Fig. 7From: Shallow volcanic reservoirs and pathways beneath Aso caldera revealed using ambient seismic noise tomographyMeasured Rayleigh-wave phase-velocity dispersion curves: a BB station pairs; b SP station pairs; c integrated BB and SP station pairs. In a–c, the black lines indicate individual dispersion curves and the gray lines are the averages with standard deviations. d Number of phase-velocity measurements in a–c for each period. Phase-velocity maps were constructed from the 1–5-s period bandBack to article page