抄録
The authors attempted to detect crustal deformation by interferometric ERS-1/SAR data pairs. The Omaezaki-area which is located on the subduction zone was used as the test site. Three interferograms were generated from three sets of data pairs. Fairly good interferograms were obtained in both flat agricultural and urban districts; however, they were noisy in forest site due to large decorrelation. The changing patterns of phase difference in these interferograms indicated reasonable correspondence with tendency of subsidence of Omaezaki. Relative values of deformation between three data pairs had significant correspondence. Although, the interferograms may also indicate other factors that affected SAR signals during their transmission. The result of this study suggests the applicability of C-band SAR for detecting crustal deformation in Japanese test sites.
