154 documents found, page 1 of 16
Marine terrace staircases of western Iberia: Uplift rate patterns from rocky li...
Martins, António; Gouveia, Margarida; Cunha, Pedro; Cabral, João; Gomes, Alberto; Falguères, Christophe Falguères; Voinchet, Pierre; Stokes, MartinThe Western Iberian Peninsula is undergoing compressive tectonic reactivation, resulting in spatial and temporal variations of surface uplift. Uplift quantification can be undertaken in coastal settings using staircases of shore platforms developed onto rocky headlands. This study analyses two marine terrace staircases in central Portugal: Cape Raso - Abano beach and Cape Espichel. Geomorphic and stratigraphic ...
Muography Applied in Underground Geological Surveys: Ongoing Work at the Lousal...
Teixeira, Pedro; Blanco, Alberto; Caldeira, Bento; Tomé, Bernardo; Alexandre, Isabel; Matos, João; Silva, Jorge; Borges, José; Cazon, LorenzoThe LouMu Project is an ongoing collaboration between the Laboratory of Instrumentation and Experimental Particle Physics (LIP), the Institute of Earth Sciences—University of Évora and the Lousal Ciência Viva Center which is evaluating the muography potential in the Lousal Mine, with the general aim to create the conditions to use muography as a novel method for geophysical surveys in Portugal. The National Lab...
Advanced Geophysical Processing of Ground-Penetrating Radar and Magnetic Datasets
Oliveira, Rui Jorge; Caldeira, Bento; Teixidó, Teresa; Borges, José FernandoDue to the presence of an excessive amount of noise in the data, archeological geophysics frequently produces results that cannot be used to evaluate the content that may exist in the subsurface. If it is impossible to differentiate between signal and noise, excessive noise will result. Its genesis, when it is attributable to heterogeneities in the ground (overthrows, corners) that produce as many reflections a...
Muon tomography with Resistive Plate Chambers for geological characterization
Sarmento, Raul; Castro, Alberto Blanco; Caldeira, Bento; Tomé, Bernardo; Loureiro, Custódio; Clemêncio, Filomena; Costa, João; Matos, JoãoMuon tomography is one of several fields of applied physics that have witnessed the successful use of particle detection based on Resistive Plate Chambers (RPC). In this work, we report on an innovative project concerning transmission muography for geological characterization. For this purpose, a muon telescope built of four RPC planes was mounted on an adjustable structure and the telescope's response to atmos...
Tools for managing metal contaminated areas: multidisciplinary approach to deve...
Oliveira, Rui Jorge; Caldeira, Bento; Palma, Patrícia; Costa, Maria João; Fialho, AnaThis work aims to develop an environmental management model specifically designed for mining areas that have been contaminated by toxic metals. A sustainable management model is suggested to be established, utilizing a combination of developed tools. This model will provide tools and strategies to effectively manage and mitigate the environmental impact of such contamination, with the goal of promoting an incre...
Instrumento de gestão de áreas contaminadas por metais combinando dados de Quím...
Oliveira, Rui Jorge; Caldeira, Bento; Palma, Patrícia; Costa, Maria João; Fialho, AnaO Projeto INCOME propõe a criação de um modelo de gestão ambiental para áreas mineiras contaminadas por metais tóxicos. Este modelo integra os resultados da aplicação de um conjunto de métodos analíticos e instrumentos de monitorização de áreas contaminadas, como análises biofísicas, química do solo e da água (parâmetros de qualidade e quantificação de metais potencialmente tóxicos em amostras de solo e água), ...
Optical characterization of the S˜ao Domingos Mine heaps with satellite imaging
Oliveira, Rui Jorge; Caldeira, Bento; Costa, Maria João; Palma, Patrícia; Fialhgo, AnaThe INCOME Project proposes the creation of an environmental management model for mining areas contaminated by toxic metals [1]. This model integrates the results of the application of a set of analytical methods [2] and instruments for monitoring contaminated areas, such as biophysical analyses, soil, and water chemistry, geophysics, and satellite [3] hyperspectral remote sensing. Data from all research will b...
Optical study of soil samples contaminated by heavy metals from the São Domingo...
Oliveira, Rui Jorge; Teixeira, Pedro; Caldeira, Bento; Borges, José Fernando; Costa, Maria João; Bortoli, Daniele; Potes, Miguel; Rodrigues, GonçaloThe study of soils contaminated by heavy metals (HMs) is a hard task that implies the collecting of soil samples in an area representative of the contaminated space. For example, for water samples, the law requires the creation of a study grid with 5 ha spacing. Considering this spacing requirement, to the soil from the São Domingos Mine, that have an area of approximately 2000 ha, we need to collect 400 sample...
Evaluation of historical buildings using laser scanning - a case-study of Funch...
Oliveira, Rui Jorge; Valadas, Sara; Caldeira, Bento; Candeias, António; Abrantes, Filipa; Machado, Ana; Murta, ElsaNon-invasive and non-destructive procedures offer a benefit over standard methods of chemical analysis in the study of heritage. Unlike intrusive sampling, which involves removing a sample for examination, these approaches do not cause any damage to the materials being studied. The utilization of laser scanning enables the generation of a three-dimensional point cloud representing the object under investigation...
Identification of Archaeological Elements with Ground-Penetrating Radar (GPR): ...
Oliveira, Rui Jorge; Trapero, Pedro; Caldeira, BentoThe application of non-invasive and non-destructive techniques in geophysical prospection, has become a common practice in the search for archaeological elements without resorting to excavation. The interaction between archaeologists and geophysicists has not always been ideal, with archaeologists possessing the tools to process and understand the data, while geophysicists face their own set of challenges. The ...