地震烈度级数可视化图像优化检测仿真

Optimal Inspection for Simulation of Seismic Intensity Visualization

在地震预警和速报应用中需要将地震烈度级数与特定区域内断层地质结构可视化相结合,目前解决上述问题多采用基于Arc GIS的热力图仿真方法。方法存在无法实现特定断层面区域烈度展示,拟合时穿越断层地震烈度信息丢失、导致新插值远离断层,不支持手持终端显示等问题。针对上述问题,通过规则三角剖分已有地图层数据,利用监测仪器直接采集的实时烈度数据为基础,进行权重转换并映射到插值点。同时在插值时引入核密度法和空间自相关分析方法,并扩展权重密度算法,实现基于百度热力图的地震烈度区域仿真及可视化展示方法。通过在实际地震烈度区域速报系统中运用,证明上述方法能满足地震烈度速报网络实际仿真展示要求。

Combining the earthquake intensity visualization with fault information is one of key requirements in earthquake early warning. The existed method for visualization of earthquake intensity is based on ArcGIS, which has the shortcomings of only showing the earthquake intensity in whole map and lack of fault information which causes the new points away from the fault. To overcome abovementioned shortcomings, we use regular triangulation to improve a seismic intensity region visualization method. The data of monitoring equipment were employed to reflect the weight of map. The external algorithm of kernel density estimation, local spatial autocorrelation indices and Baidu heat map were used to realize the seismic intensity regional simulation and visualization. This method was implemented in real seismic intensity early warning system, which can satisfy the requirements of seismic intensity broadcasting system.