River Flood Maps (FRM_FH_RIVER_EXTENT_M)
收藏资源简介:
The following probabilities are available for river flooding: - High - 10 year return period - Medium - 200 year return period - Low - 1000 year return period and 200 year return period plus climate change using the UKCP09 high emissions scenario for the 2080s.The river hazard maps show (where available): - Flood extent - Flood depth - Flood velocities where appropriate. The climate change scenario has been defined by United Kingdom Climate Projection 2009 (UKCP09) predictions for 2080 high emissions 95%ile predictions. Medium and low probability flood events were selected for consistency with return periods used in Scottish Planning Policy, whereas the high probability was chosen as it is reflective of observed events experienced over the last few decades.
本数据集涵盖以下河道洪水概率分级: - 高概率洪水:10年一遇重现期 - 中概率洪水:200年一遇重现期 - 低概率洪水:1000年一遇重现期,以及基于英国气候预测2009(UKCP09)高排放情景、针对2080年代的气候变化影响修正后的200年一遇重现期洪水 该河道灾害图谱可展示以下内容(数据可用时): - 洪水淹没范围 - 洪水水深 - 适宜场景下的洪水流速 上述气候变化情景基于英国气候预测2009(UKCP09)针对2080年高排放情景下的95%分位数预测结果设定。 本次数据集选取中、低概率洪水事件,以匹配苏格兰规划政策中采用的重现期标准;高概率洪水事件的选取则契合近数十年间实际观测到的洪水事件特征。



