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DatasetBasin90m, a new global drainage basin dataset
Cite as:
He, Chuanqi; Yang, Ci-Jian; Turowski, Jens Martin; Ott, Richard F.; Braun, Jean; Tang, Hui; Ghantous, Shadi; Yuan, Xiaoping; Stucky de Quay, Gaia (2023): Basin90m, a new global drainage basin dataset. V. 1.1. GFZ Data Services. https://doi.org/10.5880/GFZ.4.6.2023.004Status
I N R E V I E W : He, Chuanqi; Yang, Ci-Jian; Turowski, Jens Martin; Ott, Richard F.; Braun, Jean; Tang, Hui; Ghantous, Shadi; Yuan, Xiaoping; Stucky de Quay, Gaia (2023): Basin90m, a new global drainage basin dataset. V. 1.1. GFZ Data Services. https://doi.org/10.5880/GFZ.4.6.2023.004
Abstract
The current global dataset of drainage system shapes has a relatively low spatial resolution. We obtained a new dataset (Basin90m) by calculating the drainage basins larger than 50 km2 globally using a 90-meter resolution Digital Elevation Model (DEM). The total number of drainage basins is 667629. For each drainage basin, we extracted the spatial distribution of the longest river channel and the sinuosity of the river. We computed fundamental geometric parameters for the drainage basins, such as area, length, width, aspect ratio, slope, and elevation. Basin90m consists of vector files (ESRI Shapefile format) containing global drainage basins and river channels. The file sizes for the basin and river data are 7.8 and 2.5 GB, respectively. All calculations were automated using a MATLAB script. For a more detailed description of Basin90m, please refer to our submitted data description article titled "A global dataset of the shape of drainage systems". The Basin90m dataset includes data in four sections. The first section comprises drainage basins globally with an area larger than 50 km². The data format is ESRI Shapefile. Eight morphometric indi-ces of the drainage system are stored in the attribute table of the basin shapefile. The "Basins" folder contains six subfolders, each representing a continent. Each continent's subfolder contains all the basins in that continent, categorized by different stream orders. For instance, the "South America" subfolder contains nine shapefile files corresponding to stream orders 1-9. The names of the shapefile files include their continent and stream order information. For example, "South_America_Basin_8.shp" represents all basins in South America with a stream order of 8. The second part of the Basin90m data consists of global main river channels. The longest river channel of each basin is stored in a folder named "Rivers". The internal structure of this folder is the same as the "Basins" folder. For instance, "South_America_River_8.shp" represents the main river channels in South America with a stream order of 8. The third part of Basin90m data is an Excel file named "Basin90m". This file contains eight morphometric parameters for all the basins. It includes both a globally merged sheet and sheets distinguishing different stream orders. The fourth part of Ba-sin90m data is a folder named "Matlab_code", which contains Matlab code for the automated ex-traction of drainage systems and their morphometric parameters.
Additional Information
Version history:12 January 2024: Publication of version 1.0
6 March 2024: Publication of version 1.1
Changes: Provision of more detailed user guidance in the file: User guide for Basin90m.m and additional comments to the matlab code (new file: 2022-004_He-et-al_Matlab_code_v.1.1.zip). The first version of this zip file was moved to the "previous-versions" folder.
Authors
- He, Chuanqi
;GFZ German Research Centre for Geosciences, Potsdam, Germany;Department of Earth, Atmospheric & Planetary Sciences, Massachusetts Institute of Technology, Cambridge, US - Yang, Ci-Jian;Department of Geography, National Taiwan University, Taipei, Taiwan;GFZ German Research Centre for Geosciences, Potsdam, Germany
- Turowski, Jens Martin;GFZ German Research Centre for Geosciences, Potsdam, Germany
- Ott, Richard F.;GFZ German Research Centre for Geosciences, Potsdam, Germany;Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- Braun, Jean;GFZ German Research Centre for Geosciences, Potsdam, Germany
- Tang, Hui;GFZ German Research Centre for Geosciences, Potsdam, Germany
- Ghantous, Shadi;Institute of Environmental Science and Geography, University of Potsdam, Potsdam, Germany
- Yuan, Xiaoping;School of Earth Sciences, China University of Geosciences, Wuhan, China;GFZ German Research Centre for Geosciences, Potsdam, Germany
- Stucky de Quay, Gaia;Department of Earth, Atmospheric & Planetary Sciences, Massachusetts Institute of Technology, Cambridge, US
Contact
- He, Chuanqi; GFZ German Research Centre for Geosciences, Potsdam, Germany;
Keywords
GCMD Science Keywords
- EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND COVER
- EARTH SCIENCE > LAND SURFACE > LANDSCAPE > LANDSCAPE ECOLOGY
- EARTH SCIENCE > LAND SURFACE > LANDSCAPE > LANDSCAPE PROCESSES
- EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
- EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TOPOGRAPHICAL RELIEF
- EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > FLUVIAL LANDFORMS
- EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > FLUVIAL PROCESSES
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