Results 91 to 100 of about 9,282,579 (236)

Modeling and Risk Assessment of Geomagnetically Induced Currents During Geomagnetic Storm in the 500 kV Power Grid of Guangxi, China

Space Weather, Volume 23, Issue 11, November 2025.
Abstract Geomagnetic storms can induce geomagnetically induced currents (GIC) in power systems, posing threats to grid security. In this study, a GIC calculation model for the 500 kV power grid in Guangxi, China, is developed based on one‐dimensional (1D) and various three‐dimensional (3D) magnetotelluric (MT) impedance data.
Xuejian Zhang, Gilbert Pi, Zdeněk Němeček, Jana Šafránková, Tianqi Wang, Wenxin Kong, Chang Wei, Nian Yu   +7 more
wiley   +1 more source

Influence of spatial variations of the geoelectric field on geomagnetically induced currents

, 2017
The geoelectric field driving geomagnetically induced currents (GIC) has complex spatial variations. It follows that different patterns of the field vectors in a given area having the same regional mean can produce very different GIC.
A. Viljanen, R. Pirjola
semanticscholar   +1 more source

Influence of Hydraulic Conductivity Conceptualization and Unsaturated Flow Parameters for an Integrated Hydrological Model

Water Resources Research, Volume 61, Issue 11, November 2025.
Abstract In recent decades, integrated hydrologic models (IHMs) have advanced our understanding of hydrologic processes across catchment to continental scales. These models couple surface and variably saturated subsurface flow, incorporating land surface models to represent interactions within the critical zone. However, high computational costs hinder
Edinsson Muñoz‐Vega, Heye Reemt Bogena, Juan Carlos Richard‐Cerda, Reed M. Maxwell, Stephan Schulz   +4 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

Using geoelectric field skewness and kurtosis to forecast the 2016/2/6, ML 6.6 Meinong, Taiwan Earthquake

, 2017
The earthquake-alarm model developed by Chen and Chen (Nat. Hazards 2016) is investigated to validate its forecasting performance for the 2016/2/6, ML 6.6 Meinong, Taiwan earthquake.
Hong-Jia Chen, Chien-Chih Chen, G. Ouillon, D. Sornette   +3 more
semanticscholar   +1 more source

Linking Very Near‐Earth Reconnection (VNERX) to Mid‐Latitude GICs: Evidence From the 7 September 2017 Storm

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Geomagnetically Induced Currents (GICs) are a hazard to power systems. In this letter, we present a case study to understand why a Sudden‐Commencement‐associated 20A GIC spike, measured at mid‐latitude in Virginia, US, increased to 30A within 2 min of interplanetary shock arrival.
Bhagyashree Waghule, Delores J. Knipp, Grant K. Stephens, David M. Malaspina   +3 more
wiley   +1 more source

Geoelectric field modeling for GIC risk assessment in Germany

, 2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Pick, L., Grayver, A., Guimarães Carvalho, A., Berdermann, J.   +3 more
openaire   +2 more sources

Mapping a Carrington Storm

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract A map is presented of median 1‐min‐resolution peak geoelectric‐field strength across the United States as would be induced by magnetic storms as intense as the 2 September 1859 Carrington storm. The map is constructed from two data sets: Magnetometer time series from 22 ground‐based observatories recording 40 magnetic storms, and surface ...
Jeffrey J. Love, Greg M. Lucas, Anna Kelbert, E. Joshua Rigler, Paul A. Bedrosian, Neesha R. Schnepf   +5 more
wiley   +1 more source

Influences of various magnetospheric and ionospheric current systems on geomagnetically induced currents around the world [PDF]

, 2017
Ground-based observations of geomagnetic field (B field) are usually a superposition of signatures from different source current systems in the magnetosphere and ionosphere.
Amm, Anderson, Anderson, Barbosa, Baumjohann, Beland, Bostrom, Boteler, Boteler, Cagniard, Carter, Civet, Danskin, De Villiers, De Villiers, Egedal, Gannon, Gaunt, Gilbert, Häkkinen, Iyemori, J. S. de Villiers, Kappenman, Kerridge, Kozyra, Liu, Lourakis, Love, M. Kosch, Marshall, Ngwira, Omondi, Onwumechili, Owen, Pirjola, Pirjola, Pirjola, Pirjola, Pirjola, Pirjola, Press, Pulkkinen, Pulkkinen, Pulkkinen, Richmond, S. Lotz, Schwarz, Sugiura, Thomson, Thomson, Thomson, Torta, Trivedi, Uozumi, Vanhamäki, Vanhamäki, Viljanen, Wait, Wait, Wait, Wanliss, Watari, Watari, Wik, Y. Yamazaki, Zhang   +65 more
core   +1 more source

Structure of the Multiphase Chalcolithic Tell Chiselet–Grădiștea Fundeanca (Romania) From SH‐Wave Full‐Waveform Inversion, Borehole Geophysics and Coring

Archaeological Prospection, Volume 32, Issue 4, Page 899-926, October/December 2025.
ABSTRACT The emergence and development of settlement mounds, also called tells, is of major interest for the analysis of socio‐economic transformations occurring in the lower Danube plain during the East European Chalcolithic period. In this context, the multiphase chronology and structural layout of tells are highly relevant indicators, but small ...
Manuel Zolchow, Daniel Köhn, Natalie Pickartz, Martin Thorwart, Adrian Serbanescu, Ercan Erkul, Dennis Wilken, Stefan Dreibrodt, Robert Hofmann, Johannes Müller, Catalin Lazar, Wolfgang Rabbel   +11 more
wiley   +1 more source