Nature Communications (Aug 2021)
Seismicity at the Castor gas reservoir driven by pore pressure diffusion and asperities loading
Abstract
The 2013 Castor seismic sequence, offshore Spain, is a rare example of seismicity induced by gas storage operations. Here we show that early seismicity marked the progressive failure of a fault in response to pore pressure diffusion, while later larger earthquakes resulted by the failure of loaded asperities.