地震震级是利用观测仪器记录地面质点运动参数来确定地震强弱的一种标度。震级标度除了随观测的地动参数(如位移、速度)而导外,还始终与地震波震相、频率及观测仪器联系在一起。即使对于特定的震相(例如体波),震级仍然依赖于使用的地震波频率与地震仪。由于长期以来,有人企图把测定震级的物理基础建立在把“震级”理解为地震波能量的 Earthquake magnitude is the use of observing instruments to record ground particle motion parameters to determine the strength of a scale. In addition to observing geomechanical parameters (such as displacement and velocity), magnitude scales are always associated with seismic phase, frequency, and observation instruments. Magnitude still depends on the seismic frequency and seismometer used, even for specific phases (eg body waves). For a long time, some people tried to establish the physical basis for determining magnitude in order to understand “magnitude” as seismic energy