Fig. 2From: Refinement of a gravimetric geoid model for Japan using GOCE and an updated regional gravity field modelGeographical distribution of terrestrial gravity data used in this study. The red dots are the land gravity data (323,431), the dark blue dots the shipborne gravity data (77,389), the light blue dots the altimetry-derived gravity data (2,412,685), and the light green dots EGM2008/RTM fill-in gravity data (109,315), respectivelyBack to article page