Survey cruise in 2015 of Nishinoshima volcano under eruption.
In June and July 2015, the Japan Coast Guard conducted a comprehensive survey cruise by the S/V Shoyo of Nishinoshima volcano under active eruption. This cruise was highlighted by work on the seafloor mapping within the caution zone for volcanic hazards using the autonomous survey boat Manbo II. In addition, TV news media was allowed to board the S/V Shoyo. The MBES（multi-beam echo sounder) mapping by the Manbo II revealed that significant bathymetric change due to the sedimentation of volcanic products was limited to the eastern-to-southern shelf edge and it reached up to 80 meters. The total volume of erupted lava was estimated as ～ 0.16 km3, which is 9 timesas large as that of the 1973‒1974 eruption of Nishinoshima volcano.
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| Main Authors: | , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/1834/15528 |
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