Results 41 to 50 of about 4,199 (222)

Notes on geoelectrics

open access: yesGeofizicheskiy Zhurnal, 2012
Unlike practical science - electrical prospecting, geoelectrics is regarded as a fundamental science, which sets the task of an honest, reliable study of the objective reality - the Earth. Since observation of electromagnetic fields is possible only on/above the Earth in a limited number of sites with limited accuracy, the conclusions of geoelectrics ...
openaire   +4 more sources

Geoelectric hazard assessment: the differences of geoelectric responses during magnetic storms within common physiographic zones

open access: yes, 2018
Geomagnetic field data obtained through the INTERMAGNET program are convolved with with magnetotelluric surface impedance from four EarthScope USArray sites to estimate the geoelectric variations throughout the duration of a magnetic storm. A duration of
Andrei Swidinsky   +2 more
core   +1 more source

A paradigm for developing earthquake probability forecasts based on geoelectric data

open access: yes, 2021
We examine the precursory behavior of geoelectric signals before large earthquakes by means of a previously published algorithm including an alarm-based model and binary classification [H.-J. Chen, C.-C. Chen, Nat. Hazards 84, 877 (2016)].
Didier Sornette   +3 more
core   +1 more source

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

open access: yesNear 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   +6 more
wiley   +1 more source

Geoelectric Method Implementation in Measuring Area Groundwater Potential: A Case Study in Barru Regency

open access: yes, 2020
Geoelectric measurements to detect the presence of groundwater aquifers in the study area by knowing the type of lithology, distribution, thickness, and depth of rock layers carrying groundwater (aquifer), both vertically and laterally.
Falah, Muh. Darwis
core   +1 more source

Application of phase-metric compensation method for geoelectric control of near-surface geodynamic processes [PDF]

open access: yes, 2020
This work is devoted to the application of the compensation method of geoelectric control using the field phase characteristics for the detection and localization of geodynamic processes.
Baknin, M. D.   +4 more
core   +1 more source

Maps of geoelectric sections of Turkey, Iran, Afghanistan, Pakistan, Korea, and Japan [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2008
Results of geoelectric mapping of some Asian countries with high seismic activity are presented. The methodology of the geoelectric mapping is considered, and the corresponding maps of geoelectric sections of Turkey, Iran, Afghanistan, Pakistan, Korea ...
Y. B. Bashkuev   +4 more
doaj  

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

open access: yesPermafrost 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   +2 more
wiley   +1 more source

Bayesian Inversion of Geoelectrical Resistivity Data [PDF]

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 2003
SummaryEnormous quantities of geoelectrical data are produced daily and often used for large scale reservoir modelling. To interpret these data requires reliable and efficient inversion methods which adequately incorporate prior information and use realistically complex modelling structures.
Andersen, Kim Emil   +2 more
openaire   +2 more sources

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

open access: yesPermafrost 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   +6 more
wiley   +1 more source

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