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View article: Data‐Driven Transfer Functions From Differential Magnetometer Measurements to Enhance GIC Model Validation Capability: A Case Study in the Spanish Power Grid
Data‐Driven Transfer Functions From Differential Magnetometer Measurements to Enhance GIC Model Validation Capability: A Case Study in the Spanish Power Grid Open
Geomagnetically induced currents (GICs) are unwanted currents flowing in long grounded conductors because of space weather phenomena. Example GICs are those flowing in power transmission lines via grounded transformer neutrals. Prediction …
View article: Estimation of the high amplitudes of the geoelectric field
Estimation of the high amplitudes of the geoelectric field Open
The geoelectric field depends on the electrical structure of the ground and the time variations of the geomagnetic field, which become more intense during geomagnetic storms. We present a procedure for identifying the areas of higher ampli…
View article: Exploring temporal and spatial dynamics of fresh submarine groundwater discharge: amphibious electrical resistivity tomography in the land-ocean transition zone
Exploring temporal and spatial dynamics of fresh submarine groundwater discharge: amphibious electrical resistivity tomography in the land-ocean transition zone Open
Submarine groundwater discharge (SGD) is a complex hydrological process influenced by multiple mechanisms with various spatiotemporal scales. Quantifying SGD is complex because it depends on various driving forces (e.g., waves, tides, hydr…
View article: Magnetotelluric applied to deep geothermal exploration: Canary Islands
Magnetotelluric applied to deep geothermal exploration: Canary Islands Open
There is currently a growing interest in geothermal energy. Geothermal energy for electricity generation usually corresponds to deep reservoirs, located deeper than one kilometer. This will condition the geophysical methods to be used duri…
View article: Volcanic monitoring of the 2021 La Palma eruption using long-period magnetotelluric data
Volcanic monitoring of the 2021 La Palma eruption using long-period magnetotelluric data Open
Between September and December 2021, the first subaerial volcanic eruption in the Canary Islands in 50 years took place on the island of La Palma. Since November 2021, we have been conducting a long-period magnetotelluric (MT) monitoring e…
View article: High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data Open
The Pyrenees have undergone complex geodynamic evolution starting with experiencing significant tectonic events during the Variscan Orogeny, followed by the intrusion of large granitic complexes during the late Variscan stage, then the col…
View article: Expected Geomagnetically Induced Currents in the Spanish Islands Power Transmission Grids
Expected Geomagnetically Induced Currents in the Spanish Islands Power Transmission Grids Open
The aim of this study is to evaluate the geomagnetically induced current (GIC) hazard in the power networks of the Canary and Balearic archipelagos. This is done in order to strictly complete the detailed assessment at national level of th…
View article: Combining terrestrial and marine electrical resistivity methods to improve data acquisition in the land-sea transition zone.
Combining terrestrial and marine electrical resistivity methods to improve data acquisition in the land-sea transition zone. Open
In recent decades, there has been a growing interest in accurately characterizing the process of fresh groundwater discharge into the coastal ocean since it represents a significant pathway for solute from land to sea. Although SGD researc…
View article: Using continuous resistivity profiling (CRP) method to identify electrical resistivity variations related to FSGD areas.
Using continuous resistivity profiling (CRP) method to identify electrical resistivity variations related to FSGD areas. Open
<p>The characterization of fresh submarine groundwater discharge (FSGD) in coastal aquifers has been the object of study in many investigations due to the importance of water as a strategic resource for populations. However, investig…
View article: Els Casots (Subirats, Catalonia), a key site for the Miocene vertebrate record of Southwestern Europe
Els Casots (Subirats, Catalonia), a key site for the Miocene vertebrate record of Southwestern Europe Open
Els Casots is one of the richest fossil vertebrate sites of the Vallès-Penedès Basin (Catalonia, Spain). It was discovered in 1989 and excavated briefly during the 1990s, resulting in the recovery of thousands of remains and the erection o…
View article: Validating GIC Modeling in the Spanish Power Grid by Differential Magnetometry
Validating GIC Modeling in the Spanish Power Grid by Differential Magnetometry Open
A series of experiences and recommendations are presented concerning the derivation of geomagnetically induced currents (GIC) by use of the differential magnetometry method (DMM) under power lines. This indirect technique, intended to obta…
View article: 3D magnetotelluric modeling using high-order tetrahedral Nédélec elementson massively parallel computing platforms
3D magnetotelluric modeling using high-order tetrahedral Nédélec elementson massively parallel computing platforms Open
Accompanying data to journal article Castillo-Reyes, O., Modesto, D., Queralt, P., Marcuello, A., Ledo, J., Amor-Martin, A., de la Puente, J., García-Castillo, L.E. (2021) 3D magnetotelluric modeling using high-order tetrahedral Nédélec el…
View article: 3D magnetotelluric modeling using high-order tetrahedral Nédélec elementson massively parallel computing platforms
3D magnetotelluric modeling using high-order tetrahedral Nédélec elementson massively parallel computing platforms Open
Accompanying data to journal article Castillo-Reyes, O., Modesto, D., Queralt, P., Marcuello, A., Ledo, J., Amor-Martin, A., de la Puente, J., García-Castillo, L.E. (2021) 3D magnetotelluric modeling using high-order tetrahedral Nédélec el…
View article: 3D magnetotelluric modeling using high-order tetrahedral Nédélec elementson massively parallel computing platforms
3D magnetotelluric modeling using high-order tetrahedral Nédélec elementson massively parallel computing platforms Open
Accompanying data to journal article Castillo-Reyes, O., Modesto, D., Queralt, P., Marcuello, A., Ledo, J., Amor-Martin, A., de la Puente, J., García-Castillo, L.E. (2021) 3D magnetotelluric modeling using high-order tetrahedral Nédélec el…
View article: 3D magnetotelluric modeling using high-order tetrahedral Nédélec elementson massively parallel computing platforms
3D magnetotelluric modeling using high-order tetrahedral Nédélec elementson massively parallel computing platforms Open
Accompanying data to journal article Castillo-Reyes, O., Modesto, D., Queralt, P., Marcuello, A., Ledo, J., Amor-Martin, A., de la Puente, J., García-Castillo, L.E. (2021) 3D magnetotelluric modeling using high-order tetrahedral Nédélec el…
View article: New Detailed Modeling of GICs in the Spanish Power Transmission Grid
New Detailed Modeling of GICs in the Spanish Power Transmission Grid Open
The threat of Geomagnetically Induced Currents (GICs) driven by severe Space Weather looms over technological systems such as power grids. Assessing their vulnerability is thus vital to avoid damages or even disruption of the electrical po…
View article: Mesozoic structural inheritance in the Cenozoic evolution of the central Catalan Coastal Ranges (western Mediterranean): Structural and magnetotelluric analysis in the Gaià-Montmell High
Mesozoic structural inheritance in the Cenozoic evolution of the central Catalan Coastal Ranges (western Mediterranean): Structural and magnetotelluric analysis in the Gaià-Montmell High Open
The control exerted by the Mesozoic basin configuration on the Cenozoic tectonic evolution of the Catalan Coastal Ranges has been frequently recognized as a key factor to explain its present-day structure.However, details of this structura…
View article: Land CSEM Simulations and Experimental Test Using Metallic Casing in a Geothermal Exploration Context: Vallès Basin (NE Spain) Case Study
Land CSEM Simulations and Experimental Test Using Metallic Casing in a Geothermal Exploration Context: Vallès Basin (NE Spain) Case Study Open
Controlled-source electromagnetic (CSEM) measurements are complementary data for magnetotelluric (MT) characterization although its methodology on land is not sufficiently developed and tested as in marine environments. Acquiring expertise…
View article: Validating GIC modelling in the Spanish power grid by differential magnetometry
Validating GIC modelling in the Spanish power grid by differential magnetometry Open
<p>A series of experiences and recommendations are presented concerning the measurement of geomagnetically induced currents (GIC) in the Spanish power transmission grid by use of the method of differential magnetometry under power li…
View article: Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain)
Integrated seismic ambient noise, magnetotellurics and gravity data for the 2D interpretation of the Vallès basin structure in the geothermal system of La Garriga-Samalús (NE Spain) Open
The integration of geophysical methods, together with the previous information of the Vallès basin area, has resulted in the creation of a new conceptual model that explains La Garriga-Samalús geothermal system. The integration of compleme…
View article: Validating GIC modelling in the Spanish power grid by differential magnetometry [Dataset]
Validating GIC modelling in the Spanish power grid by differential magnetometry [Dataset] Open
Data files with magetic data from Differential Magnetometry Method (DMM) sites to monitor Geomagnetically Induced Currents (GIC) flowing in power transmission lines. Four sites, two magnetometers per site (one under power line; another act…
View article: Time-lapse cross-hole electrical resistivity tomography (CHERT) for monitoring seawater intrusion dynamics in a Mediterranean aquifer
Time-lapse cross-hole electrical resistivity tomography (CHERT) for monitoring seawater intrusion dynamics in a Mediterranean aquifer Open
Surface electrical resistivity tomography (ERT) is a widely used tool to study seawater intrusion (SWI). It is noninvasive and offers a high spatial coverage at a low cost, but its imaging capabilities are strongly affected by decreasing r…