| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | marte2.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 3ERPFQRTRW34M/3E7GFFK |
| Repository | dpi.inpe.br/marte2/2013/05.28.23.53.05 |
| Last Update | 2013:05.28.23.53.05 (UTC) administrator |
| Metadata Repository | dpi.inpe.br/marte2/2013/05.28.23.53.06 |
| Metadata Last Update | 2018:06.06.03.32.48 (UTC) administrator |
| ISBN | 978-85-17-00066-9 (Internet) 978-85-17-00065-2 (DVD) |
| Label | 694 |
| Citation Key | LimaRibeFerrBarb:2013:AnEsSi |
| Title | Análise espectral in situ e orbital para a estimativa da concentração de clorofila-a no reservatório da UHE de Funil - RJ  |
| Format | DVD, Internet. |
| Year | 2013 |
| Access Date | 2024, May 18 |
| Secondary Type | PRE CN |
| Number of Files | 1 |
| Size | 1173 KiB |
| 2. Context | |
| Author | 1 Lima, Ricardo Neves de Souza 2 Ribeiro, Celso Bandeira de Melo 3 Ferreira, Rafael Damiati 4 Barbosa, Cláudio Clemente Faria |
| Resume Identifier | 1 2 3 4 8JMKD3MGP5W/3C9JGSB |
| Group | 1 2 3 4 DPI-OBT-INPE-MCTI-GOV-BR |
| Affiliation | 1 2 3 4 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 ricneves80@yahoo.com.br |
| Editor | Epiphanio, José Carlos Neves Galvão, Lênio Soares |
| Conference Name | Simpósio Brasileiro de Sensoriamento Remoto, 16 (SBSR) |
| Conference Location | Foz do Iguaçu |
| Date | 13-18 abr. 2013 |
| Publisher | Instituto Nacional de Pesquisas Espaciais (INPE) |
| Publisher City | São José dos Campos |
| Pages | 5888-5895 |
| Book Title | Anais |
| Organization | Instituto Nacional de Pesquisas Espaciais (INPE) |
| History (UTC) | 2013-05-28 23:53:06 :: banon -> administrator :: 2018-06-06 03:32:48 :: administrator -> marcelo.pazos@inpe.br :: 2013 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Abstract | Spectral algorithms can be used to estimate chlorophyll-a concentration in optically complex aquatic ecosystems. The absorption and scattering characteristics of chlorophyll-a in water can be used to construct bio-optics models to estimate its concentration from spectral data obtained by in situ and satellite sensors. The Funil reservoir is known as a eutrophic environment with frequent episodes of algal blooms, which changes the optical characteristics of the water. To evaluate the potential use of spectral algorithms for chlorophyll-a estimation in this reservoir in situ radiometric and limnological measurements were performed, and MERIS sensor data obtained. We tested NIR/Red, NDVI and First Derivative Spectral algorithms. The field spectra and MERIS sensor data showed diagnostic features of chlorophyll-a in green, red and near-infrared regions. The First Derivative highlighted the feature around 690 nm, while most significant adjustments for field spectra were among NDVI and NIR/Red ratio and log-transformed chlorophyll-a values, with R² of 0.78 and 0.77, respectively. For MERIS sensor data adjustments were less significant, with R² of 0.35 for the regression between NDVI and chlorophyll-a, possibly by interference with the signal due to the low resolution image format and narrow reservoir. Nevertheless, as well as the in situ spectra, the main features of chlorophyll-a were identified in the MERIS image. |
| Area | SRE |
| Type | Hidrologia |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/3ERPFQRTRW34M/3E7GFFK |
| zipped data URL | http://urlib.net/zip/3ERPFQRTRW34M/3E7GFFK |
| Language | pt |
| Target File | p0694.pdf |
| User Group | administrator banon |
| Visibility | shown |
| 5. Allied materials | |
| Mirror Repository | iconet.com.br/banon/2006/11.26.21.31 |
| Next Higher Units | 3ERPFQRTRW34M/3E7G88S 8JMKD3MGPCW/3EQCCU5 |
| Citing Item List | sid.inpe.br/bibdigital/2013/09.09.15.05 5 dpi.inpe.br/marte2/2013/05.28.22.25 3 sid.inpe.br/mtc-m21/2012/07.13.14.43.57 2 |
| Host Collection | dpi.inpe.br/marte2/2013/05.17.15.03.06 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi e-mailaddress edition issn keywords lineage mark nextedition notes numberofvolumes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission rightsholder schedulinginformation secondarydate secondarykey secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype url versiontype volume |
| 7. Description control | |
| e-Mail (login) | marcelo.pazos@inpe.br |
| update | |