Hydrological responses in equatorial watersheds indicated by Principal Components Analysis (PCA) - study case in Atrato River Basin (Colombia)
dc.contributor.author | Betancur, Sebastian Balbin [UNESP] | |
dc.contributor.author | Gastmans, Didier [UNESP] | |
dc.contributor.author | Vasquez, Katherine Vasquez | |
dc.contributor.author | Santarosa, Lucas Vituri [UNESP] | |
dc.contributor.author | Santos, Vinicius dos [UNESP] | |
dc.contributor.author | Kirchheim, Roberto Eduardo | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Universidade de São Paulo (USP) | |
dc.contributor.institution | Serv Geol Brasil | |
dc.date.accessioned | 2021-06-25T12:22:37Z | |
dc.date.available | 2021-06-25T12:22:37Z | |
dc.date.issued | 2020-01-01 | |
dc.description.abstract | The Atrato river basin is located in the Pacific fringe of Colombia, region with one of the highest precipitation rates in the world. The main purpose of this study is to determine the dominant processes in the hydrological responses along 17 sub-basins within the basin using principal component analysis. Watersheds located at the headwater presented a fast or medium response to the precipitation events, while higher flow homogeneity was observed in watersheds located at the lower portions of the basin. Three principal components were responsible for explaining 85.18% of the total variance. The component PC1 revealed the largest contributions for low flow behavior, being associated to precipitation, characteristic discharge values, compactness index, soil coverage and soil coarse textures. The component PC2 was assigned to the geological variables, fine and average texture soil and the average basin slope. Finally, the component PC3 has shown to be related to high flow patterns (maximum characteristic discharge values Q(5) and Q(1)), igneous rocks and length of the basin. Highest specific discharge was associated to alluvial deposits and forest cover, whereas the slope was considered determinant for the run-off generation. | en |
dc.description.affiliation | Univ Estadual Paulista, Ctr Estudos Ambientais, Rio Claro, SP, Brazil | |
dc.description.affiliation | Univ Sao Paulo, Lab Hidrol Florestal, Piracicaba, SP, Brazil | |
dc.description.affiliation | Serv Geol Brasil, Sao Paulo, SP, Brazil | |
dc.description.affiliationUnesp | Univ Estadual Paulista, Ctr Estudos Ambientais, Rio Claro, SP, Brazil | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.description.sponsorshipId | FAPESP: 2018/06666-4 | |
dc.format.extent | 12 | |
dc.identifier | http://dx.doi.org/10.1590/2318-0331.252020190165 | |
dc.identifier.citation | Rbrh-revista Brasileira De Recursos Hidricos. Porte Alegre: Assoc Brasileira Recursos Hidricos-abrh, v. 25, 12 p., 2020. | |
dc.identifier.doi | 10.1590/2318-0331.252020190165 | |
dc.identifier.file | S2318-03312020000100241.pdf | |
dc.identifier.issn | 1414-381X | |
dc.identifier.scielo | S2318-03312020000100241 | |
dc.identifier.uri | http://hdl.handle.net/11449/209569 | |
dc.identifier.wos | WOS:000580447000001 | |
dc.language.iso | eng | |
dc.publisher | Assoc Brasileira Recursos Hidricos-abrh | |
dc.relation.ispartof | Rbrh-revista Brasileira De Recursos Hidricos | |
dc.rights.accessRights | Acesso aberto | |
dc.source | Web of Science | |
dc.subject | Atrato river basin | |
dc.subject | Flow duration curves | |
dc.subject | Principal component analysis | |
dc.subject | Colombia | |
dc.title | Hydrological responses in equatorial watersheds indicated by Principal Components Analysis (PCA) - study case in Atrato River Basin (Colombia) | en |
dc.type | Artigo | |
dcterms.rightsHolder | Assoc Brasileira Recursos Hidricos-abrh | |
unesp.author.orcid | 0000-0002-1340-3373[2] | |
unesp.author.orcid | 0000-0001-7180-7715[4] |
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