Results 51 to 60 of about 231 (130)

Geomagnetically Induced Currents, Transformer Harmonics, and Reactive Power Impacts: Observed Response of a Single‐Phase Transformer in New Zealand

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Geomagnetic storms represent a space weather hazard to power transmission networks due to the effects of induced geo‐electric fields within the conducting surface of the Earth. These drive electric currents in power transmission lines which can flow to ground through the neutral‐ground connections of transformers.
Xinhu Feng, C. J. Rodger, M. A. Clilverd, D. H. Mac Manus, Victor Lo, M. Dalzell, A. Renton, A. Lapthorn, J. B. Brundell, Tanja Petersen   +9 more
wiley   +1 more source

A Multi‐Scale Geophysical–Geochemical Footprint of Persistent Methane Leakage at a Legacy Petroleum Well

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Fugitive methane leakage from legacy oil and gas wells is assessed using surface flux and soil‐gas measurements, yet these signals are modulated by meteorology and shallow processes, obscuring sustained leakage. Whether persistent leakage leaves a coherent imprint in the shallow subsurface remains unresolved. Here we present a multi‐year field
Aaron G. Cahill, Benjamin Pullen, Cooper Pickering, Colby M. Steelman   +3 more
wiley   +1 more source

Integrated VES–ERI–MASW‐Geotechnical Investigation for Building Foundation Site Suitability at the Proposed Wachemo University Referral Hospital, Hosanna, Central Ethiopia

Engineering Reports, Volume 8, Issue 5, May 2026.
Integrated VES, ERI, and MASW surveys, constrained by boreholes, delineate a central low‐resistivity/low‐V s weak corridor and more competent volcanic strata at depth. The eastern sector offers preferable foundation conditions, while identified weak zones require ground improvement or deep foundations to mitigate differential‐settlement risk.
Alemayehu Ayele, Tamrat Eramo, Muralitharan Jothimani   +2 more
wiley   +1 more source

Mapping a Carrington Storm

Geophysical Research Letters
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.
Jeffrey J. Love, Greg M. Lucas, Anna Kelbert, E. Joshua Rigler, Paul A. Bedrosian, Neesha R. Schnepf   +5 more
doaj   +1 more source

Concurrent Oxidative and Reductive Protometabolic Reactions Driven by Electrochemistry

ChemSystemsChem, Volume 8, Issue 3, May 2026.
Electrochemistry offers a possible solution to a key question in prebiotic chemistry: how oxidative and reductive reactions could occur simultaneously as they do in modern biochemistry. This study shows that essential redox reactions from the reverse tricarboxylic acid (rTCA) cycle and nucleotide synthesis can be driven concurrently by electrochemistry,
Clara Vega, Morgan Regnier, Shunjiro Sodei, Grace Lowe, Timothy Noël, Joseph Moran   +5 more
wiley   +1 more source

Long‐Term Peak Geoelectric Field Behavior for Space Weather Hazard Assessment in Alberta, Canada Using Geomagnetic and Magnetotelluric Measurements

Space Weather
To better understand the risks of space weather to electric power transmission networks, magnetometer data and nearby magnetotelluric impedance data at four sites in Alberta, Canada are used to estimate the induced geoelectric field over the last 12–32 ...
Darcy Cordell, Ian R. Mann, Stavros Dimitrakoudis, Hannah Parry, Martyn J. Unsworth   +4 more
doaj   +1 more source

Three-dimensional geoelectric model of the Kirovograd ore area of the central part of the Ukrainian Shield

Геофизический журнал, 2013
The authors give their 3D geoelectric model of the Kirovohrad ore district and consider aspects related to the association of uranium manifestations of albitite formation, gold fields and manifestations of graphite with anomalies of increased electrical
I. Nikolaev, T.K. Burakhovich, E. Sheremet   +2 more
doaj   +1 more source

Geo-Electric Resistivity Method of Dipole-Dipole Configuration For Cavities Model 2D in Karst Area of Temurejo Village Gubug Sub-district Central Java District

Journal of Physics: Theories and Applications, 2017
The purpose of this research is to mapping cavities in karst area in Temurejo Village, Karangrayung, Grobogan using geoelectric resistivity method and dipole-dipole configuration.
Yuanna Rhesdeantia, Teguh Darsono, Khumaedi Khumaedi   +2 more
doaj   +1 more source

Geoelectric Field Estimations During Geomagnetic Storm in North China From SinoProbe Magnetotelluric Impedances

Space Weather
Evaluating the impact of geomagnetic disturbances on power grid infrastructure is critical to mitigate the risk posed by geomagnetically induced currents (GICs).
Qihe Shao, Ying Liu, Yinhe Luo, Graham Heinson, Yixian Xu, Jinsong Du, Chao Chen   +6 more
doaj   +1 more source

Recent geomagnetic storms observed by Macau Science Satellite-1

Earth and Planetary Physics
Geomagnetic storms are rapid disturbances of the Earth’s magnetosphere. They are related to many geophysical phenomena and have large influences on human activities.
Qing Yan, HongBo Yao
doaj   +1 more source