magnitude threshold meaning in English

地震强度极限

In this paper , two methods are applied to provide the minimum completeness magnitude distribution of seismic catalog within the studied area for a given period . one is used to calculate the lower threshold of the controlled magnitude by seismic station network , which has paid significant role in the design for building seismic station network in the project named capital region earthquake prevention and hazard mitigation demonstration area . the other is applied to result in the distribution of the lower magnitude threshold that follows the g - r relation by directly analyzing seismic catalog
本论文采用两种方法来给出研究区域一定时期内的地震目录的最小完全性震级的分布，一种方法是通过地震台网来计算控制震级下限的分布，通过本论文的空间处理方法处理的结果在“首都圈防震减灾示范区”工程的地震台网的设计时发挥了重要的实际作用；另一种方法是通过对地震目录的分析直接获取满足g - r关系的震级下限的分布，本论文提出了通过限制不同震级地震参与完全性分析的有效距离的方法，增强了这种方法的合理性。