitoring of fluid-rock
    interaction
    • Geophysical logging
    • Task 1: Repeated logging in borehole Nefsholt
    • Tasks 2, 3, and 4: Cross correlation of logs of the same type from different campaigns and earlier loggings; comparison of changes in logs of different type; comparison of changes in logs with changes in seismicity, etc.
    • Acknowledgements
    • References
  • Subproject 5: Active deformation determined from GPS and SAR
    • Subpart 5A: SAR interferometry study of the South Iceland seismic zone
    • Subpart 5B: GPS measurements of absolute displacements
    • References
  • Subproject 6: Effects of stress fields and crustal fluids on the development and sealing of seismogenic faults
    • Task 1: Determination of the paleostress fields associated with the test areas from fault-slip data
    • Task 2: Reconstruction of the current stress field associated with the test areas
    • Task 3: Present-day deformation from GPS network and interferograms of ERS-SAR scenes
    • Task 4: Effects of fluid pressure on faulting
    • Task 5: Numerical models on faults and fault populations
    • Task 6: Analyzing the fracture properties of Icelandic rocks in the laboratory
    • Conclusions
    • References
  • Subproject 7: Theoretical analysis of faulting and earthquake processes
    • Subpart 7A: Ridge-fault interaction in Iceland employing crack models in heterogeneous media
    • Subpart 7B: Modelling of the earthquake related space-time behaviour of the stress field in the fault system of southern Iceland
    • References
• Publications