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Fig. 5 | Progress in Earth and Planetary Science

Fig. 5

From: Acoustic water bottom investigation with a remotely operated watercraft survey system

Fig. 5

The location of the study area and the bathymetric map (0.2 m interval in depth) obtained by our method. On the bathymetric map, the red dots are the depth measurement points, the blue solid triangles are the submerged trees detected by the high-resolution 455 kHz sonar imaging, and the blue open triangles are the trees detected by the side-scan 455 kHz sonar imaging (based on the ninth Japanese rectangular coordinate system; the top is the north and the original point is 36° 00′ 00″ N, 139° 50′ 00″ E)

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