Streaks of microearthquakes along creeping faults

摘要: Crustal faults that produce most of their slip aseismically typically generate large numbers small earthquakes. These events have generally been interpreted as coming from localized patches the fault undergo unstable (stick–slip) sliding, surrounded by larger regions stable sliding (creep). In published catalogues microearthquakes often appear to be distributed over portions surface. By accurately locating different orientations in California and Hawaii, we show here instead locations define highly concentrated streaks are characteristically aligned direction slip. The underlying cause this structural organization surface remains determined.