【摘要】 对全国自动地震速报系统进行了初步的评估.通过2010年1月1日—2011年12月31日的自动定位结果与全国正式目录的对比,分别得出了3套自动定位系统总体误差以及全国和全球的误差插值图,并对结果进行了总结.同时,还针对3套自动定位系统的漏报和误报情况进行了分析和讨论.总体来说,现阶段自动地震速报系统整体上对于首都圈地区M≥3.0,国内其它地区M≥4.0(部分台站稀疏的西部地区M≥5.0),国外M≥7.0的地震基本可以达到全面覆盖的程度,可以作为正式地震速报的参考,对于建立"自动报—正式报"的两级地震速报制度能提供有力的技术支撑.更多还原

【Abstract】 The paper presents an overall preliminary evaluation of China ’ s automatic earthquake information release system. By comparing the results based on automatic earthquake locating system with officially published earthquake catalog from Jan. 1, 2010 to Dec. 31, 2011, we calculated respectively the overall errors of 3 automatic locating systems and plotted interpolated error distribution in China and the whole world, and summarized the results. We also analyzed and discussed the issue of false alarm and missing report for the 3 systems. In general, the present earthquake information auto-release system in China can locate earthquakes with M≥3.0 in the Capital region, M≥4.0 in other areas of China (M≥5.0 in parts of western China where stations are sparse), and M≥7.0 outside China, and the "auto- -results" can be used as reference for formal earthquake information release. The whole system is able to provide technical platform effectively for establishing a 2-step (i.e., auto-formal) earthquake information release system.更多还原