国家地震烈度速报江苏子系统仪器烈度产出分析∗

对国家地震烈度速报与预警工程部署的烈度速报江苏子系统进行了介绍，简述了 2021 年 12 月系统部署以来的系统产出情况，同时以系统部署以来产出的震级最大的事件即 2021 年 12 月 22 日江苏天宁 M4.2 地震为例，使用 f‐k 方法合成各观测台站上的理论地震图，将实际峰值加速度与理论峰值加速度进行比较，评估烈度速报江苏子系统产出结果的可靠性。结果表明，烈度速报系统产出的各台站峰值加速度随震中距逐渐减小，且和理论地震图的结果较为接近，一定程度上证明了烈度速报江苏子系统产出结果的可靠性。

Analysis of Instrumental Intensity Output of the Jiangsu Subsystem in the National Earthquake Intensity Rapid Reporting System

This paper presents an analysis of the Jiangsu subsystem within the National Earthquake Intensity Rapid Reporting and Early Warning System. It provides an overview of the system''s performance since its implementation in December 2021. The study focuses on the most significant seismic event recorded since deployment-the M4.2 earthquake in Tianning, Jiangsu on December 22, 2021. Using the f-k method, theoretical seismograms were synthesized for various observation stations. By comparing actual peak accelerations with the theoretical values, the reliability of the Jiangsu subsystem''s performance was assessed. The results indicate that the peak ground accelerations produced by the rapid reporting system decreased with increasing distance from the epicenter and were relatively consistent with the theoretical seismograms, thus demonstrating the reliability of the Jiangsu subsystem''s output to a certain extent.