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The analysis of a large data set of more than 500 records from 52 large, recent earthquakes shows that this procedure yields values of the estimated energy, E E , in good agreement with values computed from available source parameters, for example as published by the National Earthquake Information Center (NEIC), the average logarithmic residual being only 0.26 units. We analyze the energy‐to‐moment ratio by defining Θ = log 10 ( E E /M 0 ). For regular earthquakes, this parameter agrees well with values expected from theoretical models and from the worldwide NEIC catalogue. There is a one‐to‐one correspondence between values of Θ that are deficient by one full unit or more, and the so‐called “tsunami earthquakes”, previously identified in the literature as having exceedingly slow sources, and believed due to the presence of sedimentary structures in the fault zone. 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Teleseismic estimates of radiated seismic energy: The <i>E/M</i><sub>0</sub> discriminant for tsunami earthquakes 论文

Teleseismic estimates of radiated seismic energy: The <i>E/M</i><sub>0</sub> discriminant for tsunami earthquakes · 相关技术

相关技术