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[1]XU Ke,GUO Wei,TAN Yipei,et al.Assessment of the Data Processing Systems of the Tianjin Earthquake Early Warning System[J].Journal of Seismological Research,2025,(03):432-439.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0045 ]

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Assessment of the Data Processing Systems of the Tianjin Earthquake Early Warning System

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: Number of periods: 2025 03 Page number: 432-439 Column: Public date: 2025-04-15

Title:: Assessment of the Data Processing Systems of the Tianjin Earthquake Early Warning System

Author(s):: XU Ke; GUO Wei; TAN Yipei; GAO Ye; MA Ting; BAI Yunpeng; (Tianjin Earthquake Agency,Tianjin 300201,China)

Keywords:: early earthquake warning; data processing system; JEEW system; EEW system

CLC:: P315-39

DOI:: 10.20015/j.cnki.ISSN1000-0666.2025.0045

Abstract:: After collecting the data produced by the data processing systems of the Tianjin Earthquake Early Warning System from June 15,2021 to December 31,2023,we compare these data with the data from the official quick reports of the earthquakes in Beijing City,Tianjin City,and Hebei Province from China Earthquake Networks Center in terms of matching rate of earthquake events,timeliness of early warning,deviation of the first-reported magnitude,and deviation of the first-reported epicentral location.We find that as for the first-reported data from JEEW system,time usage lies in 3.8-7.0 seconds,magnitude deviation lies in 0.1-0.7,and epicentral location deviation ranges between 0.6-2.6 km.As for the first-reported data from EEW system,time usage lies in 3.4-7.0 s,magnitude deviation lies in 0.0-0.8,and epicentral location deviation ranges between 0.6-2.6 km.Thus,we conclude that for the 3.0-magnitude earthquakes or above,the Tianjin Earthquake Early Warning System will produce related seismic parameters more efficiently and more accurately.

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Last Update: 2025-04-15