预警台站数据连续率是地震预警工作的关键性能指标,直接决定了地震预警结果的产出速度和质量。为厘清北京地震台预警台站数据连续率状况,选取2023年12月1日到2024年2月29日北京地震台199个预警台站的连续记录,从数据断记次数和断记时长方面进行统计分析,并对断记现象严重的台站进行重点剖析。分析结果表明:约5.5%的预警台站,数据断记现象严重,且断记特征不尽相同;在6种设备中,3种观测设备未出现严重断记现象;部分3G/4G无线台站,其数据连续性相较于部分光纤台站更为稳定。
The continuity of data from early warning stations is a key performance indicator for earthquake warning work, which directly determines the speed and quality of the output of earthquake warning results. To clarify the continuity status of data from the early warning stations of Beijing Earthquake Station, continuous records from 199 early warning stations of Beijing Earthquake Station from December 1, 2023 to February 29, 2024 were selected for statistical analysis from the perspectives of data interruption frequency and duration, with a focus on analyzing stations with severe interruption phenomena. The analysis results show that about 5.5% of early warning stations have serious data interruption phenomena, and the characteristics of interruption are not the same. Among 6 types of devices, 3 types of observation devices did not show serious data interruption phenomenon. Some 3G/4G wireless stations have more stable data continuity compared to some fiber optic stations.
2025,46(2): 73-81 收稿日期:2024-9-5
DOI:10.3969/j.issn.1003-3246.2025.02.008
基金项目:北京市自然科学基金(项目编号:8232053);国家自然科学基金(项目编号:41604045)
作者简介:赵桂儒(1983—),男,高级工程师,主要从事地震数据处理和预警研究等工作。E-mail:116766621@qq.com
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