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Seismicity triggered by fluid injection–induced aseismic slip

Guglielmi, Yves and Cappa, Frédéric and Avouac, Jean-Philippe and Henry, Pierre and Elsworth, Derek (2015) Seismicity triggered by fluid injection–induced aseismic slip. Science, 348 (6240). pp. 1224-1226. ISSN 0036-8075. doi:10.1126/science.aab0476.

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Anthropogenic fluid injections are known to induce earthquakes. The mechanisms involved are poorly understood, and our ability to assess the seismic hazard associated with geothermal energy or unconventional hydrocarbon production remains limited. We directly measure fault slip and seismicity induced by fluid injection into a natural fault. We observe highly dilatant and slow [~4 micrometers per second (µm/s)] aseismic slip associated with a 20-fold increase of permeability, which transitions to faster slip (~10 µm/s) associated with reduced dilatancy and micro-earthquakes. Most aseismic slip occurs within the fluid-pressurized zone and obeys a rate-strengthening friction law µ = 0.67 + 0.045ln (v/v_0) with v_0 = 0.1 µm/s. Fluid injection primarily triggers aseismic slip in this experiment, with micro-earthquakes being an indirect effect mediated by aseismic creep.

Item Type:Article
Related URLs:
URLURL TypeDescription Materials
Guglielmi, Yves0000-0001-9581-7475
Cappa, Frédéric0000-0003-4859-8024
Avouac, Jean-Philippe0000-0002-3060-8442
Elsworth, Derek0000-0002-4942-1151
Additional Information:© 2015 American Association for the Advancement of Science. Received for publication 3 March 2015. Accepted for publication 9 May 2015. The experimental work was funded by the Agence Nationale de la Recherche (ANR) Captage de CO2 through the HPPP-CO2 project and by PACA through the PETRO-PRO project. The rate-andstate fault models for this study were supported by the French Academy of Sciences, the California Institute of Technology Tectonics Observatory, and the ANR HYDROSEIS under contract ANR-13-JS06-0004-01. We thank the SITES S.A.S. engineers H. Caron, C. Micollier, R. Blin, and H. Lançon, and the Petrometalic S.A. engineer J. B. Janovczyk, who jointly developed and operated the probe that enabled this experiment. We also thank the Laboratoire Souterrain à Bas Bruit (LSBB) engineers’ team for their technical support during the installation of the experiment in one of the LSBB boreholes ( Experimental data are available in the supplementary materials.
Group:Seismological Laboratory, Caltech Tectonics Observatory
Funding AgencyGrant Number
Agence Nationale pour la Recherche (ANR)UNSPECIFIED
French Academy of SciencesUNSPECIFIED
Caltech Tectonics ObservatoryUNSPECIFIED
Agence Nationale pour la Recherche (ANR)ANR-13-JS06-0004-01
Issue or Number:6240
Record Number:CaltechAUTHORS:20150611-110529655
Persistent URL:
Official Citation:Seismicity triggered by fluid injection–induced aseismic slip Yves Guglielmi, Frédéric Cappa, Jean-Philippe Avouac, Pierre Henry, and Derek Elsworth Science 12 June 2015: 348 (6240), 1224-1226. [DOI:10.1126/science.aab0476]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58195
Deposited By: Tony Diaz
Deposited On:11 Jun 2015 18:25
Last Modified:10 Nov 2021 22:01

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