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2013年4月20日8时02分,四川省雅安市芦山县发生了7.0级地震,震中位于30.3°N,103.0°E,震源深度13 km。基于最新的四川省公里格网地震应急基础数据库,结合中国地震局地球物理研究所震后第2天提供的地震动预测图ShakeMap,对芦山7.0级地震的直接经济损失进行了快速评估。给出了不同破坏等级的建筑物面积分布图和直接经济损失分布图,并计算了地震动图6度区以上范围内受灾人口、各破坏等级建筑物破坏面积和损失情况,取得了良好的效果。建议建立全国基于公里格网的地震应急基础数据库,并在今后的地震应急工作中推广使用这一震害损失快速评估方法。
At 08:02 on April 20, 2013, a magnitude 7.0 earthquake hit Lushan County, Ya’an City, Sichuan Province. The epicenter was located at 30.3 ° N and 103.0 ° E with a focal depth of 13 km. Based on the latest earthquake emergency database of kilometer grid in Sichuan Province and the ShakeMap, which is provided on the second day after Earthquake Research Institute of Earthquake Administration of China Earthquake Administration, the direct economic loss of the Lushan MS 7.0 earthquake was evaluated. The distribution charts of building area and direct economic loss with different damage levels are given, and the damage area and loss of the affected population within the scope of 6 degrees above the earthquake area and the damaged buildings of each grade are calculated, and good results are obtained . It is suggested to set up a national earthquake emergency database based on the grid of kilometer grids and to popularize and use this quick assessment method of earthquake damage loss in future earthquake emergency work.