基于海量视频监控的中小地震烈度快速判断方法尝试

Fast Determination Method of Seismic Intensity Distribution of Medium-small Earthquakes Based on Massive Video

震后在海量监控资料的支持下,利用定性分析烈度经验矩阵建立监控视频与地震烈度的相对关系,在视频监控中提取震害和烈度信息。为进一步提高烈度判读的效率,建立基于视频图元变化的地面强震动定量分析方法,计算出监控点的地震动峰值加速度值,并将该方法封装成为软件,其分析结果可作为现场灾害调查和确定最终烈度分布的参考,提高地震灾情获取和快速评估的时效性。浙江省地震局开展了基于海量视频监控的中小地震烈度快速判断方法研究,并在2014年文成—泰顺4.2级地震应急中初步应用。

The relative relationship between monitoring video and seismic intensity is established. The empirical matrix is used to qualitatively analyze the seismic intensity based on the massive monitoring data. And we extract seis- mic damage and intensity information in video, and establish a method of strong ground motion analysis based on the change of the video primitive. The peak acceleration value of the ground motion can be calculated and packaged into software and thus the earthquake can be extracted in the quake zone of video monitoring. And this result can be used as a reference of disaster field investigation and evaluation of earthquake intensity distribution. Earthquake Administration of Zhejiang Province launched fast determination method of seismic intensity distribu- tion based on massive video, and in 2014, it preliminary application achieved good results in the Wencheng - Taishun Ms4.2 earthquake emergency.