Fig. 7

Time series of the GNSS baselines whose locations are shown in Fig. 1. The original plots were made by the Japan Meteorological Agency. Blue dashed line is the baseline length change predicted by the shallow deflation source model, whereas the red dashed line on the left indicates the expansion trend during 2002–2007. A rapid extensional change of 2 cm at the time of the 2007 eruption was interpreted as inflation of a source at 3 km depth by Takagi and Onizawa (2016)