RT info:eu-repo/semantics/article
T1 Monitoring sedimentary areas from mine waste products with Sentinel‐2 satellite images: A case study in the            SE            of Spain
A1 Pereira, Inés
A1 Alcalde Aparicio, Sara
A1 Ferrer Juliá, Montserrat
A1 Carreño, María Francisca
A1 García Meléndez, Eduardo
A2 Edafologia y Quimica Agricola
K1 Ingeniería agrícola
K1 Geomorphology
K1 Iron oxides
K1 Mine degraded soil
K1 Mineral distribution
K1 Multispectral
K1 Rambla del Beal
K1 Remote sensing
K1 Water erosion
K1 2511 Ciencias del Suelo (Edafología)
K1 2511.07 Ingeniería de Suelos
AB [EN] Torrential rainfall regimes, among others, are the origin of accelerated soil erosion. The Spanish southeastern Mediterranean region is characterised by an arid climate regime affected by extreme erosion episodes with an important loss of sediments. Soil erosion effects are even more noticeable in areas where soil has been anthropically degraded, as in the mining district of Sierra Minera de Cartagena. The present research focuses on monitoring and mapping the changes in the sediment distribution of iron oxides and hydroxyl (OH−) bearing minerals caused by a cold drop known in Spanish as 'DANA' in September 2019 on the Rambla del Beal. This short rambla is fed by sediments from its drainage basin and by mining residues, irrigating a wide agricultural area. When discharges overflow the rambla channel, residues spread over its floodplain and reach the ecological protected coastal lagoon Mar Menor. The objective of the study was mapping the mineral distribution of the mining materials eroded from the source areas and sedimented in Rambla del Beal during a DANA. The study was carried out using a pre- and a post-DANA image from the Sentinel-2 satellite. After masking vegetation, urban areas and water bodies, different band ratios (B4/B3, B11/B12, B8A/B6) and a Spectral Angle Mapper (SAM) classification were applied. Sediment deposits were identified in wider areas after the DANA. Iron oxides increased their extension by 11.08% in the central area (B3/B4 with R2 of 0.84) and hydroxyl-bearing minerals increased by 8.95% in the Rambla del Beal's headwaters (B11/B12 with R2 of 0.71). The SAM classification (with a 0.1 rad threshold and an overall accuracy of 87.33%) allowed the differentiation and classification of two ferric iron oxides (haematite and goethite) and one iron hydrous sulphate mineral (jarosite). Additionally, band ratio images were spatially overlaid with the soil land uses map layer of the cadastre in order to plot the land uses most affected by the transported sediments during the DANA. These results highlighted agricultural land as the areas (land uses) most affected by iron oxides deposition, as oxidation processes occur more rapidly in these areas. However, grassland and scrubland were the areas with the highest content of hydroxyl-bearing minerals, as water is accumulated in these places, which favours hydrolysis reactions.
PB Wiley-Blackwell
SN 1351-0754
LK http://hdl.handle.net/10612/15394
UL http://hdl.handle.net/10612/15394
NO Pereira, I., Alcalde-Aparicio, S., Ferrer-Julià, M., Carreño, M. F., & García-Meléndez, E. (2023). Monitoring sedimentary areas from mine waste products with Sentinel-2 satellite images: A case study in the SE of Spain. European Journal of Soil Science, 74( 1), e13336. https://doi.org/10.1111/ejss.13336
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 05-may-2024