Slip zone and energetics of a large earthquake from the Taiwan Chelungpu-fault Drilling project

Article Abstract:

The retrieved cores from the Taiwan Chelungpu-fault Drilling project are presented and the main slip zone associated with the Chi-Chi earthquake is identified. The comparison of the surface fracture energy estimated from grain sizes in the gouge zone of the fault sample and the seismic fracture energy determined from near-field seismic data has shown the contribution of gouge surface energy to the earthquake to be around 6%.

Taiwan, Faults (Geology)

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Low-frequency earthquakes in Shikoku, Japan, and their relationship to episodic tremor and slip

Article Abstract:

A high quality borehole seismic network in southwest Japan allows identification of coherent S-wave arrivals within the tremor, whose sources are classified as low- frequency earthquakes. The study of such low frequency earthquakes through the network provides strong evidence that they occur on the plate interface, coincident with the inferred zone of slow slip.

Japan, Observations, Natural history, Plate tectonics, Shikoku Island

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Dynamic triggering of earthquakes

Article Abstract:

The scaling of dynamic deformations with distance from, and magnitude of, their triggering earthquake is presented. It is demonstrated that they could cause further earthquakes at any distance if their amplitude exceeds several microstrain, regardless of their frequency content.

United States, Surface deformation

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