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Backarc basin oceanic crust and uppermost mantle seismic velocity structure of the Shikoku Basin, south of Japan
https://nied-repo.bosai.go.jp/records/3918
https://nied-repo.bosai.go.jp/records/3918233170bd-34fe-4545-8975-186dda9b302e
Item type | researchmap(1) | |||||||||||
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公開日 | 2023-04-27 | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | Backarc basin oceanic crust and uppermost mantle seismic velocity structure of the Shikoku Basin, south of Japan | |||||||||||
著者 |
Nishizawa, A.
× Nishizawa, A.
× Kaneda, K.
× Oikawa, M.
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抄録 | ||||||||||||
内容記述タイプ | Other | |||||||||||
内容記述 | Seismic refraction and reflection measurements were made along three profiles across the Shikoku Basin, one of the three backarc basins on the Philippine Sea plate. The P-wave velocity models show the presence of a very large horizontal irregularity related to the seamounts on the extinct spreading center, transition zones from the Shikoku Basin to Kyushu-Palau Ridge, and from the Shikoku Basin to the Izu-Ogasawara Island arc. However, the other areas were found to have features similar to those of a normal oceanic crustal model composed of oceanic Layer 2 with a high velocity gradient and Layer 3 with a small velocity gradient. The Shikoku backarc basin oceanic crust was found to be characterized by a thinner igneous crust, especially in Layer 3, and the azimuthal anisotropy in the uppermost mantle expected from the seafloor spreading was not detected. Copyright © The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS). | |||||||||||
言語 | en | |||||||||||
書誌情報 |
en : Earth, Planets and Space 巻 63, 号 2, p. 151-155, 発行日 2011 |
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ISSN | ||||||||||||
収録物識別子タイプ | EISSN | |||||||||||
収録物識別子 | 1880-5981 | |||||||||||
DOI | ||||||||||||
関連識別子 | 10.5047/eps.2010.12.003 |