relation: https://episodesplatform.eu/eprints/2273/
title: The spatial footprint of injection wells in a global compilation of induced earthquake sequences
creator: Goebel, Thomas H. W.
creator: Brodsky, Emily E.
subject: Technology-seismicity interaction
subject: Australia
subject: France
subject: Germany
subject: St. Gallen
subject: USA
subject: Geothermal energy production
description: Fluid injection can cause extensive earthquake activity, sometimes at unexpectedly large distances. Appropriately mitigating associated seismic hazards requires a better understanding of the zone of influence of injection. We analyze spatial seismicity decay in a global dataset of 18 induced cases with clear association between isolated wells and earthquakes. We distinguish two populations. The first is characterized by near-well seismicity density plateaus and abrupt decay, dominated by square-root space-time migration and pressure diffusion. Injection at these sites occurs within the crystalline basement. The second population exhibits larger spatial footprints and magnitudes, as well as a power law–like, steady spatial decay over more than 10 kilometers, potentially caused by poroelastic effects. Far-reaching spatial effects during injection may increase event magnitudes and seismic hazard beyond expectations based on purely pressure-driven seismicity.
publisher: American Association for the Advancement of Science
date: 2018
type: Article
type: NonPeerReviewed
identifier:   Goebel, Thomas H. W. and Brodsky, Emily E.  (2018) The spatial footprint of injection wells in a global compilation of induced earthquake sequences.  Science, 361 (6405).  pp. 899-904. DOI: https://doi.org/10.1126/science.aat5449 <https://doi.org/10.1126/science.aat5449>     
relation: https://doi.org/10.1126/science.aat5449
relation: doi:10.1126/science.aat5449