Results 11 to 20 of about 7,095,631 (100)

Geoelectric monitoring at the Boulder magnetic observatory [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2017
Despite its importance to a range of applied and fundamental studies, and obvious parallels to a robust network of magnetic-field observatories, long-term geoelectric field monitoring is rarely performed.
C. C. Blum   +5 more
doaj   +4 more sources

Analysis of Large Geomagnetically Induced Currents During the 7–8 September 2017 Storm: Geoelectric Field Mapping

open access: yesSpace Weather, 2023
High temporal and high spatial resolution geoelectric field models of two Mäntsälä, Finnish pipeline geomagnetically induced current (GIC) intervals that occurred within the 7–8 September 2017 geomagnetic storm have been made.
Anna Wawrzaszek   +4 more
doaj   +2 more sources

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

open access: yesEarth, Planets and Space, 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
Stephen W. Cuttler   +2 more
doaj   +2 more sources

Investigation of the characteristics of geoelectric field signals prior to earthquakes using adaptive STFT techniques [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2013
An earthquake is one of the most destructive natural disasters that can occur, often killing many people and causing large material losses. Hence, the ability to predict earthquakes may reduce the catastrophic effects caused by this phenomenon.
W. Astuti   +4 more
doaj   +3 more sources

Nowcasting geoelectric fields in Ireland using magnetotelluric transfer functions [PDF]

open access: yesJournal of Space Weather and Space Climate, 2023
Geomagnetically induced currents (GIC) driven by geoelectric fields pose a hazard to ground-based infrastructure, such as power grids and pipelines. Here, a new method is presented for modelling geoelectric fields in near real time, to provide valuable ...
Malone-Leigh John   +5 more
doaj   +3 more sources

Historical data of geoelectric field observations in Japan

open access: yesGeoscience Data Journal, 2023
The Kakioka Magnetic Observatory (KMO) of the Japan Meteorological Agency (JMA) made geoelectric field observations at Kakioka, Memambetsu and Kanoya from 1932, 1949 and 1948, respectively, until February 2021, when observations at all three sites were ...
Shingo Nagamachi   +2 more
doaj   +2 more sources

Data analysis before and after the transformation of Yuanmou Julin geoelectric field [PDF]

open access: yes地震科学进展
Taking the geoelectric field observation data of Yuanmou Julin of Chuxiong Earthquake Monitoring Center Station as the research object, combined with the ideas and specific contents of the two transformations since the geoelectric field observation,the ...
Xin Xiao   +4 more
doaj   +2 more sources

Characteristics and Sources of Intense Geoelectric Fields in the United States: Comparative Analysis of Multiple Geomagnetic Storms

open access: yesSpace Weather, 2022
Intense geoelectric fields during geomagnetic storms drive geomagnetically induced currents in power grids and other infrastructure, yet there are limited direct measurements of these storm‐time geoelectric fields.
Xueling Shi   +6 more
doaj   +1 more source

Classification of Surface Geoelectric Arrays [PDF]

open access: yes, 2007
We have found in the geophysical literature more than ninety different surface geoelectric arrays, fulfilling an updated definition (specifying the current feeding, the potential difference measurement and the geometry of the electrodes).
Szarka, László Csaba, Szalai, Sándor
core   +2 more sources

Auxiliary Results of Collection and Classification of Surface Geoelectric Arrays [PDF]

open access: yes, 2007
Recently, we have made a classification of more than one hundred various surface geoelectric arrays ever published in geophysical literature (Szalai and Szarka 2007a, 2007b). The classification is based on three divalent parameters (as “superposition” of
Szarka, László Csaba   +3 more
core   +2 more sources

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