Results 21 to 30 of about 652,381 (186)

Unified Geomagnetic Database from Different Observation Networks for Geomagnetic Hazard Assessment Tasks

open access: yesData Science Journal, 2020
This paper presents the results of the creation of a geomagnetic data storage system that combines raw observation data from different geomagnetic observation networks along with derived indices and indicators of geomagnetic activity.
Michael Dobrovolsky   +2 more
doaj   +1 more source

Comparison between indices during geomagnetic disturbances [PDF]

open access: yesGeofísica Internacional, 2004
Auroral indices AE, AU, AL, and Troshichev index from Thule, PC (Polar Cap) are compared for geomagnetic disturbances of different intensities. To identify perturbations, the indices Dst and AE have been used. Fourteen storms have been analyzed, with Dst
Marta Zossi de Artigas   +1 more
doaj   +3 more sources

Mid-latitude Geomagnetic Indices ASY and SYM (ASY/SYM Indices)

open access: yes, 2022
【Update frequency】Indices of the previous month are added once a month.【Observatory Location】[San Juan]geographic latitude: 18.110geographic longitude: 293.850[Fredericksburg]geographic latitude: 38.200geographic longitude: 282.630[Boulder]geographic ...
Iyemori, Toshihiko   +4 more
core   +1 more source

Deep Neural Networks With Convolutional and LSTM Layers for SYM‐H and ASY‐H Forecasting

open access: yesSpace Weather, 2021
Geomagnetic indices quantify the disturbance caused by the solar activity on a planetary scale or in particular regions of the Earth. Among them, the SYM‐H and ASY‐H indices represent the (longitudinally) symmetric and asymmetric geomagnetic disturbance ...
Armando Collado‐Villaverde   +2 more
doaj   +1 more source

A Detection Study of the Ionospheric Total Electron Contents Variations Using GPS Network [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2007
We established a regional ionospheric model for investigating ionospheric TEC (Total Electron Contents) variations over the Korean Peninsula during major geomagnetic storms.
Byung-Kyu Choi   +2 more
doaj   +1 more source

New international service of geomagnetic indices' web site

open access: yes, 2015
International audienceThe International Service of Geomagnetic Indices (ISGI) is in charge of the elaboration and dissemination of IAGA endorsed geomagnetic indices and lists of remarkable magnetic events.This is possible thanks to reports of magnetic ...
Mendel, Véronique   +6 more
core   +5 more sources

The behavior of solar wind parameters and geomagnetic activity indices for geomagnetically induced current observations

open access: yes, 2018
The main objective of the current work is to  investigate the behavior of space weather parameter as well as geomagnetic activity indices to observe the Geomagnetically Induced Current (GIC).
Abdullah Din, A.N.F.   +5 more
core   +3 more sources

On extreme geomagnetic storms

open access: yesJournal of Space Weather and Space Climate, 2014
Extreme geomagnetic storms are considered as one of the major natural hazards for technology-dependent society. Geomagnetic field disturbances can disrupt the operation of critical infrastructures relying on space-based assets, and can also result in ...
Cid Consuelo   +4 more
doaj   +1 more source

Geomagnetic disturbances analysis using discrete wavelets [PDF]

open access: yesGeofísica Internacional, 2008
To assess long-term trends and periodicities in geomagnetic storms, the discrete wavelet transform, using the Daubechies function, was applied. Among a variety of techniques, which are available for analyzing variability, wavelet analysis has emerged in ...
E. M. Zotto   +2 more
doaj  

Front Matter

open access: yesGeophysical Monograph Series, Page i-xiv., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
wiley  

+1 more source

Home - About - Disclaimer - Privacy