At 07:10:39 (GMT ) on 1st January 2024, a devastating earthquake struck the west coast of Honshu, Japan. According to the Global Centroid Moment Tensor (CMT) Project, the magnitude and depth of the earthquake are respectively 7.5 Mw and 12 km; and the epicentre is located at Noto, Ishikawa Prefecture, Honshu (latitude: 37.490°N, longitude: 137.170°E). Two weeks after the earthquake (up to 15th January), the death toll had risen to 221. Besides heavy casualties, post-seismic ground deformation caused by the earthquake is intensively reported. In order to study the ground deformation caused by this large and shallow earthquake, the satellite geodetic technique, namely the synthetic aperture radar interferometry or interferometricsynthetic aperture radar, InSAR, will be adopted in this study. Moreover, Sentinel 1 Level 1 SLC product from the Copernicus Program will be utilized. An InSAR processing system based on the Generic Mapping Tools (GMT), or GMTSAR, for short, is used for data processing. Preliminary pre-seismic, co-seismic, and post-seismic results derived from GMTSAR will be shown together with the outcomes from the Sentinel Application Platform (SNAP) if applicable.
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Sin-Mei Ng (2024) studied this question.
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