| 須美寿島付近の海底地形。須美寿島はスミスカルデラ（直径6.6 × 8.3 km、カルデラ床水深 800-900 m）のカルデラ外にある。５万分の１沿岸の海の基本図「須美寿島」（海上保安庁水路部、1997）より作成。 |
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| Bathymetric map around "Smith Rocks (Sumisu-jima)" based on Basic Map of the Sea (1:50,000) "Sumisu-jima" (Japan Coast Guard, 1997). "Smith Rocks (Sumisu-jima)" is a group of islets located on the rim of submarine Smith Caldera (6.6 x 8.3 km diameter, caldera floor at ca. 800-900 m b.s.l.). |