矩震级

A.里氏震级在学术上现在已经被“矩震级”1所取代，它们都是用来衡量地震释放出的能量的多少。

A. THE RICHTER SCALE , WHICH has technically been replaced by the " moment magnitude " 1 scale , measures the energy released by an earthquake .

发生MW≥7.0地震8次，最大震级达MW8.4。6月23日秘鲁沿海发生了MW8.4地震，这是36年来矩震级最大的地震。

Earthquakes of M W ≥ 7 0 occurred in the world , the maximum magnitude reached M W 8.4.On June 23 , the earthquake of M W 8 4 took place near the coast of Peru , being the largest one with moment magnitude in recent 36 years .

曾经被记录的用力矩震级描述的最大的地震是9.5级。

The largest earthquake ever recorded on the moment magnitude scale measured 9.5 .

中国历史大地震的矩震级

The moment magnitudes of historical earthquakes in China

在矩震级计算中，使用了陈培善提出的，利用加速度测定矩震级的公式；

The formula for determining moment magnitude using acceleration given by Chen Peishan is used , too .

矩震级标度是从地震矩换算过来的，换算关系中地震应力降与剪切模量估算的不准确会对矩震级标度产生影响。

Moment magnitude is transformed from seismic moment , so the estimation inaccuracy of stress drop and shear modulus will affect moment magnitude scaling .

文章指出，矩震级是一个表征地震绝对大小的量，它与地震震源的物理过程直接关联，不会饱和；

As an absolute measure of earthquake size , moment magnitude is directly related to physical process earthquake source and does not suffer from saturation .

地震所造成的灾害与地震的震源参数，尤其足震源机制、矩震级的大小及震源深度等直接相关。

The earthquake disaster is directly related to the source parameters of the earthquake , especially its focal mechanism and depth , and its moment magnitude .

在划分近断层区域时，提出了相对断层距的概念，即断层距和矩震级的比值（dr/Mw）。

When defining the near-fault region , a concept of Normalized Rupture Distance ( NRD ) is established , and this distance is defined as the ratio of rupture distance to moment magnitude ( dr / Mw ) .

地震矩、震级、震源尺度及应力降之间相互关系的研究

Study on relationship among moment , magnitude , source size and stress drop

本文从水平构造应力作用观点出发，研究了各类震源的应力场、形变场和倾斜场，推导了由垂直形变资料估计地震矩和震级公式。

In this paper , from the point of view of the action of horizontal tectonic stress , the author has investigated the stress , deformation and tilt fields of the earthquake sources and derived the formulas to evaluate the seismic moment and magnitude from the vertical deformation data .