Results 11 to 20 of about 6,331 (210)

Geoelectric monitoring at the Boulder magnetic observatory [PDF]

Geoscientific 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, T. C. White, E. A. Sauter, D. C. Stewart, P. A. Bedrosian, J. J. Love   +5 more
doaj   +4 more sources

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

Earth, 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, Jeffrey J. Love, Andrei Swidinsky   +2 more
doaj   +2 more sources

Forecasting Geomagnetically Induced Currents From Solar Wind and Geoelectric Field Data Using Deep Learning: Application in Fujian, China

Space Weather
We developed a multi‐module convolutional neural network combined with a multi‐head attention mechanism (MM‐CNN‐MHA) to forecast geomagnetically induced currents (GICs) at the Huangmeishan (HMS) 220‐kV substation in Fujian Province, China.
Xuejian Zhang, Gilbert Pi, Wenxin Kong, Zikun Zhou, Sheng Li, Zdeněk Němeček, Jana Šafránková, Ye Fan, Nian Yu   +8 more
doaj   +2 more sources

Interference and changes in data characteristics of Luoci geoelectric observatory station in Yunnan Province [PDF]

地震科学进展
The observation data from the Luoci geoelectric observatory station were studied. The main sources of data interference were identified and analyzed using the observation data from a geoelectric observatory station.
Xin Xiao, Runhai Yang, Jianming Shi, Linlan Wang, Yu Li   +4 more
doaj   +2 more sources

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

, 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, Szalai, Sándor, L. Szarka, S. Szalai   +3 more
core   +2 more sources

Defining a geoelectric index [PDF]

Defining a geoelectric index
P(論文) In recent years (at least since 1978) a possible definition of a geoelectric index has been frequently discussed. This index, derived from experimental data, should give a useful description of the electrical state of the atmosphere to be referred to when dealing with various related studies.
Iversen, I.B.
openaire   +2 more sources

Classification of Surface Geoelectric Arrays [PDF]

, 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

Geolectric field measurement, modelling and validation during geomagnetic storms in the UK

Journal of Space Weather and Space Climate, 2021
Significant geoelectric fields are produced by the interaction of rapidly varying magnetic fields with the conductive Earth, particularly during intense geomagnetic activity.
Beggan Ciarán D., Richardson Gemma S., Baillie Orsi, Hübert Juliane, Thomson Alan W. P.   +4 more
doaj   +1 more source

Influence of natural and anthropogenic factors on the hydrogeology and hydrogeochemistry of Wadi Itwad Aquifer, Saudi Arabia: Assessment using multivariate statistics and PMWIN simulation

Ecological Indicators, 2023
The quantity and quality of the aquifers have been depleted by human activities such as industrialization, the use of fertilizers, excessive pumping, and the discharge of domestic wastewater.
Mohd Yawar Ali Khan, Mohamed ElKashouty, Ayman Abdellattif, Johnbosco C. Egbueri, Ayman I Taha, Mohamed Al Deep, Fathy Shaaban   +6 more
doaj   +1 more source

Identifikasi Gugus SiHx (x=1, 2 dan 3) pada Silikon Berpori dari Substrat Si (111) Tipe-P

Jurnal Fisika Flux, 2017
The study of identification of functional group SiHx (x=1, 2, 3) to typep Si (111) made by anodizatied silicon wafer in 0,3 ohm-cm hydrofluoric (HF) has been conducted.
I Nyoman Sudiana
doaj   +3 more sources