1.Guangdong Earthquake Agency, Guangzhou 510070, China;2.Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology , CEA, Guangzhou 510070, China;3.Key Laboratory of Earthquake Early Warning and Safety Diagnosis of Major Project , Guangzhou 510070, China;4.Shenzhen Academy of Disaster Prevention and Reduction , Shenzhen 518003, China
Real-time transmission and aggregation of seismic monitoring data is the basis for realizing the engineering of data collection and processing in seismic observation system, intelligentization in operation and maintenance management and modernization of the seismic monitoring service system in China. The newly upgraded real-time transmission and aggregation system of seismic monitoring data realizes the real-time waveform data streaming service of seismic monitoring data,and has rich adapters for collecting the real-time waveform or trigger data from seismic monitoring stations or data centers. The new system supports fast and slow streaming hybrid transmission,low-latency transmission of early warning data,real-time data streaming intelligent monitoring and redundant hot backup. The new system streaming service client provides real-time data streaming services for service systems such as earthquake early warning, seismic intensity rapid reporting, and seismic waveform data archiving. The new system technically solves the problem of real-time data streaming transmission,collection and sharing from or between large-scale, multi-level, and complex seismic monitoring stations and data centers, and is the key to the realization of informatization and modernization of seismic monitoring career in China.
国内外许多研究人员、机构和系统在地震监测数据实时传输和汇聚问题上开展了一系列重要的基础性和开拓性研究工作[4-14]。美国 ASL (Albuquerque Seismological Laboratory)开发的LISS (Live Internet Seismic Server)是最早的基于UDP/IP协议的实时地震数据传输服务协议。SeedLink是基于TCP/IP协议的实时地震数据传输服务协议,美国地震学联合研究会(IRIS)地震数据管理中心(DMC)和欧洲GEOFON等台网的所有开放实时数据都是通过它来传输共享。德国SeisComp软件的seedlink服务系统实现了SeedLink协议,其通过大约 33 种适配器来传输汇聚地震监测数据。Earthworm系统含有多个模块用于汇集主流数据采集器和其他数据服务中心的实时数据。Antelope系统使用对象环形缓冲ORB(Object Ring Buffer)来进行实时数据传输。JOPENS系统(5.2版本)的实时数据流服务SSS5.2(Seismic Streaming Service)主要基于中国地震局自主开发的NetSeis/IP协议与TCP/IP协议网络来实现实时地震监测数据的传输,其在“十五”项目建设完成后开始应用于我国的地震观测系统。
新系统有约34种仪器适配器,支持国内外主流地震仪器产商的数据采集器,同时为了规范数据采集器产商的产品以及各种数据通信协议,制定了地震行业标准《地震烈度速报与预警台站数据通信协议》,新系统开发的适配器 CSTP(Common Seismic Transport Protocol)实现了该协议,所有支持本协议数据采集器都可以快速接入到SSS系统,并可以根据台站类型和通信条件选择设定连续波形数据传输、触发波形数据传输和触发信息数据传输三种数据传输模式,有效降低地震台站数据传输的复杂程度和数据传输量。对于支持CSTP协议的数据采集器,新系统还可以实时汇集仪器状态信息、台站和仪器参数等数据,实现了监测数据流、监控业务流和监督控制流等多路数据的汇聚。