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Spatial and temporal dynamic of the trophic state in a large Amazonian hydroelectric reservoir

dc.contributor.authorCurtarelli, M. P.
dc.contributor.authorOgashawara, I.
dc.contributor.authorAlcantara, E. H. [UNESP]
dc.contributor.authorLorenzzetti, J. A.
dc.contributor.authorStech, J. L.
dc.contributor.institutionNational Institute for Space Research, Remote Sensing Division
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-29T07:21:48Z
dc.date.available2022-04-29T07:21:48Z
dc.date.issued2014-01-01
dc.description.abstractWe assessed the spatial and temporal dynamic of the trophic state in a large Amazonian hydroelectric reservoir during the Austral wintertime using images acquired by the Operational Land Imager (OLI) sensor on board the Landsat 8 satellite. We used the Spectral Angle Mapper (SAM) algorithm and reference in situ spectra to classify the OLI images according to a trophic state index (TSI). The results showed that the use of OLI images and the SAM algorithm were suitable for the mapping of the TSI in the Amazonian reservoirs. In our particular case, the reservoir presented a high spatial and temporal heterogeneity in the TSI during the studied period. However, further studies are needed to better characterize the dynamics of the trophic state and its driven forces.en
dc.description.affiliationNational Institute for Space Research, Remote Sensing Division
dc.description.affiliationSão Paulo State University, Department of Cartography
dc.description.affiliationUnespSão Paulo State University, Department of Cartography
dc.format.extent890-893
dc.identifierhttp://dx.doi.org/10.1109/IGARSS.2014.6946568
dc.identifier.citationInternational Geoscience and Remote Sensing Symposium (IGARSS), p. 890-893.
dc.identifier.doi10.1109/IGARSS.2014.6946568
dc.identifier.scopus2-s2.0-84911435086
dc.identifier.urihttp://hdl.handle.net/11449/227889
dc.language.isoeng
dc.relation.ispartofInternational Geoscience and Remote Sensing Symposium (IGARSS)
dc.sourceScopus
dc.subjectAmazon
dc.subjecthydroelectric reservoir
dc.subjectremote sensing
dc.subjectspectral angle mapper
dc.subjecttrophic state index
dc.titleSpatial and temporal dynamic of the trophic state in a large Amazonian hydroelectric reservoiren
dc.typeTrabalho apresentado em evento
unesp.departmentCartografia - FCTpt

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