Floodplains, South America, Nardi et al. 2019

This resource contains a raster map of the South America's floodplains. It was developed by Nardi et al. (2019) and described in a data publication titled "GFPLAIN250m, a global high-resolution dataset
of Earth’s floodplains." Per the publication title, the data source has developed maps for the world; however, only the South America map is included in this resource. It is being used in the Amazon Freshwater Conservation Targets project to delineate the Amazon Basin floodplains.

Abstract from data hosting source (modified): The GFPLAIN250m includes raster data of Earth's floodplains identified using a geomorphic approach presented in Nardi et al. (2006, 2018). The 250m floodplain dataset is derived by processing the NASA SRTM Digital Elevation model gathered from http://srtm.csi.cgiar.org/, and in particular the 250-m SRTM version 4.1 DTM. Files are stored using both the Esri ASCII raster and the GeoTIFF Format and provided as seamless dataset using the World Geodetic System 1984 (WGS84) datum and geographic coordinate system.

Abstract from the manuscript: Identifying floodplain boundaries is of paramount importance for earth, environmental and socioeconomic studies addressing riverine risk and resource management. However, to date, a global floodplain delineation using a homogeneous procedure has not been constructed. In this paper, we present the first, comprehensive, high-resolution, gridded dataset of Earth’s floodplains at 250-m resolution (GFPLAIN250m). We use the Shuttle Radar Topography Mission (SRTM) digital terrain model and set of terrain analysis procedures for geomorphic floodplain delineations. The elevation data are processed by a fast geospatial tool for floodplain mapping available for download at https://github.com/fnardi/GFPLAIN. The GFPLAIN250m dataset can support many applications, including flood hazard mapping, habitat restoration, development studies, and the analysis of human-flood interactions. To test the GFPLAIN250m dataset, we perform a consistency analysis with floodplain delineations derived by flood hazard modelling studies in Europe.

Content Description:
"TIFF" folder contains the raster map files in GeoTIFF format.

"ASCII.zip" folder contains the raster map files in ASCII format. Because of the large file size, the files are zipped.

"Nardi_2019_GlobalFloodplains.pdf" is a PDF the manuscript that describes the data.

本资源收录了南美洲泛滥平原的栅格地图。该地图由Nardi等（2019）开发，并在名为《GFPLAIN250m：地球泛滥平原的全球高分辨率数据集》的数据出版物中进行描述。根据出版物标题，该数据源已为全球开发地图；然而，本资源中仅包含南美洲地图。该地图被应用于亚马逊淡水保护目标项目中，以界定亚马逊盆地的泛滥平原。

数据托管来源的摘要（修改后）：GFPLAIN250m包括利用Nardi等（2006，2018）提出的地貌方法识别的地球泛滥平原的栅格数据。250米泛滥平原数据集是通过处理从http://srtm.csi.cgiar.org/收集的NASA SRTM数字高程模型，特别是250米SRTM版本4.1数字高程模型（DTM）而得。文件以Esri ASCII栅格和GeoTIFF格式存储，并作为无缝数据集提供，使用世界大地测量系统1984年（WGS84）的基准和地理坐标系。

手稿摘要：界定泛滥平原边界对于地球、环境和社会经济研究中的河流风险与资源管理至关重要。然而，迄今为止，尚未构建一个使用统一程序的全球泛滥平原界定。在本研究中，我们首次提出了地球泛滥平原的全面、高分辨率、网格化数据集，分辨率为250米（GFPLAIN250m）。我们使用航天雷达地形任务（SRTM）数字地形模型和一套地貌泛滥平原界定的地形分析程序。通过快速地理空间工具处理高程数据，并可在https://github.com/fnardi/GFPLAIN下载。GFPLAIN250m数据集可支持多种应用，包括洪水灾害制图、栖息地恢复、发展研究和人类-洪水相互作用的分析。为了测试GFPLAIN250m数据集，我们对其与欧洲洪水灾害建模研究得出的泛滥平原界定进行了一致性分析。

内容描述：
"TIFF"文件夹包含GeoTIFF格式的栅格地图文件。
"ASCII.zip"文件夹包含ASCII格式的栅格地图文件。由于文件大小较大，文件已压缩。
"Nardi_2019_GlobalFloodplains.pdf"是描述数据的论文的PDF文件。