@Article{LoboSouNovCarBar:2018:MaMiAr,
author = "Lobo, Felipe de Lucia and Souza-Filho, Pedro Walfir Martins and
Novo, Evlyn M{\'a}rcia Le{\~a}o de Moraes and Carlos, Felipe
Menino and Barbosa, Cl{\'a}udio Clemente Faria",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Tecnol{\'o}gico Vale (ITV)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Mapping mining areas in the Brazilian amazon using MSI/Sentinel-2
imagery (2017)",
journal = "Remote Sensing",
year = "2018",
volume = "10",
number = "8",
pages = "e1178",
month = "Aug.",
keywords = "small-scale mining, industrial mining, google engine, image
classification, land-use cover change.",
abstract = "Although mining plays an important role for the economy of the
Amazon, little is known about its attributes such as area, type,
scale, and current status as well as socio/environmental impacts.
Therefore, we first propose a low time-consuming and high
detection accuracy method for mapping the current mining areas
within 13 regions of the Brazilian Amazon using Sentinel-2 images.
Then, integrating the maps in a GIS (Geography Information System)
environment, mining attributes for each region were further
assessed with the aid of the DNPM (National Department for Mineral
Production) database. Detection of the mining area was conducted
in five main steps. (a) MSI (MultiSpectral Instrument)/Sentinel-2A
(S2A) image selection; (b) definition of land-use classes and
training samples; (c) supervised classification; (d) vector
editing for quality control; and (e) validation with
high-resolution RapidEye images (Kappa = 0.70). Mining areas
derived from validated S2A classification totals 1084.7 km2 in the
regions analyzed. Small-scale mining comprises up to 64% of total
mining area detected comprises mostly gold (617.8 km2 ), followed
by tin mining (73.0 km2 ). The remaining 36% is comprised by
industrial mining such as iron (47.8), copper (55.5) and manganese
(8.9 km2 ) in Caraj{\'a}s, bauxite in Trombetas (78.4) and Rio
Capim (48.5 km2 ). Given recent events of mining impacts, the
large extension of mining areas detected raises a concern
regarding its socio-environmental impacts for the Amazonian
ecosystems and for local communities.",
doi = "10.3390/rs10081178",
url = "http://dx.doi.org/10.3390/rs10081178",
issn = "2072-4292",
language = "en",
urlaccessdate = "01 maio 2024"
}