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Mapping Changes in a Recovering Mine Site with Hyperspectral Airborne HyMap Imagery (Sotiel, SW Spain)

Buzzi, Jorge and Riaza, Asuncion and Garcia-Melendez, Eduardo and Weide, Sebastian and Bachmann, Martin (2014) Mapping Changes in a Recovering Mine Site with Hyperspectral Airborne HyMap Imagery (Sotiel, SW Spain). Minerals, 4, pp. 313-329. Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/min4020313 ISSN 2075-163X

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Official URL: http://www.mdpi.com/2075-163X/4/2/313

Abstract

Hyperspectral high spatial resolution HyMap data are used to map mine waste from massive sulfide ore deposits, mostly abandoned, on the Iberian Pyrite Belt (southwest Spain). Mine dams, mill tailings and mine dumps in variable states of pyrite oxidation are recognizable. The interpretation of hyperspectral remote sensing requires specific algorithms able to manage high dimensional data compared to multispectral data. The routine of image processing methods used to extract information from hyperspectral data to map geological features is explained, as well as the sequence of algorithms used to produce maps of the mine sites. The mineralogical identification capability of algorithms to produce maps based on archive spectral libraries is discussed. Trends of mineral growth differ spectrally over time according to the geological setting and the recovery state of the mine site. Subtle mineralogical changes are enhanced using the spectral response as indicators of pyrite oxidation intensity of the mine waste piles and pyrite mud tailings. The changes in the surface of the mill tailings deserve a detailed description, as the surfaces are inaccessible to direct observation. Such mineralogical changes respond faithfully to industrial activities or the influence of climate when undisturbed by human influence.

Item URL in elib:https://elib.dlr.de/88865/
Document Type:Article
Title:Mapping Changes in a Recovering Mine Site with Hyperspectral Airborne HyMap Imagery (Sotiel, SW Spain)
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Buzzi, JorgeGeological Survey of Spain (IGME)UNSPECIFIED
Riaza, AsuncionGeological Survey of Spain (IGME)UNSPECIFIED
Garcia-Melendez, EduardoUniversidad de LeónUNSPECIFIED
Weide, Sebastiansebastian.weide (at) dlr.deUNSPECIFIED
Bachmann, Martinmartin.bachmann (at) dlr.deUNSPECIFIED
Date:16 April 2014
Journal or Publication Title:Minerals
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:4
DOI :10.3390/min4020313
Page Range:pp. 313-329
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2075-163X
Status:Published
Keywords:hyperspectral; imaging spectroscopy; mine site recovery; change detection; pyrite weathering
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Fernerkundung der Landoberfläche (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface
Deposited By: Bachmann, Dr.rer.nat. Martin
Deposited On:05 May 2014 10:45
Last Modified:08 Mar 2018 18:36

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