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Showing 1 to 6 of 6 for “"radiated seismic energy"”.
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Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine
Examination of seismic records during the time interval of the Sago Mine disaster in 2006 revealed a small amplitude signal possibly associated with an event in the mine. Although the epicenter of the signature was located in the vicinity where the explosion occurred, it could not be unequivocally …
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Apparent Stress Estimates of Seismic Events Associated with Underground Mining Operations in Sedimentary Rock Units: Implications for Improving Underground Roof Collapse Warning Systems
We analyze recordings of seismic events induced by underground mining operations at the Moonee Colliery, located in Australia, and at the Springfield Pike Limestone Quarry, located in the United States. The data were recorded underground in the vicinity of active mining operations and were …
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Fault plane structure of the 1995 Antofagasta Earthquake (Chile) derived from local seismological parameters
… structures. This can be observed in teleseismic studies through the spatial distribution of slip and seismic moment release caused by the mainshock. Both parameters are often concentrated on patches on the fault plane with much higher values for slip and moment release than their adjacent …
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Quantification of ground motions by broadband simulations
In many procedures of seismic risk mitigation, ground motion simulations are needed to test systems or improve their effectiveness. For example they may be used to estimate the level of ground shaking caused by future earthquakes. Good physical models for ground motion simulation are also thought …
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Determination of the energy magnitude ME : application to rapid response purposes and insights to regional/local variabilities
… and appropriate response. Being related to the radiated seismic energy ES, the energy magnitude ME is a good estimator of the high frequency content radiated by the source which goes into the seismic waves. However, a procedure to rapidly determine ME (that is to say, within 15 minutes after the …
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Geophysical signatures of crack initiation and growth in rocks under uniaxial compression
… magnitude, source dimension, stress drop, and radiated seismic energy of the fractures were successfully estimated for the relaxation and creep experiments. Magnitudes of the AE events were in the range of -9 < ?? < -5, consistent with other laboratory observations, and the radiation efficiency …