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Influence of crustal lithology and the thermal state on microseismicity in the Wakayama region, southern Honshu, Japan
https://nied-repo.bosai.go.jp/records/5097
https://nied-repo.bosai.go.jp/records/5097204754a6-2829-42b0-b272-c08431e3890e
| Item type | researchmap(1) | |||||||||||||||
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| 公開日 | 2023-03-30 | |||||||||||||||
| タイトル | ||||||||||||||||
| 言語 | en | |||||||||||||||
| タイトル | Influence of crustal lithology and the thermal state on microseismicity in the Wakayama region, southern Honshu, Japan | |||||||||||||||
| 著者 |
Sumire Maeda
× Sumire Maeda
× Shinji Toda
× Toru Matsuzawa
× Makoto Otsubo
× Takumi Matsumoto
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| 抄録 | ||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||
| 内容記述 | <title>Abstract</title>Here we investigate the influence of the lithology and thermal state of the upper crust on earthquake distributions beneath the Wakayama region, southern Honshu, Japan, to better understand the influence of crustal conditions on regional seismogenesis. The earthquakes are concentrated in the deeper sections of mafic belts and shallower sections of pelitic belts, based on a comparison of relocated hypocenters and estimated subsurface geological structures. We compare the frictional properties of pelitic rocks and basalt, as obtained from petrological experiments, with the hypocenter depth distributions in pelitic and mafic belts to assess the control of crustal lithology on the depth extent of regional seismicity. The earthquake distributions are consistent with the temperature ranges over which the respective rock types are expected to exhibit a velocity-weakening behavior, based on the petrological experiments. The results suggest that the occurrence of shallow intraplate earthquakes is controlled by the temperature- and lithology-dependent friction of the upper crust. | |||||||||||||||
| 言語 | en | |||||||||||||||
| 書誌情報 |
en : Earth, Planets and Space 巻 73, 号 1 |
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| 言語 | en | |||||||||||||||
| 出版者 | Springer Science and Business Media LLC | |||||||||||||||
| 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 | 10.1186/s40623-021-01503-3 | |||||||||||||||
