Ocean Bottom Seismographic Observation around the Miyake-jima, Kozu-shima and Nii-jima in July, 2000 (Preliminary Rcport)
Active earthquake swarm had begun around the Miyake-jima, Kozu-shima and Nii-jima with volcanic activity of the Miyake-jima on June 26, 2000. We, Hydrographic Department, carried out several geological and geophysical surveys to elucidate the present seismic and volcanic activity of this region since July 2000. The survey includes multi beam swath bathymetry, single-channel seis mic reflection, sidescan imaging, microseismocity, magnetic and gravity measurements. In this paper, we preliminarily report mainly hypocenter distribution deduced from ocean bottom seisrno graphic observation.
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| Main Authors: | , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
2001
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| Online Access: | http://hdl.handle.net/1834/15733 |
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| Summary: | Active earthquake swarm had begun around the Miyake-jima, Kozu-shima and Nii-jima with volcanic
activity of the Miyake-jima on June 26, 2000. We, Hydrographic Department, carried out
several geological and geophysical surveys to elucidate the present seismic and volcanic activity of
this region since July 2000. The survey includes multi beam swath bathymetry, single-channel seis
mic reflection, sidescan imaging, microseismocity, magnetic and gravity measurements. In this
paper, we preliminarily report mainly hypocenter distribution deduced from ocean bottom seisrno
graphic observation. |
|---|