Characterization of an Intraplate Seismogenic Zone Using Geophysical and Borehole Data: The Vila Franca de Xira Fault, Portugal

João Carvalho; Daniela Alves; João Cabral; Ranajit Ghose; José Borges; Ruben Dias; Elsa Ramalho; Bento Caldeira; João Casacão; Jaime Leote   The Vila Franca de Xira (VFX) fault is a regional fault zone located about 25 km northeast of Lisbon, affecting Neogene sediments. Recent shear‐wave seismic studies show that this complex fault zone is buried beneath […]

Development of a clear-sky model to determine circumsolar irradiance using widely available solar radiation data

Edgar F. M. Abreu, Paulo Canhoto, Maria João Costa Accurate assessment of the solar irradiance reaching the absorber of concentrating solar power (CSP) systems is crucial for accurate energy generation estimates as well as for power plants design and operation. Due to a larger aperture angle, direct normal irradiance (DNI) measurements taken by pyrheliometers include […]

Assessment of Direct Normal Irradiance Forecasts Based on IFS/ECMWF Data and Observations in the South of Portugal

João Perdigão, Paulo Canhoto, Rui Salgado and Maria João Costa Assessment of Direct Normal Irradiance Forecasts Based on IFS/ECMWF Data and Observations in the South of Portugal Direct Normal Irradiance (DNI) predictions obtained from the Integrated Forecasting System of the European Centre for Medium-Range Weather Forecast (IFS/ECMWF) were compared against ground-based observational data for one […]

A Discussion on the Quantification and Classification of Geodiversity Indices Based on GIS Methodological Tests

Jéssica Gonçalves, Kátia Mansur, Daniel Santos, Renato Henriques & Paulo Pereira A Discussion on the Quantification and Classification of Geodiversity Indices Based on GIS Methodological Tests Quantitative assessment methods are attaining special attention in geodiversity research. Procedures to map geodiversity indices have been proposed by several authors though there is no consensus on how to best […]

Mapping occupational health risk factors in the primary sector—A novel supervised machine learning and Area-to-Point Poisson kriging approach

S.Gerassis, C.Boente, M.T.D.Albuquerque. M.M.Ribeiro, A.Abad, J.Taboada   Mapping occupational health risk factors in the primary sector—A novel supervised machine learning and Area-to-Point Poisson kriging approach Workers around the world spend nearly a quarter of their time at work Occupational health is gaining great importance due to the profound impact on people long term health. The […]

Study of the PGV, Strong Motion and Intensity Distribution of the February 1969 (Ms 8.0) Offshore Cape St. Vincent (Portugal) Earthquake Using Synthetic Ground Velocities

C. Pro, E. Buforn, A. Udías, J. Borges & C. S. Oliveira (2020). Study of the PGV, Strong Motion and Intensity Distribution of the February 1969 (Ms 8.0) Offshore Cape St. Vincent (Portugal) Earthquake Using Synthetic Ground Velocities. Pure and Applied Geophysics (2020) Study of the PGV, Strong Motion and Intensity Distribution of the February […]

Spatial and Temporal Variation of Aerosol and Water Vapour Effects on Solar Radiation in the Mediterranean Basin during the Last Two Decades

Maria A. Obregón, Maria João Costa, Ana Maria Silva, Antonio Serrano Spatial and Temporal Variation of Aerosol and Water Vapour Effects on Solar Radiation in the Mediterranean Basin during the Last Two Decades This study aims to calculate and analyse the spatial and temporal variation of aerosol optical thickness (AOT) and precipitable water vapour (PWV) […]

Lightning modelling for the research of forest fire ignition in Portugal

Flavio Tiago Couto, Maksim Iakunin, Rui Salgado, Paulo Pinto, Tânia Viegas, Jean-Pierre Pinty   Lightning modelling for the research of forest fire ignition in Portugal The study aims to assess the applicability of the current Meso-NH electrical scheme (CELLS) in the investigation of forest fire ignition. Therefore, the challenge is to diagnose cloud-to-ground (CG) lightning […]

Guidance for the Integrated Use of Hydrological, Geochemical, and Isotopic Tools in Mining Operations

Christian Wolkersdorfer, Darrell Kirk Nordstrom, Roger Daniel Beckie, Daniel S. Cicerone, Trevor Elliot, Mansour Edraki, Teresa Valente, Silvia Cristina Alves França, Pramod Kumar, Ricardo Andrés Oyarzún Lucero & Albert Soler i Gil  Guidance for the Integrated Use of Hydrological, Geochemical, and Isotopic Tools in Mining Operations This paper summarizes international state-of-the-art applications and opportunities for […]

Methodological approach for mineralogical characterization of tailings from a Cu(Au,Ag) skarn type deposit using QEMSCAN (Quantitative Evaluation of Minerals by Scanning Electron Microscopy)

K.Guanira, T.M.Valente, C.A.Ríos, O.M.Castellanos, L.Salazar, D.Lattanzi, P. Jaime Methodological approach for mineralogical characterization of tailings from a Cu(Au,Ag) skarn type deposit using QEMSCAN (Quantitative Evaluation of Minerals by Scanning Electron Microscopy) Skarn type deposits are important potential resources for Cu, Au, and Ag as well as other strategic metals, which require accurate characterization of the […]