2022 年 68 巻 p. 14-31
Dense geodetic observation networks have contributed to observing a wide variety of fault slips with different time scales including coseismic slips, slow slip events, afterslips, and stable slips. These slip behaviors may be a result of heterogeneous physical properties, especially frictional properties, along the plate interface. I have conducted a series of studies for understanding and predicting such various fault slip behavior based on geodetic data analysis, numerical simulation, and data assimilation. This article briefly summarizes my works on data assimilation of estimating frictional properties and predicting fault slip in the case of the 2003 Tokachi-oki afterslip, and geodetic data analysis on slow slip events concerning anticipated earthquakes in southwest Japan.