A hydrogeomorphic dataset for characterizing catchment hydrological behavior across the Tibetan Plateau
<p>Hydrologic and geomorphic processes are intricately linked within the Earth system, jointly characterizing terrestrial hydrological behaviors and biogeochemical cycles across diverse temporal and spatial scales. The Tibetan Plateau provides an ideal setting for investigating the interaction...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2024-04-01
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| Series: | Earth System Science Data |
| Online Access: | https://essd.copernicus.org/articles/16/1651/2024/essd-16-1651-2024.pdf |
| _version_ | 1797226219161255936 |
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| author | Y. Guo H. Zheng Y. Yang Y. Sang C. Wen C. Wen |
| author_facet | Y. Guo H. Zheng Y. Yang Y. Sang C. Wen C. Wen |
| author_sort | Y. Guo |
| collection | DOAJ |
| description | <p>Hydrologic and geomorphic processes are intricately linked within the Earth system, jointly characterizing terrestrial hydrological behaviors and biogeochemical cycles across diverse temporal and spatial scales. The Tibetan Plateau provides an ideal setting for investigating the interactions between hydrological and geomorphic processes in a largely pristine natural environment. Nonetheless, the interactions remain largely unknown due to challenging physical conditions and data limitations. This study presents the inaugural version of a hydrogeomorphic dataset encompassing 18 440 catchments across the region. The dataset comprises 18 hydrogeomorphic metrics along with, in particular, the width-function-based instantaneous unit hydrograph (WFIUH) of each catchment. We find that the peak flow of WFIUH is positively related to slope and curvature but negatively related to catchment area, perimeter, length and circularity. The relationships of time to peak with the hydrogeomorphic metrics are similar to those of peak flow but in an oppositive direction. Catchment concentration time shows a positive relationship with catchment size but a strong negative correlation with catchment slope. The validity of the derived WFIUH has been confirmed by its successful integration into an hourly hydrological model for simulating flash-flood events. Uncertainties in the WFIUH can be attributed to the resolution of the digital elevation model (DEM) and the methods employed for calculating flow velocity. The dataset is publicly available via the Zenodo portal: <a href="https://doi.org/10.5281/zenodo.8280786">https://doi.org/10.5281/zenodo.8280786</a> (Guo and Zheng, 2023). It can contribute to advancing our understanding of catchment hydrological behaviors and can provide simple and fast-routing unit hydrograph calculation for ungauged catchments in the Tibetan Plateau and hence improve water resources management and disaster mitigation in the region and its downstream areas.</p> |
| first_indexed | 2024-04-24T14:21:25Z |
| format | Article |
| id | doaj.art-5ae20c80934f4f8e819c4384f07e4746 |
| institution | Directory Open Access Journal |
| issn | 1866-3508 1866-3516 |
| language | English |
| last_indexed | 2024-04-24T14:21:25Z |
| publishDate | 2024-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Science Data |
| spelling | doaj.art-5ae20c80934f4f8e819c4384f07e47462024-04-03T06:29:30ZengCopernicus PublicationsEarth System Science Data1866-35081866-35162024-04-01161651166510.5194/essd-16-1651-2024A hydrogeomorphic dataset for characterizing catchment hydrological behavior across the Tibetan PlateauY. Guo0H. Zheng1Y. Yang2Y. Sang3C. Wen4C. Wen5State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing, 100101, ChinaCSIRO Environment, Canberra, ACT 2601, AustraliaState Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing, 100101, ChinaKey Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, ChinaNYUAD Center for Artificial Intelligence and Robotics, New York University Abu Dhabi, Abu Dhabi, UAENYU Tandon School of Engineering, New York University, New York, USA<p>Hydrologic and geomorphic processes are intricately linked within the Earth system, jointly characterizing terrestrial hydrological behaviors and biogeochemical cycles across diverse temporal and spatial scales. The Tibetan Plateau provides an ideal setting for investigating the interactions between hydrological and geomorphic processes in a largely pristine natural environment. Nonetheless, the interactions remain largely unknown due to challenging physical conditions and data limitations. This study presents the inaugural version of a hydrogeomorphic dataset encompassing 18 440 catchments across the region. The dataset comprises 18 hydrogeomorphic metrics along with, in particular, the width-function-based instantaneous unit hydrograph (WFIUH) of each catchment. We find that the peak flow of WFIUH is positively related to slope and curvature but negatively related to catchment area, perimeter, length and circularity. The relationships of time to peak with the hydrogeomorphic metrics are similar to those of peak flow but in an oppositive direction. Catchment concentration time shows a positive relationship with catchment size but a strong negative correlation with catchment slope. The validity of the derived WFIUH has been confirmed by its successful integration into an hourly hydrological model for simulating flash-flood events. Uncertainties in the WFIUH can be attributed to the resolution of the digital elevation model (DEM) and the methods employed for calculating flow velocity. The dataset is publicly available via the Zenodo portal: <a href="https://doi.org/10.5281/zenodo.8280786">https://doi.org/10.5281/zenodo.8280786</a> (Guo and Zheng, 2023). It can contribute to advancing our understanding of catchment hydrological behaviors and can provide simple and fast-routing unit hydrograph calculation for ungauged catchments in the Tibetan Plateau and hence improve water resources management and disaster mitigation in the region and its downstream areas.</p>https://essd.copernicus.org/articles/16/1651/2024/essd-16-1651-2024.pdf |
| spellingShingle | Y. Guo H. Zheng Y. Yang Y. Sang C. Wen C. Wen A hydrogeomorphic dataset for characterizing catchment hydrological behavior across the Tibetan Plateau Earth System Science Data |
| title | A hydrogeomorphic dataset for characterizing catchment hydrological behavior across the Tibetan Plateau |
| title_full | A hydrogeomorphic dataset for characterizing catchment hydrological behavior across the Tibetan Plateau |
| title_fullStr | A hydrogeomorphic dataset for characterizing catchment hydrological behavior across the Tibetan Plateau |
| title_full_unstemmed | A hydrogeomorphic dataset for characterizing catchment hydrological behavior across the Tibetan Plateau |
| title_short | A hydrogeomorphic dataset for characterizing catchment hydrological behavior across the Tibetan Plateau |
| title_sort | hydrogeomorphic dataset for characterizing catchment hydrological behavior across the tibetan plateau |
| url | https://essd.copernicus.org/articles/16/1651/2024/essd-16-1651-2024.pdf |
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