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3-DIMENSIONAL Q STRUCTURE BENEATH THE KANTO-TOKAI DISTRICT, JAPAN
https://nied-repo.bosai.go.jp/records/4217
https://nied-repo.bosai.go.jp/records/42175a7b79ae-98b9-48cb-aef6-0f2921e2fcfc
| Item type | researchmap(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-30 | |||||||
| タイトル | ||||||||
| 言語 | en | |||||||
| タイトル | 3-DIMENSIONAL Q STRUCTURE BENEATH THE KANTO-TOKAI DISTRICT, JAPAN | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 著者 |
S SEKIGUCHI
× S SEKIGUCHI
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| 抄録 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | The Q structure of the upper mantle beneath the Kanto-Tokai district, central Japan, where the Eurasian, Pacific and Philippine Sea plates are converging, is investigated from seismic P- and S-wave spectral ratios by means of a three-dimensional (3-D) inversion method. It is found that the subducting Philippine Sea and Pacific plates are characterized by high-Q zones. A high-Q zone also exists between the Philippine Sea plate and the Pacific plate, to the east of the volcanic front. On the other hand, a low-Q zone in the uppermost mantle extends westward horizontally from the volcanic front under the Philippine Sea plate, and appears to exist over the wedge mantle beneath the western Tokai district. A very low Q value obtained here is roughly equal to the average Q value in the low-velocity layer derived from surface wave and free oscillation data. A low-Q region that suggests a magma chamber under active volcanoes is not detected in the crust. | |||||||
| 言語 | en | |||||||
| 書誌情報 |
en : TECTONOPHYSICS 巻 195, 号 1, p. 83-104 |
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| 出版者 | ||||||||
| 言語 | en | |||||||
| 出版者 | ELSEVIER SCIENCE BV | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0040-1951 | |||||||
| DOI | ||||||||
| 関連識別子 | 10.1016/0040-1951(91)90145-I | |||||||
