@article{fdi:010086906,
  title = {{P}revalence of aseismic slip linking fluid injection to natural and anthropogenic seismic swarms},
  author = {{D}anre, {P}. and {D}e {B}arros, {L}. and {C}appa, {F}. and {A}mpuero, {J}ean-{P}aul},
  editor = {},
  language = {{ENG}},
  abstract = {{A}nthropogenic fluid injections at depth induce seismicity which is generally organized as swarms, clustered in time and space, with moderate magnitudes. {E}arthquake swarms also occur in various geological contexts such as subduction zones, mountain ranges, volcanic, and geothermal areas. {W}hile some similarities between anthropogenic and natural swarms have already been observed, whether they are driven by the same mechanism, or by different factors, is still an open question. {F}luid pressure diffusion or aseismic deformation processes are often proposed to explain observations of hypocenters migration during swarms, while recent models suggest that swarm seismicity is rather triggered by fluid-induced aseismic fault slip. {H}ere, using a global compilation of 22 natural and anthropogenic swarms, we observe that duration, migration velocity, and total moment scale similarly for all swarms. {T}his supports a common driving process for both natural and induced swarms. {T}he scaling relations are similar to those found for slow slip events. {T}hese observations highlight the prevalence of fluid-induced aseismic slip as main driver of earthquakes migration during swarms. {A}fter quantifying aseismic slip released in the swarms, we propose an approach to estimate the seismic-to-total moment ratio, which we then compare to a theoretical estimation that depends on the migration velocity of the swarm and the effective stress drop. {O}ur findings lead to a generic explanation of the process driving earthquake swarms that might open new possibilities to monitor seismic swarms. {P}lain {L}anguage {S}ummary {E}arthquake swarms are a particular type of seismic activity, during which a sequence of many earthquakes occurs without being initiated by a larger one. {S}warms can be induced by anthropic hydraulic injections at depth, like during geothermal power exploitation and massive storage of diverse fluids (i.e., wastewater, {CO}2) in porous reservoir formations. {N}atural earthquake swarms are also observed in a large variety of geological contexts. {P}revious works showed that natural and injection-induced swarms share some similarities, like the migration of seismicity. {H}owever, their underlying processes remain unclear. {H}ere, we explain the observed similarities in both types of swarms by a model in which earthquakes are triggered by the propagation of an aseismic slip transient, which in turn is induced by pressurized fluid circulation. {T}his model reconciles a suite of independent observations made over different length and time scales and provides a generic explanation of the driving process for the migration of earthquake swarms.},
  keywords = {seismology ; fluid injection ; earthquake swarms ; aseismic slip ; seismicity migration},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {S}olid {E}arth},
  volume = {127},
  numero = {12},
  pages = {e2022{JB}025571 [16 ]},
  ISSN = {2169-9313},
  year = {2022},
  DOI = {10.1029/2022jb025571},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086906},
}