<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Volumetric components in the earthquake source related to fluid injection and stress state"^^ . "We investigate source processes of fluid-induced seismicity from The Geysers geothermal reservoir in California to determine their relation with hydraulic operations and improve the corresponding seismic hazard estimates. Analysis of 869 well-constrained full moment tensors (Mw 0.8–3.5) reveals significant non-double-couple components (>25%) for about 65% of the events. Volumetric deformation is governed by cumulative injection rates with larger non-double-couple components observed near the wells and during high injection periods. Source mechanisms are magnitude dependent and vary significantly between faulting regimes. Normal faulting events (Mw < 2) reveal substantial volumetric components indicating dilatancy in contrast to strike-slip events that have a dominant double-couple source. Volumetric components indicating closure of cracks in the source region are mostly found for reverse faulting events with Mw > 2.5. Our results imply that source processes and magnitudes of fluid-induced seismic events are strongly affected by the hydraulic operations, the reservoir stress state, and the faulting regime."^^ . "2017-01" . . "44" . "2" . . "American Geophysical Union"^^ . . . "Geophysical Research Letters"^^ . . . "00948276" . . . . . . . . . . . . . . "Patricia"^^ . "Martinez-Garzon"^^ . "Patricia Martinez-Garzon"^^ . . "Grzegorz"^^ . "Kwiatek"^^ . "Grzegorz Kwiatek"^^ . . "Georg"^^ . "Dresen"^^ . "Georg Dresen"^^ . . "Marco"^^ . "Bohnhoff"^^ . "Marco Bohnhoff"^^ . . "GFZ German Research Centre for Geosciences, Geomechanics and Rheology, Helmholtz Centre Potsdam, Potsdam, Germany"^^ . . . "GFZ German Research Centre for Geosciences, Geomechanics and Rheology, Helmholtz Centre Potsdam, Potsdam, Germany"^^ . . . "GFZ German Research Centre for Geosciences, Geomechanics and Rheology, Helmholtz Centre Potsdam, Potsdam, Germany"^^ . . . "GFZ German Research Centre for Geosciences, Geomechanics and Rheology, Helmholtz Centre Potsdam, Potsdam, Germany"^^ . . . . . . "HTML Summary of #1930 \n\nVolumetric components in the earthquake source related to fluid injection and stress state\n\n" . "text/html" . . . "Source parameter estimation" . . . "Technology-seismicity interaction" . . . "Stress field modeling" . . . "Geysers" . . . "Geothermal energy production" . .