1. NATIONAL AND KAPODISTRIAN UNIVERSITY OF ATHENS FACULTY OF GEOLOGY & GEOENVIRONMENT DEPARTMENT OF GEOPHYSICS & GEOTHERMICS Laboratory of Remote Sensing GROUND DEFORMATION STUDIES IN CEPHALONIA ISLAND (WESTERN GREECE) BASED ON DGPS & PS INTERFEROMETRY Evangelos Lagios, Vassilis Sakkas, Fabrizio Novali, Alfio Fumagalli & Sara Del Conte

3. Seismic Activity 1964- 2006 ( M > 3.6 ) Seismic Activity 2006–Present ( M > 3.6 )

6. DGPS Results 2001 - 2003 2003 - 2010

7. 2001-2010

9. Reference Station (No 06) ITRF 2005

10. ERS PS Descending (1992 – 2000) Velocity Field (mm/yr)

11. ENVISAT PS Descending (2003 - 2008) Velocity Field (mm/yr)

12. ERS Velocity Standard Deviation

13. ENVISAT Velocity Standard Deviation

14. V < 0 α < 0 V < 0 α > 0 V > 0 α < 0 V > 0 α > 0 PS Time-Series

15. ERS Acceleration Field V < 0 V > 0

16. ENVISAT Acceleration Field V < 0 V > 0

17. PS TIME-SERIES

18. Identification of Critical Area based on Observed Seismic Energy Released Star indicates the center of the two circles indicating L ow (inside small circle) and High seismic energy release (area between the two circles).

19. Identification of Critical Area based on Modelling of Observed Seismic Accelerating Strain

20. Critical Time Estimation based on Temporal Analysis of Seismicity

21. Critical Time Estimation based on Accelerating Seismicity