Building a large dam: identifying the relationship between catchment area and slope using the confidence ellipse approach
Abstract With the population projections indicating continued growth during this century, construction of large dams can be considered as one of the best available options to meet the future increases in water, food, and energy demands. While there are reports that thousands of large dams will be bu...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-01-01
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| Series: | Geoscience Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40562-022-00260-9 |
| _version_ | 1797952482809217024 |
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| author | Suning Liu Ji Chen Jiaye Li Tiejian Li Haiyun Shi Bellie Sivakumar |
| author_facet | Suning Liu Ji Chen Jiaye Li Tiejian Li Haiyun Shi Bellie Sivakumar |
| author_sort | Suning Liu |
| collection | DOAJ |
| description | Abstract With the population projections indicating continued growth during this century, construction of large dams can be considered as one of the best available options to meet the future increases in water, food, and energy demands. While there are reports that thousands of large dams will be built in the near future, a key question is: what are the appropriate conditions for selecting the sites for these dams? The site of a large dam should be carefully evaluated based on many factors, such as socioeconomic development, water resources availability, topographic characteristics, and environmental impacts. This study aims to partly address the above question through identifying the relationship between two topographic characteristics (i.e., catchment area and slope) of a river reach to build a large dam based on the 30-m-resolution global drainage networks. The information about 2815 existing large dams from the Global Reservoir and Dam (GRanD) database is collected for analysis. The confidence ellipse approach is introduced to establish the quantitative relationship between these two variables, which is then used to evaluate the site selection of a large dam from the perspective of topographic characteristics. The results show that: (1) each large dam can well correspond to the nearest river reach in the global drainage networks and (2) the logarithmic values of catchment area and slope can be well described by a confidence ellipse, which is obtained based on the means, standard deviations, and Pearson correlation coefficients of the two variables. The outcomes of this study will be of great value for policymakers to have a more comprehensive understanding of large dam development in future. |
| first_indexed | 2024-04-10T22:47:03Z |
| format | Article |
| id | doaj.art-66aaeb6885b240fabef3d41cca08cfbd |
| institution | Directory Open Access Journal |
| issn | 2196-4092 |
| language | English |
| last_indexed | 2024-04-10T22:47:03Z |
| publishDate | 2023-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Geoscience Letters |
| spelling | doaj.art-66aaeb6885b240fabef3d41cca08cfbd2023-01-15T12:13:44ZengSpringerOpenGeoscience Letters2196-40922023-01-011011910.1186/s40562-022-00260-9Building a large dam: identifying the relationship between catchment area and slope using the confidence ellipse approachSuning Liu0Ji Chen1Jiaye Li2Tiejian Li3Haiyun Shi4Bellie Sivakumar5Center for Climate Physics, Institute for Basic ScienceDepartment of Civil Engineering, The University of Hong KongSchool of Environment and Civil Engineering, Dongguan University of TechnologyDepartment of Hydraulic Engineering, Tsinghua UniversityShenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks, School of Environmental Science and Engineering, Southern University of Science and TechnologyDepartment of Hydraulic Engineering, Tsinghua UniversityAbstract With the population projections indicating continued growth during this century, construction of large dams can be considered as one of the best available options to meet the future increases in water, food, and energy demands. While there are reports that thousands of large dams will be built in the near future, a key question is: what are the appropriate conditions for selecting the sites for these dams? The site of a large dam should be carefully evaluated based on many factors, such as socioeconomic development, water resources availability, topographic characteristics, and environmental impacts. This study aims to partly address the above question through identifying the relationship between two topographic characteristics (i.e., catchment area and slope) of a river reach to build a large dam based on the 30-m-resolution global drainage networks. The information about 2815 existing large dams from the Global Reservoir and Dam (GRanD) database is collected for analysis. The confidence ellipse approach is introduced to establish the quantitative relationship between these two variables, which is then used to evaluate the site selection of a large dam from the perspective of topographic characteristics. The results show that: (1) each large dam can well correspond to the nearest river reach in the global drainage networks and (2) the logarithmic values of catchment area and slope can be well described by a confidence ellipse, which is obtained based on the means, standard deviations, and Pearson correlation coefficients of the two variables. The outcomes of this study will be of great value for policymakers to have a more comprehensive understanding of large dam development in future.https://doi.org/10.1186/s40562-022-00260-9Large damsTopographic characteristicsGlobal drainage networksConfidence ellipse |
| spellingShingle | Suning Liu Ji Chen Jiaye Li Tiejian Li Haiyun Shi Bellie Sivakumar Building a large dam: identifying the relationship between catchment area and slope using the confidence ellipse approach Geoscience Letters Large dams Topographic characteristics Global drainage networks Confidence ellipse |
| title | Building a large dam: identifying the relationship between catchment area and slope using the confidence ellipse approach |
| title_full | Building a large dam: identifying the relationship between catchment area and slope using the confidence ellipse approach |
| title_fullStr | Building a large dam: identifying the relationship between catchment area and slope using the confidence ellipse approach |
| title_full_unstemmed | Building a large dam: identifying the relationship between catchment area and slope using the confidence ellipse approach |
| title_short | Building a large dam: identifying the relationship between catchment area and slope using the confidence ellipse approach |
| title_sort | building a large dam identifying the relationship between catchment area and slope using the confidence ellipse approach |
| topic | Large dams Topographic characteristics Global drainage networks Confidence ellipse |
| url | https://doi.org/10.1186/s40562-022-00260-9 |
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