Fig. 4: Observed and modeled displacements of the 21 August 2017 earthquake.
From: Progressive underplating of mafic material at mid-crustal depth beneath Ischia volcano, Italy
Horizontal (a) and vertical (b) GNSS coseismic displacements. The blue and red arrows represent, respectively, the observed and modeled vectors, at GNSS stations (white circles). The projection of the modeled fault plane is shown as an empty rectangle. c and d are, respectively, the 3D plots of modeled volume variations and slip distribution along the fault plane (on a 250 × 250 m grid), whose geometry is constrained by RFs results. Panels e–h present the LOS displacements relative to the ascending S1 (16–22 August 2017), ascending S1 (17–23 August 2017), descending S1 (16–22 August 2017), and descending CSK (19–23 August 2017); panels i–l report modeled LOS displacements whereas panels m–p show residual LOS displacements; satellite flight paths (black arrows) and LOS are represented; black rectangle is the projection of the modeled fault plane.
