面向台风事件与灾害影响评估的时空数据管理模式

The Spatiotemporal Data Management for Typhoon Events and Disaster Assessment

准确掌握自然灾害致灾因子强度、影响范围以及持续时间等灾害事件与过程信息,是开展区域灾害预警预测、减灾救援以及灾后重建等工作的基础。目前还没有一种通用的时空数据模型,能够对台风等过程性自然灾害事件进行建模。以"201319"号"天兔"台风灾害事件为例,设计了一种基于元组时间标记法的台风灾害事件与过程的多尺度时空数据管理模式,并运用扩展SQL语言,将台风灾害影响区域等灾害事件的过程性信息按不同空间尺度同步存储,为台风灾害事件的历史回溯、数据共享与可视化以及风险区划等提供可靠、高效的过程数据管理方式。

The detailed information including disaster-inducing factors intensity,affected area and its duration of natural disasters are important for the crises management,including early warning,disaster assistance and post-disaster recovery and reconstruction.So far there are no universal spatial-temporal data model for modeling typhoon events and disaster assessment.We propose a multi-scale spatial-temporal data model for typhoon events based on tuple time stamps.The spatial-temporal information including areas affected by typhoon events can be stored in spa-tial database synchronously in extended SQL at different spatial scales based on tuple time stamps.It provides a highly efficient approach for managing procedural data,which can be used for historical review of typhoon events, data sharing and spatial-temporal data visualization.