Results 21 to 30 of about 231 (130)

Benchmarking the Swedish Power Grid Against a 1-in-100-Year Geoelectric Field Scenario [PDF]

Annales Geophysicae
Sweden’s communication and power systems have been impacted by major space weather events in the past. For instance, the May 1921 storm caused a fire at the telegraph and telephone station in Karlstad, and the 2003 Halloween storm led to a blackout in ...
V. Lanabere, A. P. Dimmock, S. Molenkamp Venholen, A. V. L. Wallner, A. V. L. Wallner, A. Johlander, L. Rosenqvist, J. Setréus   +7 more
doaj   +1 more source

The March 1940 Superstorm: Geoelectromagnetic Hazards and Impacts on American Communication and Power Systems

Space Weather, 2023
An analysis is made of geophysical records of the 24 March 1940, magnetic storm and related reports of interference on long‐line communication and power systems across the contiguous United States and, to a lesser extent, Canada.
Jeffrey J. Love, E. Joshua Rigler, Michael D. Hartinger, Greg M. Lucas, Anna Kelbert, Paul A. Bedrosian   +5 more
doaj   +1 more source

3D effects of seawater on electrical resistivity tomography near shorelines—Challenges and possible solutions inferred from synthetic and field data

Near Surface Geophysics, EarlyView.
Abstract Electrical resistivity tomography (ERT) is one of the most widely used geophysical techniques for hydrogeological questions, such as investigating the groundwater transition zone between land and sea. The interpretation of 2D coast‐parallel ERT profiles is challenging because most of the electrical current flows through the highly conductive ...
Simon Levin Fischer, Ercan Erkul, Jasper Justus Lutz Hoffmann, Şerif Barış, Ertan Pekşen, İsmail Kaplanvural, Wolfgang Rabbel   +6 more
wiley   +1 more source

Estimating Geomagnetically Induced Currents in Southern Brazil Using 3‐D Earth Resistivity Model

Space Weather, 2023
Geomagnetically induced currents (GICs) result from the interaction of the time variation of ground magnetic field during a geomagnetic disturbance with the Earth's deep electrical resistivity structure.
Karen V. Espinosa, Antonio L. Padilha, Livia R. Alves, Adam Schultz, Anna Kelbert   +4 more
doaj   +1 more source

Capturing the Multi‐Decadal Evolution of Glacier–Permafrost Interactions in a High‐Alpine Environment (Ritord, Western Swiss Alps)

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT This study investigates the multi‐decadal evolution of a glacier forefield under permafrost conditions in the Combins Massif (western Swiss Alps). A multi‐method approach based on historical and recent datasets is used to analyze its landform components.
Julie Wee, Hanne Hendrickx, Sebastián Vivero   +2 more
wiley   +1 more source

The Effect of Tidal Geoelectric Fields on GIC and PSP in Buried Pipelines

IEEE Access, 2019
Compared with the investigation of geomagnetically induced currents (GIC) in power grids, there is less study about the effect of geomagnetic disturbance (GMD) on buried oil and gas pipelines in mid-low latitude areas, which includes GIC and pipe-to-soil
Lianguang Liu, Zebang Yu, Xuan Wang, Wenlin Liu   +3 more
doaj   +1 more source

“Cold Tropics”: Permafrost Existence and Thickness on Eastern Nevado Coropuna (Southern Peruvian Andes) Revealed by Ground‐Penetrating Radar and Geoelectrical Soundings

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The existence of permafrost was explored at tropical latitude on Nevado Coropuna (southern Peruvian Andes) using a combination of ground‐penetrating radar (GPR) and vertical electrical sounding (VES) in order to strengthen the mutual validation of data processing and interpretation.
Velnia Chacca, Ramón Pellitero, Adriano Ribolini, José Úbeda, Luis Mariano del Río, Ricardo Vila, Oscar Vilca   +6 more
wiley   +1 more source

Geophysical Frequency Domain Electromagnetic Field Simulation Using Physics-Informed Neural Network

Mathematics
Simulating electromagnetic (EM) fields can obtain the EM responses of geoelectric models at different times and spaces, which helps to explain the dynamic process of EM wave propagation underground.
Bochen Wang, Zhenwei Guo, Jianxin Liu, Yanyi Wang, Fansheng Xiong   +4 more
doaj   +1 more source

REPRODUCING OPERATIONAL LANDSCAPES: The Rock Mining for Indonesia's New Capital City

International Journal of Urban and Regional Research, EarlyView.
Abstract Indonesia's new capital city is designed to become a green and sustainable city. In this article, we examine the (un)sustainability of the process through which the city is coming into being. Using the sociospatial theory of planetary urbanization, we trace the dialectical relationship between the new city and sites beyond it to show how ...
Bosman Batubara, Kei Otsuki, Femke Van Noorloos, Michelle Kooy, Annelies Zoomers   +4 more
wiley   +1 more source

Imaging Point Source Groundwater Discharges in a Confined Coastal Aquifer Using Electrical Resistivity

Groundwater, EarlyView.
Marine electrical resistivity tomography (ERT) is applied to characterize point‐source submarine groundwater discharge (PSGD) along NW Yucatán. ERT observations and forward modeling constrain conduit detectability under varying hydrogeological conditions.
Mariana Gómez‐Nicolás, Armando Huitzilt‐Rodriguez, Enrique Iñiguez, Roger Pacheco‐Castro, Marco Pérez‐Flores, Paulo Salles, Fiona Whitaker   +6 more
wiley   +1 more source