2. EERC TEAM An Overview Ragnar Sigbjörnsson UPStrat-MAFA Workshop, Selfoss 24-27 July 2012

3. Prelude South Iceland Lowland has been our ‘field laboratory’ for the last 25 years Research aimed towards seismic risk reduction Close cooperation with the local people The Rector of the University of Iceland and the Mayor of Árborg signed a contract in 1997 that lead to the establishment of EERC The Centre was officially opened in 2000

4. The EERC Team Academic staff: Dr. Ragnar Sigbjörnsson, Professor, Director Dr. Símon Ólafsson, Research Professor Dr. Jónas Elíasson, Research Professor Dr. Benedikt Halldórsson, Assoc. Research Professor Dr. Rajesh Rupakhety, Assoc. Research Professor Sólveig Thorvaldsdóttir, MSE, Research Engineer Ásthildur Elva Bernhardsdóttir, cand oecon, MA, Rsrch Scientist Sigurdur Unnar Sigurdsson, MSc, Research Engineer Aldís Sigfúsdóttir, MSc, PE, Research Engineer Visiting Professors: Dr. Athol J. Carr, Professor Dr. John Douglas, Research Scientist Dr. Apostolos S. Papageorgiou, Professor Dr. Jónas Thór Snæbjörnsson, Professor

5. Office staff: Elínborg Gunnarsdóttir, Manager Katrín Kristjánsdóttir, Research Assistant Doctoral students: Ævar Harðarson, MArch Fjóla G. Sigtryggsdóttir, MSc Ole André Oiseth, MSc MSc-students: Teaching and Research Assistants: Jón Einarsson  Anna Beta Gísladóttir Puja Rupakhety  Einar Óskarsson Hrafnkell Már Stefánsson  Hörður Páll Steinarsson  Steinar Þór Backmann The EERC Team

6. International Cooperation

7. The EERC Team Participating in the Workshop Dr. Ragnar Sigbjörnsson, Professor, Director Dr. Símon Ólafsson, Research Professor Dr. Rajesh Rupakhety, Assoc. Research Professor Sólveig Thorvaldsdóttir, MSE, Research Engineer Ásthildur Elva Bernhardsdóttir, MA, Research Scientist Guests - Visiting Professors: Dr. Jónas Thór Snæbjörnsson, Professor Dr. Radan Ivanov, Professor Office staff: Elínborg Gunnarsdóttir, Manager Katrín Kristjánsdóttir, Research Assistant

9. Seismicity of Iceland An Introduction Ragnar Sigbjörnsson UPStrat-MAFA Workshop, Selfoss 24-27 July 2012

10. Contents Seismo-tectonics of Iceland Earthquake catalogue data Macroseismic field data Strong-motion data Seismic hazard maps

11. Seismo-tectonics of Iceland References: Sigbjörnsson, R & Ólafsson, S. (2004). On the South Iceland earthquakes in June 2000: strong-motion effects and damage. Bollettino di Geofisica Teorica e Applicata, 45(3): 131-152

12. ICELAND MID-ATLANTIC RIDGE SISZ TFZ ~ 1 cm/yr

13. Active central volcanoes (yellow), calderas (red) and fissure swarms (green)

14. Volcanic zones and earthquakes o earthquake > 4 after 1896;  &  recorded by IceSMN;  earthquakes 2000 og 2008

15. Results of GPS-measurements O recording station; lines indicate velocity and direction

16. Active plate boundary North-American Plate Eurasian Plate

17. Volcanic zones and earthquakes o earthquake > 4 after 1896;  &  recorded by IceSMN;  earthquakes 2000 og 2008

18. Vulcanic zones, earthquakes and active plate boundary

19. Earthquake in South Iceland Seismic Zone the last 100 years

20. Surface fracture 21 June 2000

21. Landslide 21 June 2000

22. Damage to road 21 June 2000

23. Damage to farm building 21 June 2000

24. Damage to residential house 17 June 2000

25. Inside a residential house 17 June 2000

26. PTSD June 2000

27. The Árborg Town Hall: The strong-motion array

28. Ground acceleration Basement of Town Hall at Selfoss, 29 May 2009

29. Response acceleration 3rd floor of the Town Hall at Selfoss, 29 May 2009

31. Inside the EERC building University of Iceland 29 May 2008

34. The Árborg Town Hall: Displacement (cm) during the 29. maí 2008 earthquake

35. Earthquake Catalogue of Iceland References: Ambraseys, N.N. & Sigbjörnsson, R (1999). Re ‑ Appraisal of the Seismicity of Iceland, Polytechnica - Engineering Seismology, Reykjavik, ISSN 0255- 9226 Ambraseys, N.N. & Sigbjörnsson (2003). On the seismicity of northwestern Europe: A comparative study of earthquake catalogues, Department of Civil and Environmental Engineering, Imperial College of Science, Technology and Medicine, London, UK, Research report number: 03-001-SM, www.imperial.ac.uk/ www.imperial.ac.uk/ References in the above mentioned publications

36. Parametric Catalogue for Iceland (Ambraseys and Sigbjörnsson, 2000) QuantityValue magnitude scale geographic area period total number of events events with recalculated magnitude range of recalculated magnitudes Surface-wave magnitude, M S 62°N to 68°N and 26°W and 12°W 1896 to 1996 422 276 3.0 – 7.2

37. Temporal distribution of events in the Parametric Earthquake Catalogue for Iceland

38. Spatial distribution of earthquake epicentres in the Parametric Earthquake Catalogue for Iceland

39. Time-line of the Parametric Earthquake Catalogue for Iceland showing surface-wave magnitude as a function of time

40. Distribution of surface-wave magnitudes from the Parametric Earthquake Catalogue for Iceland (a) histogram (b) cumulative distribution.

41. Macroseismic Field Data References: Ambraseys, N.N. & Sigbjörnsson, R (1999). Re ‑ Appraisal of the Seismicity of Iceland, Polytechnica - Engineering Seismology, Reykjavik, ISSN 0255-9226

42. Strong-motion Data References: Ambraseys, N.N. et al. (2002). ISESD – Internet Site for European Strong-Motion Data. European Com­mission, Research-Directorate General, Environment and Climate Programme. Ambraseys, N.N. et al. (2004). Internet Site for European Strong- Motion Data. Bollettino di Geofisica Teorica e Applicata, 45(3): 113- 129 http://www.ISESD.hi.is

43. The Icelandic Strong-motion Network, IceSMN ● ground station; ▲ power plant; ▲ dam; ▼ bridge; ■ building

44. Strong-motion Data The records are available on the Internet ISESD – European Databank Information... http://www.isesd.hi.is/

45. Earthquake Hazard Maps for structural design purposes References: http://eerc.hi.ishttp://eerc.hi.is, the hazard maps were derived by Ragnar Sigbjörnsson in 2002

49. Significant Duration – June 2000

50. The seismic source zones and lineaments applied in probabilistic seismic hazard analysis

51. UPStrat-MAFA Workshop, Selfoss 24-27 July 2012