Boneh, Y, Schottenfels, E, Kwong, K et al. (10 more authors) (2019) Intermediate‐Depth Earthquakes Controlled by Incoming Plate Hydration Along Bending‐Related Faults. Geophysical Research Letters, 46 (7). pp. 3688-3697. ISSN 0094-8276
Abstract
Intermediate‐depth earthquakes (focal depths 70–300 km) are enigmatic with respect to their nucleation and rupture mechanism and the properties controlling their spatial distribution. Several recent studies have shown a link between intermediate‐depth earthquakes and the thermal‐petrological path of subducting slabs in relation to the stability field of hydrous minerals. Here we investigate whether the structural characteristics of incoming plates can be correlated with the intermediate‐depth seismicity rate. We quantify the structural characteristics of 17 incoming plates by estimating the maximum fault throw of bending‐related faults. Maximum fault throw exhibits a statistically significant correlation with the seismicity rate. We suggest that the correlation between fault throw and intermediate‐depth seismicity rate indicates the role of hydration of the incoming plate, with larger faults reflecting increased damage, greater fluid circulation, and thus more extensive slab hydration.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019. American Geophysical Union. All Rights Reserved. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | subduction zone; plate hydration; intermediate‐depth earthquakes; fault throw; ocean floor bathymetry |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst of Geophysics and Tectonics (IGT) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Jan 2020 11:53 |
Last Modified: | 15 Jan 2020 11:53 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1029/2018GL081585 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:155622 |