Fig. 10From: Active-source seismic survey on the northeastern Hawaiian Arch: insights into crustal structure and mantle reflectorsClose-ups of parts of the a OBS4 and b OBS1 record sections (see Fig. 6a). Arrows indicate wide-angle reflection phases (DRs) at large offsets. The lower panels show the travel times calculated by 2-D ray tracing superimposed on the sections shown in the upper panels. Reduction velocity is 8.5 km/s. c Ray diagram for each DR. Black bars indicate reflection pointsBack to article page