Above and beyond megathrusts—draining pore fluids dampens earthquake tremors - Printable Version +- Earthwaves Earth Sciences Forum (http://www.earthwaves.org/forum) +-- Forum: Earthwaves (http://www.earthwaves.org/forum/forumdisplay.php?fid=16) +--- Forum: Earth Sciences (http://www.earthwaves.org/forum/forumdisplay.php?fid=11) +--- Thread: Above and beyond megathrusts—draining pore fluids dampens earthquake tremors (/showthread.php?tid=650)

Above and beyond megathrusts—draining pore fluids dampens earthquake tremors - marc / berkeley - 12-27-2016 Above and beyond megathrusts—draining pore fluids dampens earthquake tremors While metamorphic reactions in subducting slabs liberate large amounts of fluids, low-frequency earthquakes (LFE) largely occur beneath the impermeable, un-metamorphosed overlying plate, and are rarely found beneath metamorphosed plates. Scientists at Tokyo Institute of Technology and Tohoku University suggest that undrained conditions are a key factor in the generation of LFEs, whereas well-drained conditions reduce pore-fluid pressures at the megathrust and inhibit LFEs and associated tremors. ( Article Link )