Shallow seismic crustal structure around Nishinoshima volcano.
We carried out a seismic survey to estimate the shallow crustal structure around Nishinoshima volcano in July 2015. Five seismic lines, on each of which were deployed two ocean bottom seismographs, were shot with an airgun array as a controlled seismic source. We obtained simple P-wave velocity （Vp） models for the four seismic lines around Nishinoshima volcano. Each model consists of four layers with Vp of ～ 2 km/s, 3.4‒3.5 km/s, 4.7 km/s, and 6.0 km/s, from top to bottom. Ascending materials with higher Vp ＞ ～ 4 km/s were detected beneath the bathymetric high at the northwest of Nishinoshima volcano and immediately below the Nishinoshima-Minami Knoll.
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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/1834/15502 |
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