Fig. 3: Central area bathymetry, backscatter, rugosity.
From: Seafloor evidence for pre-shield volcanism above the Tristan da Cunha mantle plume
a Bathymetry for the central area. The hillshade is illuminated by an azimuth of 315°. The newly discovered Isolde and Rockhopper Seamounts (Smt.) lie south and southwest of Tristan da Cunha. b Seabed backscatter classification based on histogram natural breaks [dB]. Unclassified greyscale version in Supplementary Fig. 3a. c Rugosity after DuPreez63. TTFZ Tristan da Cunha Transform Fault And Fracture Zone System.
