摘要
结合森林雷击火预报难点问题,阐述了在闪电发生前预警雷电的电场原理。在大兴安岭地区成功探测和跟踪了雷电发展过程,收集了雷暴生命周期各个阶段的数据,获取了闪电发生前雷雨云中电荷积累过程中的电场特征信息。在此基础上,初步探讨了对雷暴过程实时监测和闪电特征识别方法。针对雷电孕育、发展过程的各个阶段,建立分时段、多情景的动态监测模式。面向雷击火演变过程的时序化,提出了雷暴出现、发展、闪电形成临界条件的阶段化预警模式,实现对雷暴全过程跟踪监测。提供了雷暴活动的区域、移动路线,可能出现雷击火点的分布和位置等防火信息,以便防火部门提前做好准备、及时扑救。
Considering the difficulty in forecasting lightening-caused forest fires, the electric field principle pre-alarmed lightening prior to lightening happening is stated. The lightening development course in Daxing＇ anling of the area is successfully detected and tracked, the data related to each stage of lightening life cycle is collected and the electric field feature information in the electrical charge accumulating process in the lightening storm cloud prior to lightening happening is obtained, based on which the real-time monitoring of the lightening storm process and lightening feature recognition methods are discussed initially. In view of the each stage of the lightening formation and development process, an individual time stage and multi-situation dynamic monitoring mode is established. According to the time series feature of the lightening fire evolution process, a staged pre-alarm mode from lightening storm occurrence, development to critical conditions of lightenirig formation is presented to realize the monitoring and track of the whole process of a lightening storm, which can provide fire prevention information such as the area of lightening activity area, movement route and the distribution and location of lightening fire points so that a fire fighting brigade can make preparations in advance and put out the fire promptly.
出处
《林业机械与木工设备》
2010年第4期11-16,共6页
Forestry Machinery & Woodworking Equipment
基金
国家林业局948项目(2005-4-21)
关键词
雷雨云
大气电场
雷电监测
预警
thunder storm cloud
atmospheric electric field
lightening monitoring
pre-alarm possible
