Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors
The recurrence patterns of the Parkfield tremors with period-multiplying slow and fast ruptures provide new insights on the physics of earthquake cycles. However, the mechanisms behind the peculiar recurrence pattern and the coupling between slow-slip events and seismic radiations are still unclear....
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/153687 |
| _version_ | 1826118919572684800 |
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| author | Mei, Cheng Barbot, Sylvain Wu, Wei |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Mei, Cheng Barbot, Sylvain Wu, Wei |
| author_sort | Mei, Cheng |
| collection | NTU |
| description | The recurrence patterns of the Parkfield tremors with period-multiplying slow and fast ruptures provide new insights on the physics of earthquake cycles. However, the mechanisms behind the peculiar recurrence pattern and the coupling between slow-slip events and seismic radiations are still unclear. Here, we conduct direct-shear experiments on polycarbonate and granite fractures under varying stress conditions to investigate the variations of rupture properties near the stability transition. Laboratory slow and fast ruptures sequences produce slip-predictable period-multiplying cycles with correlative acoustic energy release, stress drop, event duration, and recurrence intervals. However, gouge accumulation by damage of the granite fracture provokes changes in stiffness and stress drops ratios over multiple cycles, affecting the recurrence intervals and energy release of consecutive slip events. These findings confirm the link between low-frequency earthquakes and underlying slow-slip events, with period-multiplying cycles naturally occurring near the stability transition. |
| first_indexed | 2024-10-01T04:51:26Z |
| format | Journal Article |
| id | ntu-10356/153687 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:51:26Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1536872022-01-07T07:26:29Z Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors Mei, Cheng Barbot, Sylvain Wu, Wei School of Civil and Environmental Engineering Engineering::Civil engineering Low-Frequency Earthquakes Slow-Slip The recurrence patterns of the Parkfield tremors with period-multiplying slow and fast ruptures provide new insights on the physics of earthquake cycles. However, the mechanisms behind the peculiar recurrence pattern and the coupling between slow-slip events and seismic radiations are still unclear. Here, we conduct direct-shear experiments on polycarbonate and granite fractures under varying stress conditions to investigate the variations of rupture properties near the stability transition. Laboratory slow and fast ruptures sequences produce slip-predictable period-multiplying cycles with correlative acoustic energy release, stress drop, event duration, and recurrence intervals. However, gouge accumulation by damage of the granite fracture provokes changes in stiffness and stress drops ratios over multiple cycles, affecting the recurrence intervals and energy release of consecutive slip events. These findings confirm the link between low-frequency earthquakes and underlying slow-slip events, with period-multiplying cycles naturally occurring near the stability transition. Ministry of Education (MOE) Published version This study was supported by Ministry of Education, Singapore, under award number RG169/16. Sylvain Barbot acknowledges funding from the National Science Foundation, under award number EAR-1848192. 2022-01-07T07:26:29Z 2022-01-07T07:26:29Z 2021 Journal Article Mei, C., Barbot, S. & Wu, W. (2021). Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors. Geophysical Research Letters, 48(7), e2020GL091807-. https://dx.doi.org/10.1029/2020GL091807 0094-8276 https://hdl.handle.net/10356/153687 10.1029/2020GL091807 2-s2.0-85104358900 7 48 e2020GL091807 en RG169/16 Geophysical Research Letters © 2021 American Geophysical Union. All rights reserved. This paper was published in Geophysical Research Letters and is made available with permission of American Geophysical Union. application/pdf |
| spellingShingle | Engineering::Civil engineering Low-Frequency Earthquakes Slow-Slip Mei, Cheng Barbot, Sylvain Wu, Wei Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors |
| title | Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors |
| title_full | Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors |
| title_fullStr | Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors |
| title_full_unstemmed | Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors |
| title_short | Period-multiplying cycles at the transition between stick-slip and stable sliding and implications for the Parkfield period-doubling tremors |
| title_sort | period multiplying cycles at the transition between stick slip and stable sliding and implications for the parkfield period doubling tremors |
| topic | Engineering::Civil engineering Low-Frequency Earthquakes Slow-Slip |
| url | https://hdl.handle.net/10356/153687 |
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