2021年全球地震灾害概要

利用多渠道收集到的地震灾害资料，对2021年全球地震活动及地震灾害进行了整理，绘制了21世纪前20年全球灾害地震频度与伤亡情况变化曲线及2021年灾害地震分布图，汇总了造成人员伤亡的地震信息及灾害情况，对重大地震灾害做了详细分析，并总结了2021年全球地震灾害的主要特征。与往年地震情况相比，2021年全球地震活动性较强，尤其8级以上强震发生频次大幅增加；2021年地震灾害造成的伤亡有所增加，且灾害地震呈现频度高、伤亡集中、次生灾害频发等特征。针对地震频度高、伤亡原因突出的情况，本文提出了相应的地震灾害预防措施及建议, 强调未来地震防御工作至关重要。 

Overview of worldwide earthquake disasters in 2021

Based on the earthquake disaster data collected by various routes, this paper sorts out the global seismic activity and disasters in 2021. Variation curves of global disaster earthquake frequency with casualties in this century at the beginning twenty years and distribution map of hazard earthquakes in 2021 were plotted. And the earthquake information and disaster situation of earthquakes with casualties were described. Correspondingly, the major earthquake disasters were analyzed in detail, and the main characteristics of global earthquake disasters in 2021 were summarized. Compared with the previous earthquake, it is found that the seismicity is strong in 2021, especially to the occurrence rate of earthquakes with magnitude 8 and above. In 2021, the number of casualties caused by earthquake increased, and disaster earthquakes were characterized by high frequency, concentrated casualties, and frequent secondary disasters. According to the situation of high earthquake frequency and prominent causes of casualties, this paper puts forward corresponding measures and suggestions for earthquake disaster prevention, which emphasizes the importance of earthquake prevention work for the future.