Fig. 3

Examples of the estimated early postseismic slip time series. Now, we show time series for the subfaults in the downdip region near Aomori (Line 1), near Iwate (Lines 2 and 3), near Miyagi (Line 4), and near Ibaraki (Line 5), as indicated by black rectangles in the left-side map. All figures display slip time series of 39 min after the mainshock (05:51–06:30 GPS Time) by setting its start as zero. The time series is shown for each subfault along dip direction with a step of 0.5 m. The top side is updip, while the bottom side is downdip. We show slip in the direction of reverse subduction, indicated by blue arrows inside the figures. Brighter color dots represent 5 min moving average of each time series, which is used for drawing Fig. 7. Black and gray vertical lines indicate the origin time of three large aftershocks. Please note that we removed the coseismic slip of the Iwate-Oki EQ and the Ibaraki-Oki EQ, so the time series look continuous without steps