Results 61 to 70 of about 1,531 (194)
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 +6 more
wiley +1 more source
Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil
Meteoritics &Planetary Science, EarlyView.Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos +5 more
wiley +1 more source
The Gannon Storm's Impact on Electric and Magnetic Fields in Italy: A Regional Perspective
Space WeatherThe intense May 2024 geomagnetic storm provided an opportunity to conduct the first analysis of geoelectric hazards in Italy. Data from three geomagnetic observatories and a magnetotelluric station were analyzed to examine the spatiotemporal evolution of
Giulia Pignatiello +5 more
doaj +1 more source
Dizhen xuebao, 2023 提出长短极距比值干扰源定位方法用来定位地电观测中出现的地表干扰源。该方法基于均匀半空间模型且地表干扰为点电源，利用地表不同位置的干扰源所引起的同测向长短极距的电场变化差异，联合多测向比值来定位干扰源位置，并应用到徐庄子台漏电干扰一例和高邮台偶极源试验中。结果表明：利用长短极距比值法，能有效定位干扰点源，且能定位偶极干扰源的其中一个电极。
Jieyu Tan, Lanping Li, Junsong Sun
doaj +1 more source
Water Resources Research, Volume 62, Issue 7, July 2026.Abstract Capillary pressure‐saturation relationships are crucial for geo‐energy recovery, and increasingly, for environmental applications. However, for reservoir‐relevant pressure and temperature conditions, only limited data sets are available from special core analysis in laboratory (SCAL) studies.
Juliane Kummerow +2 more
wiley +1 more source
An Approximate Time‐Domain Solution for Recharge Propagation Through Thick Unsaturated Zones
Hydrological Processes, Volume 40, Issue 6, June 2026.This study presents a time‐domain analytical solution for modelling groundwater recharge through thick unsaturated zones, applied to the Urucuia aquifer in Brazil. The model was calibrated using observed well data, capturing the attenuation of seasonal groundwater level fluctuations with depth.
Caio Leão +2 more
wiley +1 more source
Factor analysis of multi−electrode geoelectric field data
, 2022 The paper presents the results of the factor analysis of multi-electrode geoelectric data measured in the area of the Surány aquifer. The 9-variable dataset measured on the first profile was examined by factor analysis using 2, 3, 4 and 5 factors.
Szabó, Norbert Péter +1 more
core +1 more source
Comparison of instruments for geoelectrical soil mapping at the field scale [PDF]
Near Surface Geophysics, 2009 In precision agriculture geoelectrical methods have shown their capability to detect spatial variation of important physico‐chemical soil parameters in an efficient way. Nevertheless, relationships between the electrical parameters (electrical conductivity or resistivity) and other soil properties are not always consistent over different fields.
Gebbers, Robin +3 more
openaire +2 more sources
The United States Magnetotelluric Array and the National Impedance Map
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract The United States Magnetotelluric Array (USMTArray) data set, collected in the years 2006–2024, consists of more than 1,700 long‐period magnetotelluric stations covering the entirety of the contiguous United States on a quasi‐regular 70 km grid.
Anna Kelbert +7 more
wiley +1 more source
Geomagnetically induced currents in Norway: the northernmost high-voltage power grid in the world
Journal of Space Weather and Space Climate, 2014 We have derived comprehensive statistics of geomagnetic activity for assessing the occurrence of geomagnetically induced currents (GIC) in the Norwegian high-voltage power grid.
Myllys Minna +3 more
doaj +1 more source