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Monitoring acidic water in a polluted river with hyperspectral remote sensing (HyMap)

Riaza, Asuncion and Buzzi, Jorge and Garcia-Melendez, Eduardo and Carrere, V. and Sarmiento, A. and Müller, Andreas (2015) Monitoring acidic water in a polluted river with hyperspectral remote sensing (HyMap). Hydrological Sciences Journal / Journal des sciences hydrologiques, 60 (6), pp. 1064-1077. Taylor & Francis. DOI: DOI:10.1080/02626667.2014.899704 ISSN 0262-6667

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Official URL: http://www.tandfonline.com/doi/full/10.1080/02626667.2014.899704


Sulphide mine waste extensively contaminates the Odiel River (southwest Spain), releasing sulphuric acid into the water body. Acidic water in this river precipitates and dissolves variably hydrated iron sulphate in a complex geological pattern controlled by climate. Local abrupt changes in the water pH in the vicinity of highly contaminated tributaries can be mapped by means of imaging spectroscopy using hyperspectral remote sensing (HyMap) data. Also, increased pH through mixing of acidic river water with marine water can be detected when the river reaches the area influenced by sea tides. Mapping the quality of water with hyperspectral data is confounded by vegetation, either dry or wet, rooted or floating. The spectral features of acidic water measured with a field spectrometer revealed the spectral influence of green vegetation, similar to the influence of the depth and transparency of water. Careful mapping of such parameters with HyMap data must therefore precede any spectral evaluation of water related to acidity in a river course. The spectral features detectable by HyMap data and associated with pH changes caused by contamination in river water by iron sulphide mine waste, and their controls, are described and references established for routine monitoring through hyperspectral image processing.

Item URL in elib:https://elib.dlr.de/96164/
Document Type:Article
Title:Monitoring acidic water in a polluted river with hyperspectral remote sensing (HyMap)
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Riaza, AsuncionGeological Survey of Spain (IGME)UNSPECIFIED
Buzzi, JorgeGeological Survey of Spain (IGME)UNSPECIFIED
Garcia-Melendez, Eduardoegarm (at) unileon.esUNSPECIFIED
Carrere, V.Université de NantesUNSPECIFIED
Sarmiento, A.Universidad de HuelvaUNSPECIFIED
Müller, Andreasandreas.mueller (at) dlr.deUNSPECIFIED
Date:27 April 2015
Journal or Publication Title:Hydrological Sciences Journal / Journal des sciences hydrologiques
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :DOI:10.1080/02626667.2014.899704
Page Range:pp. 1064-1077
Publisher:Taylor & Francis
Keywords:hyperspectral remote sensing, acid mine drainage, river pollution, HyMap,
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: Müller, Andreas
Deposited On:18 Jun 2015 09:29
Last Modified:31 Jul 2019 19:52

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