Slip rate and tremor genesis in Cascadia

摘要: At many plate boundaries, conditions in the transition zone between seismogenic and stable slip produce slow earthquakes. In Cascadia subduction zone, these events are consistently observed as slow, aseismic on interface accompanied by persistent tectonic tremor. However, not all at other boundaries coincides spatially temporally with tremor, leaving physics of tremor genesis poorly understood. Here we analyze seismic, geodetic, strainmeter data to observe for first time a large, tremor-generating earthquake change from tremor-genic silent back again. The falls reduced speeds when migrating front pauses it loads stronger adjacent fault segment failure. finding suggests that rheology slip-speed-regulated stressing rate control genesis, same section can both without detectable limiting tremor's use proxy slip.