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地震发生后处于不同地震烈度区域的地物受灾程度不同。快速准确地获取地震影响或波及范围内地震烈度空间分布,是震后应急救援的重要依据和主要参数。依托云计算技术,以云服务方式构建地震烈度速报系统,提供可扩展、可配置、开放透明的地震影响场分析应用服务,将是我国烈度速报系统研究开发与应用中的一项新技术和发展趋势。本文依托研究小组自主研发的地理知识云服务系统GeoKSCloud,以福建省为研究区域,在提出适用于福建省地震烈度衰减关系与地震动峰值加速度场地校正方法的基础上,开展了地震影响场分析云服务系统的设计与实现工作,分析了地震影响场分析云服务的运行机制和服务组合工作流;实现了地震烈度衰减关系计算方法、场地放大因子校正方法、网格点场地类别属性获取、网格点沿地震衰减长短轴方向的坐标变换等相关原子服务的云服务封装,以及支撑数据云存储、网络地理信息系统的云服务门户的开发与集成;最后,以1604年发生在泉州近海7.5级大地震为震例,在云服务门户进行了全省范围内所有等间距网格点地震峰值加速度(基岩PGA和地表PGA)的计算、插值,并进行计算结果与实际调查数据的对比分析。结果表明,因充分考虑了具体场地的放大效应,构建的地震影响场分析云服务,不仅较传统单凭地震烈度衰减关系确定地震动峰值加速度方法更加精细化,而且提供的服务与传统的网络服务相比具有可扩展、可配置、开放透明等明显优势,可为我国烈度速报系统研究与应用提供一个共性技术与支撑服务平台,创新地震烈度速报的运营模式。
After the earthquake occurred in different areas of seismic intensity of the impact of different degrees. To obtain the spatial distribution of the earthquake intensity or the seismic intensity within the range rapidly and accurately is an important basis and the main parameter for post-earthquake emergency rescue. Relying on cloud computing technology, constructing earthquake intensity quick report system by cloud service and providing extensible, configurable and open and transparent seismic influence field analysis application service will be a new technology in research and development and application of China’s intensity quick report system And development trend. This paper, based on GeoKSCloud, a geo-knowledge cloud service system independently developed by the research team, takes Fujian Province as a research area. On the basis of the method of field attenuation for seismic intensity attenuation and peak acceleration of earthquakes in Fujian Province, Service system design and implementation, analyzes the operation mechanism and service composition workflow of cloud service of earthquake influence field analysis, realizes the method of seismic intensity attenuation, the method of site amplification factor correction, the acquisition of grid point field attribute, Point cloud service encapsulation along with the atomic transformation such as coordinate transformation of the long axis and short axis of earthquake attenuation and the development and integration of the cloud service portal that supports data cloud storage and network geographic information system. Finally, taking the 1604 occurence in Quanzhou offshore 7.5 large The earthquakes are the earthquake cases, and the peak acceleration (bedrock PGA and PGA) of all the equidistant grid points across the province are calculated and interpolated at the cloud service portal. The comparative analysis between the calculated results and the actual survey data is carried out. The results show that the earthquake-affected field analysis cloud service is not only more precise than the traditional method of decaying the seismic intensity but also provides the service and the traditional network service because of fully considering the amplification effect of the specific site. Compared with the obvious advantages of scalability, configurability and openness and transparency, it provides a common technology and support service platform for the research and application of China’s intensity reporting system and innovates the operation mode of seismic intensity report.