Data · dataset · 2025
A Chinese Mainland River Network Dataset For Hydrodynamic Simulations
Listed in ScienceDB
River network data in Chinese Mainland and surrounding regions include the following supporting data: 1. merit_hydro_dir.geotiff: MERIT Hydro flow direction data.
Description
The data is chopped from MERIT Hydro global data, and the flow direction outside Chinese Mainland and surrounding areas is set to 0. 2. merit_hydro_upa.geotiff: MERIT Hydro drainage area data. This data is chopped from MERIT Hydro global data, and the flow direction outside Chinese Mainland and surrounding areas is set to nan. 3 drainage_density.geotiff: Drainage density data.
Bilinearly interpolated from the "a dataset of 1km grid drainage density in China 2022" (doi.org/10.57760/sciencedb.16001) to a 90 meter MERIT Hydro grid. For regions outside the study domain, the drainage density is calculated from a river network delineated from MERIT-Hydro data with a drainage area threshold of 10 km2(river_network_10km2.gpkg). 4 upstream_length.geotiff: Upstream accumulation length.
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Derived from drainage_density.geotiff and meridi-hydro-dir.geotiff, the calculation method can be found in the reference. 5 river_network_10km2.gpkg.gz: River network data of Chinese Mainland and surrounding regions. This data is extracted using a 10 km2 threshold based on merit_hydro_dir.geotiff and merit_hydro_upa.geotiff.6 river_network_varden.gpkg.gz: A Chinese Mainland River Network Dataset For Hydrodynamic Simulations.
This data was extracted using a drainage density-preserving river network delineation algorithm. The input data are merit_hydro_dir.geotiff, merit_hydro_upa.geotiff and upstream_length.geotiff, with a threshold of 0.5 km2 for drainage area and 0.5 km for river segment length. Please refer to the reference for the delineation algorithm. 7 river_nework_10km2_1km.gpkg.gz: the same as river_network_10km2.gpkg.gz, except that all the river segments have length of approximately 1 km.
The dataset is suitable for hydrodynamic simulations.8 river_network_varden_1km.gpkg.gz: the same as river_network_varden.gpkg.gz, except that all the river segments have length of approximately 1 km. The dataset is suitable for hydrodynamic simulations.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.23487 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
- Inferred from text
- Hydrology 69%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.23487 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].anzsrc:group:3707 | enrichment · scidb cn | taxonomy-embedding@1.0.0 | title+keywords+description (69%) |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/rights |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |