All articles tagged with #dilatancy strengthening
Researchers studying the Gofar oceanic transform fault off Ecuador found that barrier zones—networks of tiny, water-filled faults—act as active brakes, using dilatancy strengthening to buffer rock and prevent runaway earthquakes. Data from two long-term ocean-bottom seismic deployments show similar behavior across fault segments, suggesting these features may regulate quake size on other oceanic faults and could improve seismic models.
Scientists studying the Gofar transform fault off Ecuador found fractured, seawater-filled rock zones that act as dynamic brakes, repeatedly limiting ruptures to around magnitude 6 with a remarkably regular cycle. Seafloor sensors deployed in 2008 and again from 2019–2022 recorded bursts of small quakes in barrier regions before major ruptures and quiescence afterward, consistent with a dilatancy-strengthening mechanism driven by trapped fluids. The study suggests such barrier zones actively control rupture propagation on oceanic transform faults and could inform broader models of underwater earthquakes, though these faults lie far from shore communities.