Application of Seismic Automatic Cataloguing Processing System in Heyuan M4.3 Earthquake Sequence in Guangdong in 2023
LIANG Ming
LIU Jun
Hong Yuqing
LIN Qingxi
JIANG Xijiao
TIAN Ping
Abstract：Two sets of seismic automatic cataloguing processing systems developed by the earthquake monitoring technology and software R&D innovation team of Guangdong Earthquake Agency were used to process the continuous waveform data recorded by Guangdong seismic network one day before and seven days after the main earthquake of Heyuan M4.3 earthquake on February 11,2023.Combined with the manual cataloguing results,the automatic detection results of the system during this period were analyzed in detail.The results show that the number of earthquakes automatically detected by system 1 is 2.67 times that of the manual catalog,and the event matching rate is high,while the number of earthquakes automatically detected by system 2 is about half that of the manual catalog,and the matching rate of earthquake events with ML≤1.0 is low.The automatic detection results of the two systems are all seismic events,the real rate of automatic detection events is 100%.The deviation between the automatic catalog and the manual catalog produced by the two systems is small in the earthquake origin time,epicenter location,the focal depth,the arrival time of Pg and Sg phase,and the reliability is high.On the whole,the two systems have the ability of seismic automatic cataloging.In contrast,system 1 has a stronger ability to handle dense aftershocks after a large earthquake and can produce a relatively complete earthquake catalog.
Keywords：Seismic automatic cataloguingDeep learningHeyuan earthquake in Guangdong
Publication Date：2023-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 119-125 )