地震预警信息发布时延分析  

Time-Delay Analysis of the Releasing Earthquake Early Warning Information

作　　者：何凯[1,2] 杜瑞林[1,2] 魏贵春[1,2] 戴苗[1,2] 董彦君[1,2] 侯健民[3] 

机构地区：[1]湖北省地震局,武汉市洪山侧路40号430071 [2]中国地震局地震研究所(地震预警湖北省重点实验室),武汉市洪山侧路40号430071 [3]中国地震台网中心,北京市南横街5号100045

出　　处：《大地测量与地球动力学》2016年第11期1031-1034,共4页Journal of Geodesy and Geodynamics

基　　金：地震预警身份信息识别与认证编码(16A18ZX062)~~

摘　　要：对地震预警信息发布时延作调研后认为,预警接收终端的发布时延小于1s;广播、电视发布时延为几s;互联网发布（新媒体、手机APP、第三方平台推送）时效性受并发量影响,在千万级用户时发布时延是30～40s。因此,应采用分区域分级发布策略,以提高发布时效。以汶川地震为例,针对社会公众发布预警信息的时效分析结果表明,在首台触发3～4s内开始发布预警信息,震中20～50km范围内95%以上的网民有1～7s的预警时间,而破裂最大区域（北川）95%以上的网民将获得30s以上的预警时间。In this paper,according to the different ways of release,we perform a detailed analysis of earthquake early warning information release time-delay.The results show that the release time-delay by warning receiving terminal is less than 1second.It is the same with radio or television release,but efficiency is greatly influenced by time period.Using the internet（new media,mobile phone APP,third-party platform to push）release time-delay is greatly influenced by user concurrency：ten million users of release time delay is 30 to 40seconds,so we argue that we should use fractal area classification release strategy to effectively improve release time.Analysis of the Wenchuan earthquake for example,shows that within 20 to 50km,more than 95% of Internet users have 1-7seconds of warning time;more than 95% of the Internet users who are in the biggest rupture area（Beichuan）will gain more than 30 seconds of warning time.

关 键 词：地震预警 信息发布时延 新媒体 

分 类 号：P315[天文地球—地震学]