2018 National Tropical Cyclone Hazard Assessment 1%/0.2% Annual Exceedance Probability Maps

Geoscience Australia has produced a National Tropical Cyclone Hazard Assessment (TCHA18). The 1%/0.2% Annual Exceedance Probability Maps provides 0.2-second duration, 10-metre above ground level gust wind speeds across Australia arising from tropical cyclone events over a 2-km grid, for 1% and 0.2% annual exceedance probability (100- and 500-year annual recurrence interval respectively). Surface conditions are assumed to correspond to terrain category 2 conditions as defined in AS/NZS 1170.2 (2011).

澳大利亚地球科学局（Geoscience Australia）已编制完成国家热带气旋灾害评估（National Tropical Cyclone Hazard Assessment, TCHA18）数据集。该数据集包含1%/0.2%年超越概率（Annual Exceedance Probability）地图，其展示了澳大利亚全域基于2公里网格分辨率、由热带气旋事件引发的离地10米高度、持续0.2秒的阵风风速数据；该数据对应1%与0.2%的年超越概率，分别对应100年和500年一遇的年重现期。地表条件假定符合澳大利亚/新西兰联合标准AS/NZS 1170.2（2011）中定义的2类地形条件。