| 1. Identity statement | |
| Reference Type | Journal Article |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Site | mtc-m12.sid.inpe.br (namespace prefix: upn:EFDBHS) |
| Identifier | 6qtX3pFwXQZ3r59YD6/GPAdG |
| Repository | sid.inpe.br/iris@1912/2005/07.21.00.27 (restricted access) |
| Last Update | 2014:06.24.17.24.02 (UTC) marciana |
| Metadata Repository | sid.inpe.br/iris@1912/2005/07.21.00.27.12 |
| Metadata Last Update | 2026:04.17.16.38.42 (UTC) administrator |
| Secondary Key | INPE-8966-PRE/4661 |
| DOI | 10.1016/S0034-4257(01)00237-1 |
| ISSN | 0034-4257 |
| Label | 9896 |
| Citation Key | Almeida-FoShim:2002:DiPrLa |
| Title | Digital processing of a Landsat-TM time series for mapping and monitoring degraded areas caused by independent gold miners, Roraima State, Brazilian Amazon  |
| Year | 2002 |
| Month | Jan. |
| Access Date | 2026, July 29 |
| Type of Work | journal article |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 538 KiB |
| 2. Context | |
| Author | 1 Almeida-Filho, Raimundo 2 Shimabukuro, Yosio Edemir |
| Group | 1 DSR-INPE-MCT-BR 2 DSR-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 rai@ltid.inpe.br 2 yosio@ltid.inpe.br |
| Journal | Remote Sensing of Environment |
| Volume | 79 |
| Number | 1 |
| Pages | 42-50 |
| Host Collection | sid.inpe.br/banon/2001/04.06.10.52 upn:EFDBHS |
| History (UTC) | 2008-06-09 19:19:11 :: administrator -> jefferson :: 2010-07-07 19:05:50 :: jefferson -> administrator :: 2002 2013-03-11 14:44:36 :: administrator -> marciana :: 2002 2013-03-20 16:26:52 :: marciana -> administrator :: 2002 2013-11-29 14:44:01 :: administrator -> marciana :: 2002 2014-06-24 17:24:02 :: marciana -> administrator :: 2002 2026-04-17 16:38:42 :: administrator -> :: 2002 |
| 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 |
| Keywords | geologia Amazônia (Região) mapeador temático (Landsat) análise de series temporais mapeamento monitoramento ambiental exatidão degradação thematic mappers (Landsat) time series analysis environmental monitoring accuracy degradation |
| Abstract | A 12-year Landsat-Thematic Mapper (TM)time series (1987-1999) was used for mapping and monitoring evolution of degraded areas caused by independent miners ("garimpeiros")in the search for gold and diamond. Discrimination of target areas was achieved through third principal component images, due to their best enhancement of bare soil areas relative to the surrounding savanna vegetated terrain. A postclassification approach, based on image segmentation/region classification techniques, was used to map degraded areas. This procedure allowed to save time and to curtail inherent subjectivity commonly involved in visual interpretation, producing accurate land-cover change maps. According to these maps. degraded areas comprise 94.4 ha in 1987. 286.4 ha in 1991, and 404.4 ha in 1994. After "garimpeiros" abandoned the region sometime prior to 1994, vegetation soon started recovering mined areas as shown in images acquired in 1995, 1996, and 1999. According to these images, degraded areas decreased to 311.2, 283.7, and 246.2 ha, respectively. Data also indicate that vegetation regrowth is faster near the border of degraded areas, and becomes slower to the center of these areas, where damage process is more intense. Based on the satellite images-derived regrowth rates. it is possible to infer that degraded areas would not be entirely recovered by vegetation by the year 2019. |
| Area | SRE |
| Arrangement 1 | urlib.net > BDMCI > Fonds > Arquivos pessoais > Yosio Edemir Shimabukuro:... > Digital processing of... |
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Digital processing of... |
| 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 | 1-s2.0-S0034425701002371-main.pdf |
| User Group | administrator jefferson marciana |
| Reader Group | administrator marciana |
| Visibility | shown |
| Archiving Policy | denypublisher allowfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD2USNRW34T/4FDQ64S 8JMKD3MGPCW/3ER446E |
| Citing Item List | sid.inpe.br/mtc-m12e/2026/03.30.18.04 - 17 sid.inpe.br/bibdigital/2013/09.13.21.11 - 8 |
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url |