基于GF-3号卫星雷达影像的2020年7月20日鄱阳湖流域性洪水最大流域面积空间分布数据集

2020年7月，受长江上游来水及江西省境内大面积致灾暴雨影响，鄱阳湖流域的平均水位不断升高，至7月6日2时，鄱阳湖湖口水文站水位涨至警戒水位19.50米，达到洪水编号标准，“鄱阳湖2020年第一号洪水”形成。本数据集基于鄱阳湖2020年洪水的长时序监测，获取7月20日1998年历史以来鄱阳湖最大流域面积空间分布数据集，为此次流域性洪水的防灾减灾工作提供科学支撑和理论依据。

In July 2020, driven by the inflow from the upper reaches of the Yangtze River and widespread catastrophic rainfall in Jiangxi Province, the average water level of the Poyang Lake Basin rose continuously. At 2:00 on July 6, the water level at the Hukou Hydrological Station of Poyang Lake hit 19.50 meters, the flood warning level, which met the flood numbering criteria, and the "2020 No. 1 Flood of Poyang Lake" was subsequently formed. This dataset is developed based on long-time-series monitoring of the 2020 flood event in Poyang Lake. On July 20, 2020, the spatial distribution dataset of the maximum basin area of Poyang Lake since 1998 was obtained. This dataset provides scientific support and theoretical foundations for flood prevention and disaster mitigation efforts for this basin-wide flood event.

搜集汇总

背景与挑战

背景概述

该数据集基于GF-3卫星雷达影像，生成了2020年7月20日鄱阳湖流域性洪水的最大流域面积空间分布图，分辨率为10米，旨在记录1998年以来该区域的最大洪水范围，为防洪减灾提供科学依据。数据集通过严格的遥感预处理和水体提取技术，确保了数据的准确性，并应用于灾害监测和评估领域。