| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repository | sid.inpe.br/mtc-m17@80/2008/03.28.18.22 (restricted access) |
| Last Update | 2008:03.28.18.22.44 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m17@80/2008/03.28.18.22.45 |
| Metadata Last Update | 2018:06.05.03.30.37 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| DOI | 10.1016/j.isprsjprs.2007.09.006 |
| ISSN | 0924-2716 1872-8235 |
| Citation Key | GalvãoFormCoutRobe:2008:ReThMi |
| Title | Relationships between the mineralogical and chemical composition of tropical soils and topography from hyperspectral remote sensing data  |
| Year | 2008 |
| Month | Fev. |
| Access Date | 2024, Apr. 27 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 1667 KiB |
| 2. Context | |
| Author | 1 Galvão, Lênio Soares 2 Formaggio, Antônio Roberto 3 Couto, Eduardo Guimarães 4 Roberts, Dar A. |
| Group | 1 DSR-OBT-INPE-MCT-BR 2 DSR-OBT-INPE-MCT-BR 3 DSR-OBT-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Universidade Federal da California 4 University of California |
| Author e-Mail Address | 1 lenio@dsr.inpe.br 2 formag@dsr.inpe.br 3 couto@ufmt.br |
| e-Mail Address | lenio@dsr.inpe.br |
| Journal | ISPRS Journal of Photogrammetry and Remote Sensing |
| Volume | 63 |
| Number | 2 |
| Pages | 259-271 |
| Secondary Mark | A |
| History (UTC) | 2008-06-19 13:48:30 :: lenio@dsr.inpe.br -> banon :: 2010-05-10 18:41:52 :: banon -> administrator :: 2010-05-11 02:43:04 :: administrator -> marciana :: 2011-12-05 10:52:13 :: marciana -> administrator :: 2008 2018-06-05 03:30:37 :: administrator -> marciana :: 2008 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Abstract | Airborne Visible/InfraRed Imaging Spectrometer (AVIRIS) data acquired in 1995 in the vicinity of Campo Verde, central Brazil, were analyzed to investigate the relationships between the mineralogical and chemical composition of different soil types and topography. Band depth analysis following the continuum removal separated areas of exposed soils from the other scene components. Principal component analysis (PCA) was applied to this subset of pixel spectra of exposed soils. The Spectral Feature Fitting (SFF) technique was used for mineral identification in the scene. Regression relationships between the silica/aluminum ratio and the absorption band depth values at 2210nm (kaolinite) and 2260nm (gibbsite), calculated from laboratory spectra after the continuum removal, were used to estimate the Ki index (1.7SiO2/Al2O3) in AVIRIS spectra, an indicator of the degree of soil weathering in soil surveys. Results were plotted over an Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)-derived digital elevation model showing that several soil properties varied with surface elevation. Low reflectance soils (e.g., Rhodic Acrustox with negative first component (PC1) scores, clay texture and higher organic carbon, SiO2, Al2O3, Fe2O3 and TiO2 content) predominated at higher elevations and high reflectance soils (e.g., Ustic Quartzipsamments with positive PC1 scores, sand texture and lower content of these constituents) at lower elevations. In some portions of the study area, soil composition changed gradually from Rhodic Acrustox at higher elevations to Xanthic Acrustox at lower elevations, or from lower average soil reflectance (negative PC1 scores) and deeper kaolinite absorption band to higher average soil reflectance (positive PC1 scores) and deeper gibbsite absorption band. When applied to AVIRIS data, the laboratory-derived relationship between the Ki index and the depth of the 2210 and 2260nm absorption bands showed a good correspondence with spectral fits for kaolinite and gibbsite. Kaolinitic areas were associated with high Ki values due to a high SiO2 and low Al2O3 content, whereas gibbsitic areas corresponded to low Ki values and highly weathered soil surfaces due to a low SiO2 and high Al2O3 content. |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Relationships between the... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | GALVAO_LS_ISPRS_63_2_2008.pdf |
| User Group | administrator lenio@dsr.inpe.br banon administrator marciana |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ER446E |
| Dissemination | WEBSCI |
| Host Collection | lcp.inpe.br/ignes/2004/02.12.18.39 cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format identifier isbn keywords label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |