国家数字地震台网中心实时处理及大地震速报软件系统
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摘要
国家数字地震台网中心实时系统是国家数字地震台网的重要组成部分。其软件系统主要功能有 :实时收集、存储 47个国家数字地震台的地动波形数据 ,进行地震事件实时检测、自动定位、报警、人机结合精确定位。可速报国内 MS≥ 5 .0、邻区 MS≥ 6 .0、世界范围 MS≥ 7.0地震的震源位置及震级。软件系统的主要特点 :双机热备份 ,使用多种编程技术 ,具有实时性好、可靠性、稳定性高。提出地震定位计算法的几何背景 ,双曲线与圆相交地震定位法等。丰富和发展了地震定位理论 ,解决了初始定位长期得不到解决的问题 ,在全球大地震速报工作中取得了很好的效果。人机交互系统 ,操作简便 ,用图形和数字给出丰富的信息 ,有助于分析地震波形和地震定位结果 ,是一个计算机辅助思维、分析系统。
The real-time processing system of NCDSN (National Center of Digital Seismic Network) is an important component part of NDSN. The main functions of the software system are: real-time collection and storage of seismic wave data of the 47 national digital seismic stations, real-time detection of seismic events, automatic earthquake location, earthquake alarm, and man-machine interactive precision earthquake location. The system is capable of rapidly determining the epicenter and magnitude of earthquakes, which are M S≥5.0, M S≥ 6.0 , and M S≥7.0 for domestic, neighboring and world-wide ones respectively. The main features of the system are as follows: the system is a hot standby one. It has a good real-time ability, high reliability, stability and availability, owing to using very good programming technologies. Some new methods of earthquake location are adopted, such as geometric pattern of analytical method of earthquake location, method of earthquake location of intersect of circles and hyperbolas. Manifold methods of earthquake location are generalized to a unified approach, which develops the theory of earthquake location. The methods is used in the program of earthquake location, good results are obtained. The operation of man-machine interactive system is easy to use. The information of the seismic graphics and data is abundant, which is conductive to analyze seismic waveform and determine epicenter parameters. The system is a good computer aided thought and analysis one.
The real-time processing system of NCDSN (National Center of Digital Seismic Network) is an important component part of NDSN. The main functions of the software system are: real-time collection and storage of seismic wave data of the 47 national digital seismic stations, real-time detection of seismic events, automatic earthquake location, earthquake alarm, and man-machine interactive precision earthquake location. The system is capable of rapidly determining the epicenter and magnitude of earthquakes, which are M S≥5.0, M S≥ 6.0 , and M S≥7.0 for domestic, neighboring and world-wide ones respectively. The main features of the system are as follows: the system is a hot standby one. It has a good real-time ability, high reliability, stability and availability, owing to using very good programming technologies. Some new methods of earthquake location are adopted, such as geometric pattern of analytical method of earthquake location, method of earthquake location of intersect of circles and hyperbolas. Manifold methods of earthquake location are generalized to a unified approach, which develops the theory of earthquake location. The methods is used in the program of earthquake location, good results are obtained. The operation of man-machine interactive system is easy to use. The information of the seismic graphics and data is abundant, which is conductive to analyze seismic waveform and determine epicenter parameters. The system is a good computer aided thought and analysis one.
引文
[1] 中国科学院地球物理研究所.地震学基础[M].北京:科学出版社,1976.
[2] 国家地震局科技监测司.地震观测技术[M].北京:地震出版社,1995.
[3] 严景平.精密检测技术[M].南京:东南大学出版社,1992.
[2] 国家地震局科技监测司.地震观测技术[M].北京:地震出版社,1995.
[3] 严景平.精密检测技术[M].南京:东南大学出版社,1992.
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