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Soil contamination assessment of a 19th-century abandoned Sb–Au mine in northern PortugalNARA Subscribed
Abandoned mines are among the main sources of long-term soil contamination, often leaving behind persistent concentrations of potentially toxic elements (PTE) that pose environmental and health risks. Ribeiro da Serra Sb–Au mine, in Portugal, active from 1858 to 1890, has left a significant environmental legacy. This study mapped the spatial distribution of mine processing residues, elemental characterisation distinguishing be...
The Toxicology Investigators Consortium 2024 Annual ReportNARA Subscribed
Magnetic properties of iron ores from two Ordovician deposits in Northern Portugal: Marão and MoncorvoNARA Subscribed
The Vila Cova do Marão Mining Field (VCMF) and the Moncorvo Iron Complex (MIC) in northern Portugal are important geo-resources of iron. Here we provide a detailed characterisation of their mineralogy through petrographic observations and magnetic properties. Petrographic observations show the VCMF ore primarily consists of quartz, magnetite, and chlorite, while the MIC ore of hematite and quartz, with rare magnetite occurrenc...
The Toxicology Investigators Consortium 2023 Annual ReportNARA Subscribed
Combining Deep Learning and Robust Estimation for Outlier-Resilient Underwater Visual Graph SLAMOA Marine
Visual Loop Detection (VLD) is a core component of any Visual Simultaneous Localization and Mapping (SLAM) system, and its goal is to determine if the robot has returned to a previously visited region by comparing images obtained at different time steps. This paper presents a new approach to visual Graph-SLAM for underwater robots that goes one step forward the current techniques. The proposal, which centers its attention on d...
Recent technological developments have paved the way to the employment of Autonomous Underwater Vehicles (AUVs) for monitoring and exploration activities of marine environments. Traditionally, in information gathering scenarios for monitoring purposes, AUVs follow predefined paths that are not efficient in terms of information content and energy consumption. Informative Path Planning (IPP) represents a valid alternative, defin...
Geomorphological markers of faulting and neotectonic activity along the western Andean margin, northern ChileNARA Subscribed
In the Atacama Desert, northern Chile, some ephemeral channels are developed in the Plio‐Quaternary alluvial sequence that caps the Neogene Atacama Gravels Formation. Geomorphological studies and high‐resolution digital elevation data (GPS) along a structural transect in the Central Depression are used to document modern growth history of subtle folding and faulting in the fore‐arc region. Outcrop data of the most recent depos...
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