Fluid pressures at hypocenters of moderate to large earthquakes
Many active faults are expected to develop fluid pressures in excess of hydrostatic pressures below 3 to 7 km depth during interseismic periods. Suprahydrostatic fluid pressures are known to reduce the stresses required for brittle failure. Stress differences that trigger moderate to large earthquakes typically range from 40 to 160 MPa, as indicated by earthquake shear stress drops and paleostress estimates obtained from mylonites. For stresses in this range (40-160 MPa), seismic fault...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of Geophysical Research|
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