基于Sentinel-1号卫星影像的2020年夏季鄱阳湖洪涝灾害洪涝范围数据

鄱阳湖作为中国最大的淡水湖，有五大河流汇入，起着巨大的调蓄作用。2020年7月，受到强降雨影响，鄱阳湖地区发生了严重的洪涝灾害。7月11日21时，江西饶河鄱阳站水位突破1998年历史极值，7月12日7时，鄱阳站水位已超1998年水位0.13米。该数据包含了此次洪涝事件的淹没范围数据。

Poyang Lake, the largest freshwater lake in China, receives inflow from five major tributary rivers and plays a crucial role in flood regulation and storage. In July 2020, severe flooding struck the Poyang Lake basin due to heavy rainfall. At 21:00 on July 11, the water level at Poyang Station of the Raohe River in Jiangxi Province exceeded the historical extreme value recorded in 1998. By 7:00 on July 12, the water level at Poyang Station had surpassed the 1998 peak level by 0.13 meters. This dataset contains the inundation extent data of this flood event.

搜集汇总

背景与挑战

背景概述

该数据集提供了2020年夏季鄱阳湖洪涝灾害的洪涝范围数据，基于Sentinel-1卫星影像生成，空间分辨率为10米。数据通过SAR影像预处理、阈值提取和图像差分等方法获得，覆盖经纬度范围115.627°E~117.102°E和28.272°N~29.869°N，适用于洪涝灾害监测和地理信息系统分析。