Animations

In this page we present some animations based on the outputs of the project.

Time evolution of the 17-18th September 2021 geomagnetic storm registered at the Coimbra Magnetic Observatory - COI (center) and estimated GICs during the storm considering the effect of shield wires (left) and the corresponding relative variation on GIC intensity with and without shield wires (right).

Horizontal slices of the 3D conductivity model for Portugal mainland based on 32 magnetotelluric soundings (black dots). Black lines represent the major thrust faults. Dashed red lines separate the tectonostratigraphic zones based on Julivert et al. (1974). Abbreviations: CIZ - Central Iberian Zone; GTMZ - Galicia-Tras-os-Montes Zone; OMZ - Ossa-Morena Zone; SPZ - South Portuguese Zone; PTSZ - Porto-Tomar Shear Zone; VF - Vilarica Fault; PRVF - Penacova-Regua-Verin Fault; J-PCSZ - Juzbado-Penalva- Castelo de Vide Shear Zone; MLSZ - ; EsT - Espinhel Thrust; MF - Messejana Fault.

Time evolution of the St. Patrick geomagnetic storm as registered at the Coimbra Magnetic Observatory - COI (left) and estimated GICs during the storm, for the set of all substations in Portugal mainland (right).

GICs in Portugal: Polar charts for the horizontal electric fields during geomagnetic storms

Polar charts for the horizontal electric fields during the seven analysed storms, at the four locations in Figure 2 of Alves Ribeiro et al., 2021; histograms of the angular distribution of the horizontal electric field (right).