Williams, JR orcid.org/0000-0001-5917-4185, Hawthorne, JC orcid.org/0000-0002-4117-2082 and Lengliné, O orcid.org/0000-0003-0678-2587 (2019) The long recurrence intervals of small repeating earthquakes may be due to the slow slip rates of small fault strands. Geophysical Research Letters, 46 (22). 2019GL084778. pp. 12823-12832. ISSN 0094-8276
Abstract
Observations since 1998 have revealed that repeating earthquakes, and particularly small repeating earthquakes, occur less often than expected given their seismically derived slip and the regional fault slip rate. Here we test the hypothesis that small repeaters occur infrequently because they occur on fault segments or strands with low slip rates. We analyze the recurrence interval‐moment scaling of earthquake sequences near Parkfield, California. We find that closely spaced sequences, which likely occur on the same fault strand and respond to the same slip rate, follow a scaling consistent with seismic slip rates while widely spaced sequences, which likely occur on different strands, follow a scaling consistent with the previous counter‐intuitive observations. These results suggest that spatially varying slip rates could create the recurrence interval scaling, though we cannot exclude other explanations.
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: | Repeating earthquakes; Seismology; Aseismic slip; Recurrence interval‐moment scaling |
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: | 04 Nov 2019 11:24 |
Last Modified: | 17 Dec 2024 15:03 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1029/2019gl084778 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:152993 |