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Observatori de l'Ebre: Envíos recientes

Mostrando ítems 41-44 de 44

    Vertical and oblique ionospheric soundings performance comparison over the 12,760 km transequatorial HF link between Antarctica and Spain 

    Alsina-Pagès, Rosa Ma; Hervás, Marcos; Altadill Felip, David; Calduch Casas, Jordi; Blanch Llosa, Estefania (Fecha de publicación: 2017-03)

    This paper presents the second part of the study of the oblique sounding of a 12,760 km transequatorial ionospheric link between Livingston Island (Antarctica) and Cambrils in Spain. The study consists of the comparison ...

    Geomagnetically induced currents in a power grid of northeastern Spain 

    Torta, Joan Miquel; Serrano, Lluís; Regué, Joan Ramon; Sánchez, Albert Miquel; Roldán, Elionor (Fecha de publicación: 2012-06-07)

    Using the geomagnetic records of Ebro geomagnetic observatory and taking the plane wave assumption for the external current source and a homogeneous Earth conductivity, a prediction of the effects of the geomagnetic ...

    Quantifying the Performance of Geomagnetically Induced Current Models 

    Marsal, Santiago; Torta, Joan Miquel (Fecha de publicación: 2019-07-24)

    We describe a metric that has been repeatedly applied to assess the performance of models aimed at predicting geomagnetically induced currents from Space Weather events. The used parameterization, based on the well‐known ...

    A New Standalone Tool for DC-Equivalent Network Generation and GIC Calculation in Power Grids With Multiple Voltage Levels 

    Marsal, Santiago; Torta, Joan Miquel; Canillas-Pérez, Victoria; Curto, Juan José (Fecha de publicación: 2022-01-15)

    Space Weather phenomena pose a major socio-economic threat due, in part, to the vulnerability of power network transformers to geomagnetically induced currents (GIC). In 1985, Lehtinen and Pirjola (LP) provided a method ...