SPATIAL CORRELATION BETWEEN INTERFEROMETRIC STACKING PATTERN DEFORMATION AND DAMAGE DISTRIBUTION OF ATHENS 7-9-99 EARTHQUAKE AND ITS SEISMIC SEQUENCE

The study presents an attempt to correlate the spatial distribution of damages and the ground deformation measure by SAR interferometric stacking technique in the case of Athens 7-9-99 earthquake. Damage maps were created for building collapsed and affected areas, built in a GIS environment. The location of the collapsed building was identified using a portable GPS resever and introduced as point thematic map in the GIS. The interferometric images show a clear deformation pattern of fringes mainly in the Thriassio Pedion basin as well as in Athens basin. Comparing the damage maps with the pattern deformation of the interferometric image in the GIS it appears that there in not a clear correlation between the amplitude of deformation and the observed damages. Other parameters seems to affect the distribution of damages the most importannt of which should be the local geological conditions and the vulnerability of the buildings .