10.1029-2018JE005826Figure211460009.pptx

(a) map of modeled crustal thickness distribution from the giant impact event; (b) the crustal thickness from Gravity Recovery and Interior Laboratory (GRAIL) observations (Wieczorek et al., 2013); (c) the comparison of the average crustal-thickness profiles from the modeled crustal thickness (a) and that derived from GRAIL observations (b); (d) the comparison of the average crustal-thickness profiles for swath 1 to 4 derived from both the modeled crustal thickness (a) and the crustal thickness derived from GRAIL observation (b). For (a) and (b), data are presented in Mollweide equal-area projection centered at 90°W longitude, with nearside on the right of center and farside on the left of center. The solid and dashed arrows along each swath represent the fit and prediction direction as shown in Table 2. Points on the swaths represent the centers. In (a), the yellow star represents the impact center and the thin white line represents the Procellarum KREEP Terrane boundary on the nearside; the black dashed line represents the South Pole-Aitken (SPA) terrain; the white dashed line represents the size of transient crater (r~1,800 km); the red dashed lines represents the final crater (r~2,800 km); the solid and dashed arrows along each swath represent the fit and prediction direction, respectively. In (c), the gray section from 0 to 60° represents the size of the transient crater; the error bars represent the standard errors for the average crustal-thickens profile. In (d), the thick black and blue lines (from -90 to 180°) represent the mean profiles of swaths derived from the modeled crustal thickness (a) and observed crustal thickness from GRAIL (b), respectively; the green lines (from -50 to 95° or 105°) represent the mean profiles of swaths plotted on (a) and the solid green lines (from 0 to 95° or 105°) represent mean profiles for the fit region.