Figure 2.

Comparison of daily $dv/v$ with the seismicity and deformation produced during the pre-eruptive and eruptive periods (vertical black dashed line showing the eruption onset). The vertical gray dashed line represents Sept. 10th. (A) Statistical analysis of daily $dv/v$ for all the station pairs (median, black line), together with some $dv/v$ for specific station pairs (PCOR_PLPI: red line, PLPI_PPMA: blue line, PCOR_PPMA: green line). Each boxplot represents the minimum and maximum values of $dv/v$ (lower and upper horizontal lines), its lower and upper quartiles (lower and upper box limits), and its median. The color of the boxplots represents the estimated error on $dv/v$. (B) Time series of GPS ARID deformation appear as blue, orange and black lines for the E-W, N-S and U-D components, respectively. The histogram bars indicate the seismicity possibly related to the fluid injection (green dots) and magmatic intrusion (black dots). The relative velocity variation curves were obtained using MSNoise software¹⁹ (http://www.msnoise.org).