{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T13:53:48Z","timestamp":1768830828218,"version":"3.49.0"},"reference-count":73,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,5,25]],"date-time":"2021-05-25T00:00:00Z","timestamp":1621900800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Environments"],"abstract":"<jats:p>The S\u00e3o Pedro da Cova waste pile (Porto, Portugal) is composed of coal mining residues that have been self-burning since 2005 and is located close to an inhabited area and social infrastructures, further adding to effects on the environment and human health. Therefore, there is a great interest in the environmental monitoring of this waste pile. This work describes an integrative multi-approach that allows the environmental monitoring of several parameters of the waste pile, applying several technologies. The temperature measurements were obtained by a thermal infrared (TIR) sensor on board an unmanned aerial vehicle (UAV) and supplemented with field measurements. In order to evaluate the altimetric variations, for each flight, a digital elevation model (DEM) was generated considering a multispectral sensor also on board the UAV. The hydrogeochemical characterization was performed through the analysis of groundwater and surface water samples, with and without the influence of mine drainage. The soil monitoring included the analysis of waste material as well as the surface soil in the surrounding area of the waste pile. All the data were analyzed and integrated in a geographical information system (GIS) open-source application. The adopted multi-approach methodology, given its intrinsic interdisciplinary character, has proven to be an effective way of encompassing the complexity of this type of environmental problem.<\/jats:p>","DOI":"10.3390\/environments8060048","type":"journal-article","created":{"date-parts":[[2021,5,25]],"date-time":"2021-05-25T13:14:21Z","timestamp":1621948461000},"page":"48","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["An Integrated Multi-Approach to Environmental Monitoring of a Self-Burning Coal Waste Pile: The S\u00e3o Pedro da Cova Mine (Porto, Portugal) Study Case"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8043-6431","authenticated-orcid":false,"given":"Ana","family":"Teodoro","sequence":"first","affiliation":[{"name":"Institute of Earth Sciences, University of Porto Pole, Porto Pole, 4169-007 Porto, Portugal"},{"name":"Department of Geosciences, Environment and Spatial Planning, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6114-1427","authenticated-orcid":false,"given":"Patr\u00edcia","family":"Santos","sequence":"additional","affiliation":[{"name":"Institute of Earth Sciences, University of Porto Pole, Porto Pole, 4169-007 Porto, Portugal"},{"name":"Department of Geosciences, Environment and Spatial Planning, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4704-2174","authenticated-orcid":false,"given":"Jorge","family":"Espinha Marques","sequence":"additional","affiliation":[{"name":"Institute of Earth Sciences, University of Porto Pole, Porto Pole, 4169-007 Porto, Portugal"},{"name":"Department of Geosciences, Environment and Spatial Planning, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8659-234X","authenticated-orcid":false,"given":"Joana","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Institute of Earth Sciences, University of Porto Pole, Porto Pole, 4169-007 Porto, Portugal"},{"name":"Departament of Earth Sciences, University of Coimbra, 3004-531 Coimbra, Portugal"}]},{"given":"Catarina","family":"Mansilha","sequence":"additional","affiliation":[{"name":"Instituto Nacional de Sa\u00fade Doutor Ricardo Jorge, 1649-016 Lisbon, Portugal"},{"name":"REQUIMTE, Universidade do Porto, 4051-401 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9153-0773","authenticated-orcid":false,"given":"Armindo","family":"Melo","sequence":"additional","affiliation":[{"name":"Instituto Nacional de Sa\u00fade Doutor Ricardo Jorge, 1649-016 Lisbon, Portugal"},{"name":"REQUIMTE, Universidade do Porto, 4051-401 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7537-6606","authenticated-orcid":false,"given":"Lia","family":"Duarte","sequence":"additional","affiliation":[{"name":"Institute of Earth Sciences, University of Porto Pole, Porto Pole, 4169-007 Porto, Portugal"},{"name":"Department of Geosciences, Environment and Spatial Planning, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4455-9407","authenticated-orcid":false,"given":"C\u00e1tia","family":"Rodrigues de Almeida","sequence":"additional","affiliation":[{"name":"Department of Geosciences, Environment and Spatial Planning, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4631-7831","authenticated-orcid":false,"given":"Deolinda","family":"Flores","sequence":"additional","affiliation":[{"name":"Institute of Earth Sciences, University of Porto Pole, Porto Pole, 4169-007 Porto, Portugal"},{"name":"Department of Geosciences, Environment and Spatial Planning, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Li, J., Pei, Y., Zhao, S., Xiao, R., Sang, X., and Zhang, C. 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