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Migrating tremor off southern Kyushu as evidence for slow slip of a shallow subduction interface.

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Title: Migrating tremor off southern Kyushu as evidence for slow slip of a shallow subduction interface.
Authors: Yamashita, Y., Yakiwara, H., Asano, Y., Shimizu, H., Uchida, K., Hirano, S., Umakoshi, K., Miyamachi, H., Nakamoto, M., Fukui, M., Kamizono, M., Kanehara, H., Yamada, T., Shinohara, M., Obara, K.
Source: Science (pre-March 2025). 5/8/2015, Vol. 348 Issue 6235, p676-679. 4p.
Subjects: Slow earthquakes, Subduction, Plate tectonics, Seismology
Geographic Terms: Kyūshū Region (Japan), Japan
Abstract: Detection of shallow slow earthquakes offers insight into the near-trench part of the subduction interface, an important region in the development of great earthquake ruptures and tsunami generation. Ocean-bottom monitoring of offshore seismicity off southern Kyushu, Japan, recorded a complete episode of low-frequency tremor, lasting for 1 month, that was associated with very-low-frequency earthquake (VLFE) activity in the shallow plate interface. The shallow tremor episode exhibited two migration modes reminiscent of deep tremor down-dip of the seismogenic zone in some other subduction zones: a large-scale slower propagation mode and a rapid reversal mode. These similarities in migration properties and the association with VLFEs strongly suggest that both the shallow and deep tremor and VLFE may be triggered by the migration of episodic slow slip events. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Migrating tremor off southern Kyushu as evidence for slow slip of a shallow subduction interface.
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  Data: <searchLink fieldCode="AR" term="%22Yamashita%2C+Y%2E%22">Yamashita, Y.</searchLink><br /><searchLink fieldCode="AR" term="%22Yakiwara%2C+H%2E%22">Yakiwara, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Asano%2C+Y%2E%22">Asano, Y.</searchLink><br /><searchLink fieldCode="AR" term="%22Shimizu%2C+H%2E%22">Shimizu, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Uchida%2C+K%2E%22">Uchida, K.</searchLink><br /><searchLink fieldCode="AR" term="%22Hirano%2C+S%2E%22">Hirano, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Umakoshi%2C+K%2E%22">Umakoshi, K.</searchLink><br /><searchLink fieldCode="AR" term="%22Miyamachi%2C+H%2E%22">Miyamachi, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Nakamoto%2C+M%2E%22">Nakamoto, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Fukui%2C+M%2E%22">Fukui, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Kamizono%2C+M%2E%22">Kamizono, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Kanehara%2C+H%2E%22">Kanehara, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Yamada%2C+T%2E%22">Yamada, T.</searchLink><br /><searchLink fieldCode="AR" term="%22Shinohara%2C+M%2E%22">Shinohara, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Obara%2C+K%2E%22">Obara, K.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 5/8/2015, Vol. 348 Issue 6235, p676-679. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Slow+earthquakes%22">Slow earthquakes</searchLink><br /><searchLink fieldCode="DE" term="%22Subduction%22">Subduction</searchLink><br /><searchLink fieldCode="DE" term="%22Plate+tectonics%22">Plate tectonics</searchLink><br /><searchLink fieldCode="DE" term="%22Seismology%22">Seismology</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Kyūshū+Region+%28Japan%29%22">Kyūshū Region (Japan)</searchLink><br /><searchLink fieldCode="DE" term="%22Japan%22">Japan</searchLink>
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  Label: Abstract
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  Data: Detection of shallow slow earthquakes offers insight into the near-trench part of the subduction interface, an important region in the development of great earthquake ruptures and tsunami generation. Ocean-bottom monitoring of offshore seismicity off southern Kyushu, Japan, recorded a complete episode of low-frequency tremor, lasting for 1 month, that was associated with very-low-frequency earthquake (VLFE) activity in the shallow plate interface. The shallow tremor episode exhibited two migration modes reminiscent of deep tremor down-dip of the seismogenic zone in some other subduction zones: a large-scale slower propagation mode and a rapid reversal mode. These similarities in migration properties and the association with VLFEs strongly suggest that both the shallow and deep tremor and VLFE may be triggered by the migration of episodic slow slip events. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: Plate tectonics
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