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通过对中国南海潜在海啸事件进行有效地建模和可视化仿真,模拟多种海啸发生、传播、淹没过程,并统计海啸淹没的概率、程度和范围等信息。利用GIS分析和图像处理技术对研究区域的建筑物/重要设施的位置和功能类型等信息进行提取和分类,再进行有效的人口分布建模和人员响应能力的易损性估计,结合地理环境信息和历史灾害记录,采用改进的风险评估方法,不仅考虑遭受海嘀袭击概率,还考虑了淹没速度,深度及人口密度和疏散时间等因素,基于决策树分类判别方法生成海啸风险图,帮助找出易受灾的危险区进行早期预警,辅助灾害管理和防灾减灾预案的制定。
Through effective modeling and visual simulation of potential tsunami events in the South China Sea, a variety of tsunami occurrences, propagation and inundation processes are simulated, and the probability, extent and range of tsunami submergences are simulated. Use GIS analysis and image processing technology to extract and classify information such as the location and function type of buildings / important facilities in the study area, and then conduct effective population distribution modeling and vulnerability assessment of personnel response ability. Combining with the geographic information And historical disaster records, using an improved risk assessment method, not only considering the probability of being attacked by a sea tick, but also taking into account factors such as submergence speed, depth, population density and evacuation time, and generating tsunami risk maps based on decision tree classification and discrimination methods to help identify Hazardous areas prone to early warning, ancillary disaster management and disaster preparedness plan.