NATIONAL AND KAPODISTRIAN UNIVERSITY OF ATHENSFACULTY OF GEOLOGY & GEOENVIRONMENT
DEPARTMENT OF GEOPHYSICS & GEOTHERMICS
Laboratory of Remote SensingGROUND DEFORMATION STUDIES IN CEPHALONIA ISLAND (WESTERN GREECE) BASED ON DGPS & PS INTERFEROMETRY
Evangelos Lagios, Vassilis Sakkas, Fabrizio Novali, Alfio Fumagalli & Sara Del Conte
The Central Ionian Islands GPS Networks 24 bench marks in Cephalonia 14 bench marks in Zakynthos 4 bench marks in Ithaca
Seismic Activity 1964- 2006 (M > 3.6)Seismic Activity 2006Present(M > 3.6)
Lefkas Earthquake August 14, 2003 Mw = 6.3
Zakynthos Seismic Activity March- April 2006
Cephalonia Island
24 GPS bench marks
DGPS Results2001 - 20032003 - 2010
2001-2010
PSInSARTM product of Cephalonia Island
Processed by Tele-Rilevamento Europa (TRE) ERS descending: 39 images4/19/1992 - 2/27/2000
ENVISAT descending: 21 images6/25/2003 - 11/5/2008
Reference Station (No 06)ITRF 2005
ERS PS Descending(1992 2000)
Velocity Field(mm/yr)
ENVISAT PS Descending(2003 - 2008)
Velocity Field(mm/yr)
ERS Velocity Standard Deviation
ENVISAT Velocity Standard Deviation
V < 0 < 0V < 0 > 0V > 0 < 0V > 0 > 0PS Time-Series
ERS Acceleration Field V < 0V > 0
ENVISAT Acceleration Field V < 0V > 0
PS TIME-SERIES
Identification of Critical Area based on Observed Seismic Energy Released
Star indicates the center of the two circles indicating Low (inside small circle) and High seismic energy release (area between the two circles).
Identification of Critical Area based on Modelling of Observed Seismic Accelerating Strain
Critical Time Estimation based on Temporal Analysis of Seismicity
Critical Time Estimation based on Accelerating Seismicity
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