基于GF-3号卫星雷达影像的2021年7月河南省新乡市暴雨洪涝灾害洪水淹没空间分布数据集

2021年7月下旬，河南省遭受历史罕见特大暴雨，全省平均过程降雨量达223毫米，多条河流发生超警以上洪水，郑州、新乡、鹤壁等多地遭受特大暴雨洪涝灾害，受灾范围广、灾害损失重、社会关注度高。本数据集基于新乡市7月22日洪涝灾害应急监测，以GF-3雷达遥感数据为依据，获取新乡市暴雨洪涝灾害洪水淹没空间分布数据集，为此次暴雨洪涝灾害的防灾减灾工作提供科学支撑和理论依据。

In late July 2021, Henan Province was hit by an extremely rare extreme rainstorm in history. The average cumulative rainfall across the province during this rainfall event reached 223 mm, and floods exceeding the warning level occurred in multiple rivers. Severe rainstorm and flood disasters struck many regions including Zhengzhou, Xinxiang and Hebi, with wide affected areas, heavy disaster losses and high social attention. This dataset is developed based on the emergency monitoring of the flood disaster in Xinxiang on July 22, 2021, taking GF-3 radar remote sensing data as the data source to obtain the spatial distribution dataset of flood inundation in Xinxiang during this rainstorm disaster, providing scientific and theoretical support for the disaster prevention and mitigation work of this rainstorm and 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2021年7月22日河南省新乡市暴雨洪涝灾害的洪水淹没空间分布图，分辨率为10米，属于栅格数据类型。它通过雷达遥感技术和水指数计算，提供了精确的淹没范围信息，旨在支持灾害防灾减灾的科学研究和应急响应。数据集由中国水利水电科学研究院团队制作，采用严格的预处理和后处理流程，确保了数据质量。