Energy Budget of Earthquakes and Seismic Efficiency

摘要: An earthquake is a rupture process occurring in Earth's interior under tectonic stresses caused primarily by plate motion. During an earthquake, the stress on fault changes complex fashion, and the potential energy (strain energy gravitational energy) stored Earth released as seismic waves. The ratio of seismic wave to energy is efficiency which determined how stress a function time during rupture. A traditional method investigate the variation plane determine pattern and slip function inversion observed seismograms. The stress can be inferred from slip function. However, is mechanically heterogeneous very both space time. As result, it not possible every detail the rupture pattern. Another approach this problem examine energy budget earthquakes efficiency. amount radiated energy increases with velocity, proportional driving stress. Thus, measuring total energy, we obtain useful information about state faulting. In approach, do not details at point but, instead, entire fault. This is somewhat similar determining thermodynamic parameters (pressure, temperature, etc.) system without motion individual molecules it. We will take latter investigate physical processes associated earthquakes.