【摘要】 地震预警系统是减轻地震灾害的有效手段之一,世界上多个国家和地区都已经建立了地震预警系统,并在实际应用中取得了显著的减灾实效.由于地震预警系统应用中的高度时效性要求,预警震级计算是整个地震预警系统中最重要也是最困难的一部分.本文回顾总结了地震预警研究中采用的一些震级计算方法,并将其归纳为三大类算法:与初始周期相关的算法、与初始幅值相关的算法和与初始强度相关的算法.对每种算法都做了详尽介绍和仔细分析,同时列举出与该算法相关的研究成果.通过对这些算法的分析总结并结合我国地震观测台网的实际情况,作者推荐τc、Pd两种方法作为我国地震预警系统建设中优先采用的两种预警震级算法.更多还原

【Abstract】 Earthquake early warning(EEW) system is one of the effective ways to mitigate earthquake hazards.Several countries and regions in the world have been built their EEW systems and achieved significant mitigation practical effectiveness during operations.Due to the high degree of timeliness requirements of EEW system,earthquake magnitude estimation is the most important also the most difficult part in the whole system.In this paper,we reviewed and summarized earthquake magnitude estimation methods that applied to EEW systems,and grouped them into three categories;those are methods associated with initial periods,methods associated with initial amplitudes and methods associated with initial intensities.We made detailed introduction of each method and analyzed them carefully,also we enumerate related research results of each method.Through these analyses and considering the actual situation of seismic networks in our country,the author recommends τc and Pd methods as the two priority magnitude estimation methods when we build the EEW system in our country.更多还原