Simulation of triggered earthquakes in the laboratory |
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| Authors: | G A Sobolev A V Ponomarev A V Koltsov V B Smirnov |
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| Institution: | (1) Institute of Seismology, Russian Academy of Sciences, B. Grusinskaya 10, Moscow, Russia |
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| Abstract: | The experiments were conducted for the study of stick-slip at the contact between two granite blocks. Three cases were studied under the following conditions: 1) the increase of load at a constant rate; 2) the additional application of sinusoidal oscillations in the frequency range from 1 to 30 Hz; 3) subjection to the impulse in the kilohertz frequency range. The imposition of sinusoidal oscillations with the amplitude of 15% of the maximal load caused the reduction of time by 10% for the discussed in terms of durability. The high frequency impulse influence increased this effect and also caused essential changes in the amplitude of elastic oscillations generating during the stick-slip. The trigger phenomena should be integrated in prediction models of the time and magnitude of earthquakes. |
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| Keywords: | Stick-slip rock instability model earthquake |
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