Fig. 6

Time series of volume change. Time is given in date (bottom) and years since the eruption started (top). The beginning of the eruption is indicated by the red line. Assuming a fixed geometry, a Mogi source at a depth of 6.4 km at 41.69° (long) 13.36° (lat). Black lines indicate the best-fit displacement rates, highlighting the non-linearity of the subsidence; the dashed line shows the jump at the start of the time series. CSK data is shown in red, TSX descending in blue and TSX ascending in light blue