Detection of crustal deformation induced by earthquake and volcanic activities in Java, Indonesia

Both earthquake and volcanic activity induce crustal deformation, though the mechanism and appearance of deformation are different. Many successful cases of differential SAR interferometry for individual seismic and volcanic deformation detection have been reported, however in the area where earthquake and volcanic activities coexists, crustal deformation becomes much complicated for the double causes. Less was reported on how the two crustal motions influence each other in interferograms. In May 2006, two active volcanos erupted after the Ms 6.3 Indonesia Java earthquake. Interferometric Envisat ASAR data were used for measuring the crustal deformation co-affected by earthquake and volcanic activities and we got new knowledge about the complicated deformation and the potential of IN SAR.