(a) Continuous wavelet transform (CWT) of the average LOS displacements is shown: on the left, around the Lussagnet injection well (LUG-M8) and on the right around the Izaute injection well (IZA-M14). (b) Cross wavelet transform (XWT) of the pressure in the deep reservoir and both average LOS displacements. (c) XWT transform of the cumulated rainfall and both average LOS displacements. (d) The same XWT transform is shown using the surface soil moisture instead of the rainfall. The relative phase relationship is shown as arrows, with in-phase pointing right and anti-phase pointing left and the first time series leading by 90° pointing straight down.