Rigidity variations with depth along interplate megathrust faults in subduction zones

Article Abstract:

The largest earthquakes occur through contact between subducting and overriding tectonic plates in subduction zones. The degree of earthquake shaking is affected by rigidity. A study of the link between the duration of earthquake rupture and source depth, yielding estimates of rigidity variations over plate interfaces, found that if stress drop is assume constant, rigidity seems to increases with depth in each seismogenic zone.

Observations, Seismological research

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Non-volcanic tremor and low-frequency earthquake swarms

Article Abstract:

The tremor beneath Shikoku, Japan, is explained as a swarm of small, low-frequency earthquakes, each of which occurs as shear faulting on the subduction-zone plate interface. The analysis has indicated that tremor and slow slip are different manifestations of a single process.

Science & research, Earthquakes, Plate tectonics

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