A Source Model to Explain Crustal Deformations by Earthquake Swarm around Izu-shoto in 2000
We used GPS observations to obtain crustal deformations by volcanic activity of Miyake-jima and earthquake swarm around Izu-shoto since the end of June, 2000. The results showed movements extending in a northeast-southwest direction between Miyake-jima and Kozu-shima. In this report, we carried out an inversion analysis of the GPS results and suggested a source model to explain observed crustal deformations. Although it is very difficult to decide a unique model because of few stations and partial locations of the stations, the proposed model is consistent with the GPS results. Results suggest that a dike of about 7-8m in width intruded between Miyake-jima and Kozu-shima. In addition, the model is also consistent with results of dense GPS observations that was carried out at Kozu-shima in June, 2001.
| Main Authors: | , , , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
2002
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| Online Access: | http://hdl.handle.net/1834/15737 |
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