Results 21 to 30 of about 1,927 (242)

Synchronization of geomagnetic and ionospheric disturbances over Kazan station

Solar-Terrestrial Physics, 2017
The phenomena which accompany synchronization of night-time ionospheric and geomagnetic disturbances in an ULF range with periods 35–50 min near the mid-latitude station Kazan during a global magnetically quiet period have been analyzed.
Barkhatova O.M., Kosolapova N.V., Barkhatov N.A., Revunov S.E.   +3 more
doaj   +1 more source

Anomalous geomagnetic disturbances induced by catastrophic tsunamigenic earthquakes in the region of Indonesia

Геофизический журнал, 2012
Analysis of geomagnetic variations registered by the stations of the North-Caucasian geophysical observatory (the Elbrus volcanic area) has been fulfilled.
L. E. Sobisevich, A. L. Sobisevich, K. Kh. Kanonidi   +2 more
doaj   +1 more source

Geomagnetic disturbances analysis using discrete wavelets [PDF]

Geofísica 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, P. Fernandez de Campra, E. M. Zotto   +2 more
doaj   +2 more sources

Geomagnetic disturbances at F1-layer heights under different solar activity conditions over Norilsk

Solar-Terrestrial Physics, 2019
We analyze the influence of geomagnetic disturbances on the electron density Ne at Norilsk ionospheric station (69° N; 88° E) at F1-layer heights (120–200 km).
Kushnarenko G.P., Yakovleva O.E., Kuznetsova G.M.   +2 more
doaj   +1 more source

Analysis of geomagnetic disturbances dynamics during increased solar activity and magnetic storms (according to the measurements of INTERMAGNET station network) [PDF]

E3S Web of Conferences, 2019
We present and describe an automated method for analysis of magnetic data and for detection of geomagnetic disturbances based on wavelet transformation.
Mandrikova Oksana, Rodomanskay Anastasia, Zaitsev Alexander   +2 more
doaj   +1 more source

Mid‐Latitude Double H‐Spikes: Their Properties and Signatures in Different Geomagnetic Indices

Space Weather, 2023
Proper assessment of geomagnetic disturbances is a key aspect of space weather as technology is often impacted by space weather activity without previous warnings or proper forecasts.
E. Saiz, A. Guerrero, C. Cid
doaj   +1 more source

Geomagnetic disturbances and coronal rays [PDF]

Proceedings 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

ASSESSMENT OF THE SEVERE GEOMAGNETIC STORM ON MAY 10-11, 2024 EFFECTS ON THE GEOMAGNETIC FIELD AND IONOSPHERE OVER THE INDONESIAN REGION

Rudarsko-geološko-naftni Zbornik
The severe geomagnetic storm on May 11, 2024, is the largest space weather phenomenon in the 25th solar cycle. This paper presents the impact of that severe geomagnetic storm (Dst = -412 nT) on the geomagnetic field and ionosphere over Indonesia ...
Anwar Santoso, Sismanto Sismanto, Rhorom Priyatikanto, Eddy Hartantyo, Emanuel Sungging Mumpuni, La Ode Muhammad Musafar Kilowasid, Abdul Rachman, Fitri Nuraeni, Siska Filawati, Erlansyah Erlansyah, Dadang Nurmali   +10 more
doaj   +1 more source

Comparison between indices during geomagnetic disturbances [PDF]

Geofísica 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, Patricia Fernández de Campra   +1 more
doaj   +3 more sources

Solar corpuscles responsible for geomagnetic disturbances

Journal of Geophysical Research, 1954
A qualitative hypothesis is given that attributes recurrent “M-region” geomagnetic disturbances to the arrival at the earth of solar corpuscles that have been gathered into beams by the deflecting action of coronal-region fields, presumably magnetic, associated with centers of heightened solar activity.
Jean-Claude Pecker, Walter Orr Roberts
openaire   +2 more sources