Surface Water Flood Maps (FRM_FH_SURFACE_WATER_EXTENT_H)
收藏资源简介:
The following probabilities are available for surface water flooding: - High - 10 year return period - Medium - 200 year return period - Low - 200 year return period plus climate change using the UKCP09 high emissions scenario for the 2080s.The surface water 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.
本次可获取的地表洪水概率等级如下: - 高概率等级:对应重现期为10年的洪水事件 - 中概率等级:对应重现期为200年的洪水事件 - 低概率等级:基于2080年代英国2009年气候预测(UKCP09)高排放情景下的气候变化影响修正的重现期200年洪水事件。 地表洪水危险性地图可展示以下内容(若有可用数据): - 淹没范围 - 淹没水深 - 适宜场景下的洪水流速。 本次采用的气候变化情景,基于英国2009年气候预测(UKCP09)针对2080年高排放情景的95%分位数预测结果制定。 本次选取中、低概率洪水事件,是为了与苏格兰规划政策(Scottish Planning Policy)中采用的重现期标准保持一致;而高概率洪水事件的选取,则是为了反映近数十年来实际观测到的洪水事件特征。



