Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Multi-scale ionospheric irregularities occurrence over South America during the St. Patrick's day storm on March 17, 2015

Full text
Barbosa, F. R. E. [1, 2] ; Fagundes, P. R. [1] ; Venkatesh, K. [1] ; Fejer, B. G. [3] ; Pillat, V. G. [1] ; Denardini, C. M. [4] ; Muella, M. T. A. H. [1]
Total Authors: 7
[1] Univ Vale Paraiba UNIVAP, Lab Fis & Astron, Av Shishima Hifumi 2911, BR-12244000 Sao Jose Dos Campos, SP - Brazil
[2] Inst Fed Tocantins IFTO, Observ Fis Espacial, Campus Araguatins, Rua Castelo Branco, BR-77950000 Palmas, TO - Brazil
[3] Utah State Univ, Ctr Atmospher & Space Sci, Logan, UT 84322 - USA
[4] INPE, Av Astronautas 1758, BR-12227010 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Web of Science Citations: 0

During the solar cycle 24 there was a very intense geomagnetic storm due to the St. Patrick's day storm and the effects of this storm on ionosphere has become a topic of extensive space weather investigation. Up to now several aspects of the St. Patrick's ionospheric storm have been study such as the prompt penetration electric fields (PPEFs), TEC changes, electron density disturbances, plasma drift, O+ concentration modification, hemispherical asymmetry developments, equatorial ionization anomaly (EIA) modification, and ionospheric irregularities. Besides all these important studies, there are some essential aspects, which have not been addressed yet, related to the occurrence of multi-scale ionospheric irregularities. In this paper, we present and discuss the generation and suppression of multi-scale ionospheric irregularities, using the observations conducted in the Latin American Sector from 4 ionosondes, 20 dual frequency GPS stations, and JULIA radar observations during the month of March 2015, which includes the St. Patrick's day geomagnetic storm period. Suppression of large-small scales ionospheric irregularities has occurred during the main and second night of the recovery phases. However, during the first night of recovery phase there was post-midnight ionospheric irregularities. (AU)

FAPESP's process: 12/08445-9 - Study of day-to-day variability of the mesosphere, thermosphere and ionosphere at low latitude and equatorial region, during the solar cycle 24
Grantee:Paulo Roberto Fagundes
Support type: Research Projects - Thematic Grants