Results 11 to 20 of about 16,469 (214)

Geomagnetic disturbances analysis using discrete wavelets [PDF]

open access: yesGeofísica Internacional, 2008
Para estudiar periodicidades y tendencia en tormentas geomagnéticas se aplicó la transformada wavelet discreta, usando la función Daubechies. De entre una variedad de técnicas disponibles para analizar variabilidad, el análisis wavelets ha surgido en la ...
M. Zossi de Artigas   +2 more
doaj   +5 more sources

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   +5 more sources

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+2 more sources

The administrator, teachers and parents involvement in preschool during Movement Control Order [PDF]

open access: yes, 2021
The Covid-19 pandemic is affecting the whole education system including the preschoolers in Malaysia in receiving a proper teaching and learning lesson especially in the classroom. Movement Control Order (MCO) implemented by the government has restricted
Halim, Harliana, Senin, Muhammad Adam
core   +1 more source

Characteristics of the coseismic geomagnetic disturbances recorded during the 2008 Mw 7.9 Wenchuan Earthquake and two unexplained problems

open access: yesEarth and Planetary Physics, 2019
Twenty-seven FHDZ-M15 combined geomagnetic observation systems (each of which is equipped with a fluxgate magnetometer and a proton magnetometer) had been installed in the China geomagnetic network before the 2008 Wenchuan earthquake, during which ...
YaLi Wang   +7 more
doaj   +1 more source

Assessment of the Impact of Geomagnetic Disturbances on Korean Electric Power Systems

open access: yesEnergies, 2018
Geomagnetic disturbances have the potential to impact the operation of electric power systems, and thus the assessment of their impacts is required as the first step for secure power system operations.
Byoung-Soo Joo   +6 more
doaj   +1 more source

Superposed Epoch Analyses of Geoelectric Field Disturbances in Japan in Response to Different Geomagnetic Activities

open access: yesSpace Weather, 2022
An increase in geomagnetically induced currents (GICs) is an inevitable result of geomagnetic field disturbances, and is harmful to the power grid, in particular, at high latitudes.
T. Zhang, Y. Ebihara
doaj   +1 more source

Large-scale geomagnetic field disturbances accompanied by the powerful explosion of the Tonga volcano on January 15, 2022.

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2022
Background. A number of authors have described the results of observations of variations in the geomagnetic field caused by the Tonga volcano explosion.
L. F. Chernogor, M. Yu. Holub
doaj   +1 more source

A NEURAL NETWORK SYSTEM FOR ESTIMATION OF THE GEOMAGNETIC FIELD DISTURBANCE [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016
The paper presents our software system for estimation the degree of disturbance of the geomagnetic field. The system automatically classifies registered geomagnetic data and determines the state of the geomagnetic field for the current day.
Mandrikova O.V., Zhizhikina E. A.
doaj   +2 more sources

Geomagnetic disturbances and coronal rays [PDF]

open access: yesProceedings of the International Astronomical Union, 2004
The cause of 92 geomagnetic disturbances in the period of 1997 – 2003 was analyzed. There were used data from LASCO C3 instrument from SOHO satellite, SOHO LASCO CME Catatalog, and the daily average indices Ap. In this contribution we proposed to search sources of the geomagnetic storms taking into account the old idea by Newkirk and Bohlin (1965 ...
T. Pintér, M. Lorenc, M. Rybanský
openaire   +1 more source

Home - About - Disclaimer - Privacy