| 1. Identificação | |
| Tipo de Referência | Artigo em Revista Científica (Journal Article) |
| Site | mtc-m12.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZ3r59YD6/GPA8y |
| Repositório | sid.inpe.br/iris@1912/2005/07.21.00.22.27 (acesso restrito) |
| Última Atualização | 2016:03.02.16.41.44 (UTC) marciana |
| Repositório de Metadados | sid.inpe.br/iris@1912/2005/07.21.00.22.29 |
| Última Atualização dos Metadados | 2021:01.24.14.03.23 (UTC) administrator |
| Chave Secundária | INPE-8579-PRE/4323 |
| ISSN | 0143-1161 |
| Rótulo | 9556 |
| Chave de Citação | CostaNiemNovoAher:2002:BiPrMa |
| Título | Biophysical properties and mapping of aquatic vegetation during the hydrological cycle of the Amazon floodplain using JERS-1 and Radarsat  |
| Ano | 2002 |
| Data Secundária | 20020511 |
| Mês | Apr. |
| Data de Acesso | 11 maio 2024 |
| Tipo Secundário | PRE PI |
| Número de Arquivos | 1 |
| Tamanho | 5657 KiB |
| 2. Contextualização | |
| Autor | 1 Costa, Maycira Pereira de Farias 2 Niemann, O. 3 Novo, Evlyn Márcia Leão de Moraes 4 Ahern, F |
| Grupo | 1 DSR-INPE-MCT-BR 2 3 DSR-INPE-MCT-BR |
| Revista | International Journal of Remote Sensing |
| Volume | 23 |
| Número | 7 |
| Páginas | 1401-1426 |
| Histórico (UTC) | 2005-07-21 00:22:30 :: administrator -> jefferson :: 2006-05-29 15:00:40 :: jefferson -> administrator :: 2008-06-09 19:18:53 :: administrator -> banon :: 2008-11-05 15:15:48 :: banon -> jefferson :: 2010-07-07 19:05:44 :: jefferson -> marciana :: 2011-11-01 19:04:45 :: marciana -> administrator :: 2002 2014-09-29 15:57:11 :: administrator -> marciana :: 2002 2016-03-02 16:41:45 :: marciana -> administrator :: 2002 2021-01-24 14:03:23 :: administrator -> marciana :: 2002 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Palavras-Chave | ESTUDOS INTEGRADOS DO MEIO AMBIENTE Amazônia (Região) plantas aquáticas biomassa ciclo hidrológico planícies inundadas imagens de radar classificação de imagens mapeamento radar de abertura sintetica SAR forestas JERS 1 biomass synthetic aperture radar forest rice canopy aquatic plants hydrological cycle food plains radar imagery image classification mapping |
| Resumo | Field measurements were combined with Synthetic Aperture Radar (SAR)images to evaluate the use of radar for estimating biomass changes and mapping of aquatic vegetation in the lower Amazon. Field campaigns were conducted concomitant to the acquisition of Radarsat and JERS-1 images at five different stages of the hydrological cycle. The temporal variability of the SAR data for aquatic vegetation shows a dynamic range of 5 dB, however this is due dominantly to the significant differences (p<0.05)between the low water season when vegetation is small and just emerging and other seasons when vegetation is fully developed. The spatial variability of the above-water biomass is detectable with radar data. Significant correlation (p<0.05)exist between backscattering coefficients and both above-water dry biomass and height of the plants. The logarithmic relationship between backscattering coefficients and biomass suggests that (1)at low biomass, high transmissivity of the microwave radiation through the vegetation canopy occurs and the backscattering is a result of quasi-specular reflection of both C and L bands and a minor contribution of canopy volume scattering from C band; (2)at intermediate levels of biomass, moderate changes in backscattering values occur and the saturation point of backscattering is reached; and (3)at high biomass, the transmissivity of C and L band radiation is equally attenuated and backscattering approaches similar values for both. A combination of Radarsat and JERS-1 images from high and low water periods were classified using a segmentation algorithm and had an accuracy higher than 97 percent for vegetated areas of the floodplain. Although further research is needed to better understand the saturation points for Radarsat and JERS-1 data, these findings clearly show that C and L bands can accurately map aquatic vegetation of the Amazon floodplain. |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Biophysical properties and... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Arquivo Alvo | INPE 8579.pdf |
| Grupo de Usuários | administrator banon jefferson marciana |
| Grupo de Leitores | administrator marciana |
| Visibilidade | shown |
| Detentor da Cópia | SID/SCD |
| Política de Arquivamento | denypublisher denyfinaldraft12 |
| Permissão de Leitura | deny from all and allow from 150.163 |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Divulgação | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notas | |
| Campos Vazios | affiliation alternatejournal archivist callnumber copyright creatorhistory descriptionlevel doi e-mailaddress electronicmailaddress format isbn language lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |