地震学报2026，Vol.48Issue(2)：374-389,16.DOI:10.11939/jass.20240119
实时智能地震处理系统(RISP)在广东测震台网的应用
Application of Real-time Intelligent Seismic Processing system in Guangdong Seismic Network
摘要
Abstract
The Real-time Intelligent Seismic Processing system(RISP)is a system designed to address the practical demands for earthquake cataloguing in China.It employs the deep learn-ing method to detect earthquakes and integrates functionalities including phase arrival picking,phase association,earthquake location and magnitude measurement.This system can process continuous seismic waveforms and dense earthquake sequences in real time and offline modes.In order to evaluate the practical application effectiveness of the RISP system in Guangdong Seismic Network and facilitate system optimization,this study investigates the detection per-formance of the RISP system for earthquake sequences in three characteristic seismogenic re-gions of Guangdong Province:Heyuan,Yangjiang,and Shantou,based on continuous wave-forms recorded by Guangdong Seismic Network.Through comparative analysis with the manu-al catalog,we systematically assess the RISP system's capabilities across multiple dimensions,such as phase picking accuracy,magnitude distribution,and hypocenter location precision.Furthermore,this paper analyzes three categories of earthquakes recorded by the RISP system:those more frequently detected and those weakly detected,as well as events whose seismic parameters deviate significantly from the manual catalog.The evaluation metrics adopted in the analysis process are the phase detection rate,event matching rate,and event authenticity rate. The analysis results of this paper demonstrate that the RISP system exhibits high detection rates for Pg and Sg phases in Heyuan region,both at approximately 90%.762 earthquakes were detected,which is 3.16 times as much as the number in the manual catalog.Most of the mag-nitudes of the more detected events are ML＜0.Among them,225 earthquakes in the automatic catalog successfully matched those in the manual catalog,with high event matching rates across all magnitude ranges.Whereas the detection rates for Pg and Sg phases in Yangjiang and Shantou regions are relatively low,both below 60%.The RISP system detected 163 and 130 earthquakes in these two regions respectively,with both totals being fewer than the correspond-ing numbers documented in the manual catalog.Most of the magnitudes of the weakly detected events are ML＜1.0.Within the automatic catalog,134 and 103 earthquakes were successfully matched with the manual catalog,respectively.The event matching rates for earthquakes below ML1.0 were low.The more detected events were manually verified,and there were eight false detection events in the automatic catalog,resulting in an event authenticity rate of 99.2%.Compared with the manual catalog,the automatic catalog produced by the RISP system in Heyuan region has smaller deviations in the origin time,epicentral location,focal depth,and magnitude.In contrast,the discrepancies between the automatic and manual catalogs in Yangji-ang and Shantou regions are significantly larger,particularly in terms of epicentral location and focal depth,for which deviations are most pronounced. Additionally,the RISP system displays a tendency to slightly underestimate magnitudes for larger earthquakes and overestimate magnitudes for smaller ones in Yangjiang and Shantou regions.On the whole,the RISP system demonstrates strong performance in Heyuan region and can produce an earthquake catalogue with high completeness and strong consistency.However,its performance is mediocre in Yangjiang and Shantou regions due to limitations in the detec-tion model and associated algorithms,necessitating subsequent optimization and improvement. To accelerate the operational application of the RISP system in Guangdong region and fur-ther enhance the modernization of earthquake monitoring capabilities,this paper proposes recommendations for optimizing and improving the RISP system based on the aforementioned research findings and the practical requirements of earthquake cataloguing in Guangdong.The RISP system should retrain its models using historical seismic waveforms from Guangdong seis-mic network or adopt transfer learning strategies to refine the models,thereby improving the phase detection rate and arrival picking accuracy.Following the completion of the National Earthquake Intensity Rapid Reporting and Early Warning Project,the RISP system must ur-gently enhance functions such as phase arrival picking from acceleration waveform records and earthquake event type discrimination to meet emerging earthquake cataloguing requirements and improve operational efficiency.关键词
RISP/深度学习/自动检测/广东测震台网/地震序列Key words
RISP/deep learning/automatic detection/Guangdong Seismic Network/earth-quake sequence分类
天文与地球科学引用本文复制引用
梁明,蒋策,田平,姜喜姣,林庆西,曾晓燕,潘宇航..实时智能地震处理系统(RISP)在广东测震台网的应用[J].地震学报,2026,48(2):374-389,16.基金项目
广东省省级科技计划项目(2024A1111120016)和广东省地震局青年地震科研基金(重点实验室开放基金)项目(GDDZZ202501,GDDZY202309)联合资助. （2024A1111120016）
