Fig. 7
Schematic illustration of mass balance between the two deflation sources and the discharged plume. Qs, Qd and Qout correspond to extruded fluid from the shallow source, the deep sources and the discharged plume, respectively. ΔVs is deflated volume of the shallow source. ΔLd indicates baseline contraction due to the deep deflation. Deformation at the surface caused by deflations of deep and shallow sources brings displacements of GNSS stations and change in LOS distance toward the satellite