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Title: Induced seismicity provides insight into why earthquake ruptures stop

Injection-induced earthquakes pose a serious seismic hazard but also offer an opportunity to gain insight into earthquake physics. Currently used models relating the maximum magnitude of injection-induced earthquakes to injection parameters do not incorporate rupture physics. We develop theoretical estimates, validated by simulations, of the size of ruptures induced by localized pore-pressure perturbations and propagating on prestressed faults. Our model accounts for ruptures growing beyond the perturbed area and distinguishes self-arrested from runaway ruptures. We develop a theoretical scaling relation between the largest magnitude of self-arrested earthquakes and the injected volume and find it consistent with observed maximum magnitudes of injection-induced earthquakes over a broad range of injected volumes, suggesting that, although runaway ruptures are possible, most injection-induced events so far have been self-arrested ruptures.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [3] ; ORCiD logo [4]
  1. King Abdullah Univ. of Science and Technology, Thuwal (Saudi Arabia); Comenius Univ., Bratislava (Slovakia)
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  3. King Abdullah Univ. of Science and Technology, Thuwal (Saudi Arabia)
  4. Univ. Cote d'Azur, Nice (France); Institut Univ. de France, Paris (France)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 3; Journal Issue: 12; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES
OSTI Identifier:
1479357

Galis, Martin, Ampuero, Jean Paul, Mai, P. Martin, and Cappa, Frédéric. Induced seismicity provides insight into why earthquake ruptures stop. United States: N. p., Web. doi:10.1126/sciadv.aap7528.
Galis, Martin, Ampuero, Jean Paul, Mai, P. Martin, & Cappa, Frédéric. Induced seismicity provides insight into why earthquake ruptures stop. United States. doi:10.1126/sciadv.aap7528.
Galis, Martin, Ampuero, Jean Paul, Mai, P. Martin, and Cappa, Frédéric. 2017. "Induced seismicity provides insight into why earthquake ruptures stop". United States. doi:10.1126/sciadv.aap7528. https://www.osti.gov/servlets/purl/1479357.
@article{osti_1479357,
title = {Induced seismicity provides insight into why earthquake ruptures stop},
author = {Galis, Martin and Ampuero, Jean Paul and Mai, P. Martin and Cappa, Frédéric},
abstractNote = {Injection-induced earthquakes pose a serious seismic hazard but also offer an opportunity to gain insight into earthquake physics. Currently used models relating the maximum magnitude of injection-induced earthquakes to injection parameters do not incorporate rupture physics. We develop theoretical estimates, validated by simulations, of the size of ruptures induced by localized pore-pressure perturbations and propagating on prestressed faults. Our model accounts for ruptures growing beyond the perturbed area and distinguishes self-arrested from runaway ruptures. We develop a theoretical scaling relation between the largest magnitude of self-arrested earthquakes and the injected volume and find it consistent with observed maximum magnitudes of injection-induced earthquakes over a broad range of injected volumes, suggesting that, although runaway ruptures are possible, most injection-induced events so far have been self-arrested ruptures.},
doi = {10.1126/sciadv.aap7528},
journal = {Science Advances},
number = 12,
volume = 3,
place = {United States},
year = {2017},
month = {12}
}