| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | plutao.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP3W/3MTNFP5 |
| Repository | sid.inpe.br/plutao/2016/12.05.21.50.54 |
| Last Update | 2016:12.09.18.51.42 (UTC) administrator |
| Metadata Repository | sid.inpe.br/plutao/2016/12.05.21.50.55 |
| Metadata Last Update | 2020:10.01.15.57.54 (UTC) administrator |
| DOI | 10.3390/rs8070579 |
| ISSN | 2072-4292 |
| Label | lattes: 9857505876280820 3 LoboCostNovoTelm:2016:DiArSm |
| Citation Key | LoboCostNovoTelm:2016:DiArSm |
| Title | Distribution of artisanal and small-scale gold mining in the Tapajós River Basin (Brazilian Amazon) over the past 40 years and relationship with water siltation  |
| Year | 2016 |
| Access Date | 2024, Apr. 19 |
| Type of Work | journal article |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 19403 KiB |
| 2. Context | |
| Author | 1 Lobo, Felipe 2 Costa, Maycira 3 Novo, Evlyn Márcia Leão de Moraes 4 Telmer, Kevin |
| Resume Identifier | 1 2 3 8JMKD3MGP5W/3C9JH39 |
| Group | 1 2 3 DSR-OBT-INPE-MCTI-GOV-BR |
| Affiliation | 1 University of Victoria 2 University of Victoria 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 University of Victoria |
| Author e-Mail Address | 1 2 3 evlyn.novo@inpe.br 4 ktelmer@artisanalgold.org |
| Journal | Remote Sensing |
| Volume | 8 |
| Number | 7 |
| Secondary Mark | B3_GEOGRAFIA B3_ENGENHARIAS_I B4_GEOCIÊNCIAS B4_CIÊNCIAS_AMBIENTAIS B5_CIÊNCIAS_AGRÁRIAS_I |
| History (UTC) | 2016-12-05 21:50:55 :: lattes -> administrator :: 2016-12-09 07:59:58 :: administrator -> lattes :: 2016 2016-12-09 18:51:43 :: lattes -> administrator :: 2016 2020-10-01 15:57:54 :: administrator -> simone :: 2016 |
| 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 | gold mining remote sensing Tapajós Basin |
| Abstract | An innovative remote sensing approach that combines land-use change and water quality information is proposed in order to investigate if Artisanal and Small-scale Gold Mining (ASGM) area extension is associated with water siltation in the Tapajós River Basin (Brazil), containing the largest small-scale gold mining district in the world. Taking advantage of a 40-year period of the multi-satellite imagery archive, the objective of this paper is to build a normalized time-series in order to evaluate the influence of temporal mining expansion on the water siltation data (TSS, Total Suspended Solids concentration) derived from previous research. The methodological approach was set to deliver a full characterization of the ASGM expansion from its initial stages in the early 1970s to the present. First, based on IRS/LISSIII images acquired in 2012, the historical Landsat image database (19732001) was corrected for radiometric and atmospheric effects using dark vegetation as reference to create a normalized time-series. Next, a complete update of the mining areas distribution in 2012 derived from the TerraClass Project (an official land-use classification for the Brazilian Amazon) was conducted having IRS/LISSIII as the base map with the support of auxiliary data and vector editing. Once the ASGM in 2012 was quantified (261.7 km2 ) and validated with photos, a reverse classification of ASGM in 2001 (171.7 km2 ), 1993 (166.3 km2 ), 1984 (47.5 km2 ), and 1973 (15.4 km2 ) with the use of Landsat archives was applied. This procedure relies on the assumption that ASGM changes in the land cover are severe and remain detectable from satellite sensors for decades. The mining expansion area over time was then combined with the (TSS) data retrieved from the same atmospherically corrected satellite imagery based on the literature. In terms of gold mining expansion and water siltation effects, four main periods of ASGM activities were identified in the study area: (i) 19581977, first occurrence of mining activities and low water impacts; (ii) 19781993, introduction of low-budget mechanization associated with very high gold prices resulting in large mining area expansion and high water siltation levels; (iii) 19942003, general recession of ASGM activities and exhaustion of easy-access gold deposits, resulting in decreased TSS; (iv) 2004 to present, intensification of ASGM encouraged by high gold prices, resulting in an increase of TSS. |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Distribution of artisanal... |
| 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/8JMKD3MGP3W/3MTNFP5 |
| zipped data URL | http://urlib.net/zip/8JMKD3MGP3W/3MTNFP5 |
| Language | en |
| User Group | lattes self-uploading-INPE-MCTI-GOV-BR |
| Reader Group | administrator lattes |
| Visibility | shown |
| Archiving Policy | allowpublisher allowfinaldraft |
| Update Permission | not transferred |
| 5. Allied materials | |
| Linking | Trabalho não Vinculado à Tese/Dissertação |
| Mirror Repository | urlib.net/www/2011/03.29.20.55 |
| Next Higher Units | 8JMKD3MGPCW/3ER446E |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.45.43 1 |
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX; SCOPUS. |
| Host Collection | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notes | |
| Notes | Setores de Atividade: Pesquisa e desenvolvimento científico. |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn lineage mark month nextedition orcid pages parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject targetfile tertiarytype url |
| 7. Description control | |
| e-Mail (login) | simone |
| update | |